Marshal.Copy Método

  • Referencia

Definición

Espacio de nombres:
System.Runtime.InteropServices
Ensamblado:
System.Runtime.InteropServices.dll
Ensamblado:
mscorlib.dll
Ensamblado:
netstandard.dll

Copia los datos de una matriz administrada a un puntero de memoria no administrada o de un puntero de memoria no administrada a una matriz administrada.

Sobrecargas

Copy(Single[], Int32, IntPtr, Int32)

Copia datos de una matriz unidimensional y administrada de números de punto flotante de precisión sencilla a un puntero de memoria no administrada.
Copy(IntPtr, Single[], Int32, Int32)

Copia datos de un puntero de memoria no administrada a una matriz administrada de números de punto flotante de precisión sencilla.
Copy(IntPtr, IntPtr[], Int32, Int32)

Copia datos de un puntero de memoria no administrada a una matriz IntPtr administrada.
Copy(IntPtr, Int64[], Int32, Int32)

Copia datos de un puntero de memoria no administrada a una matriz administrada de enteros de 64 bits con signo.
Copy(IntPtr, Int32[], Int32, Int32)

Copia datos de un puntero de memoria no administrada a una matriz administrada de enteros de 32 bits con signo.
Copy(IntPtr, Int16[], Int32, Int32)

Copia datos de un puntero de memoria no administrada a una matriz administrada de enteros de 16 bits con signo.
Copy(IntPtr, Double[], Int32, Int32)

Copia datos de un puntero de memoria no administrada a una matriz administrada de números de punto flotante de precisión doble.
Copy(IntPtr[], Int32, IntPtr, Int32)

Copia datos de una matriz IntPtr unidimensional y administrada a un puntero de memoria no administrada.
Copy(IntPtr, Byte[], Int32, Int32)

Copia datos de un puntero de memoria no administrada a una matriz administrada de enteros de 8 bits sin signo.
Copy(Int64[], Int32, IntPtr, Int32)

Copia datos de una matriz unidimensional administrada de enteros de 64 bits con signo a un puntero de memoria no administrada.
Copy(Int32[], Int32, IntPtr, Int32)

Copia datos de una matriz unidimensional administrada de enteros de 32 bits con signo a un puntero de memoria no administrada.
Copy(Int16[], Int32, IntPtr, Int32)

Copia datos de una matriz unidimensional administrada de enteros de 16 bits con signo a un puntero de memoria no administrada.
Copy(Double[], Int32, IntPtr, Int32)

Copia datos de una matriz unidimensional y administrada de números de punto flotante de precisión doble a un puntero de memoria no administrada.
Copy(Char[], Int32, IntPtr, Int32)

Copia datos de una matriz de caracteres unidimensional y administrada a un puntero de memoria no administrada.
Copy(IntPtr, Char[], Int32, Int32)

Copia datos de un puntero de memoria no administrada a una matriz de caracteres administrada.
Copy(Byte[], Int32, IntPtr, Int32)

Copia datos de una matriz unidimensional y administrada de enteros de 8 bits sin signo a un puntero de memoria no administrada.

Copy(Single[], Int32, IntPtr, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de una matriz unidimensional y administrada de números de punto flotante de precisión sencilla a un puntero de memoria no administrada.

public:
 static void Copy(cli::array <float> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (float[] source, int startIndex, IntPtr destination, int length);
public static void Copy (float[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : single[] * int * nativeint * int -> unit
static member Copy : single[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Single(), startIndex As Integer, destination As IntPtr, length As Integer)

Parámetros

source
Single[]

Matriz unidimensional de la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de origen donde debe comenzar la copia.

destination
IntPtr

nativeint

Puntero de memoria en el que se va a copiar.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentOutOfRangeException

startIndex y length no son válidos.

ArgumentNullException

source, startIndex, destination o length es null.

Comentarios

Puede usar este método para copiar un subconjunto de una matriz administrada unidimensional en una matriz de estilo C no administrada.

Se aplica a

Copy(IntPtr, Single[], Int32, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de un puntero de memoria no administrada a una matriz administrada de números de punto flotante de precisión sencilla.

public:
 static void Copy(IntPtr source, cli::array <float> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, float[] destination, int startIndex, int length);
public static void Copy (IntPtr source, float[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * single[] * int * int -> unit
static member Copy : nativeint * single[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Single(), startIndex As Integer, length As Integer)

Parámetros

source
IntPtr

nativeint

Puntero de memoria del que se va a copiar.

destination
Single[]

Matriz en la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de destino donde debe comenzar la copia.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentNullException

source, destination, startIndex o length es null.

Comentarios

Las matrices de estilo C no administradas no contienen información de límites, lo que impide que se validen los startIndex parámetros y length . Por lo tanto, los datos no administrados correspondientes al source parámetro rellenan la matriz administrada independientemente de su utilidad. Debe inicializar la matriz administrada con el tamaño adecuado antes de llamar a este método.

Consulte también

Se aplica a

Copy(IntPtr, IntPtr[], Int32, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de un puntero de memoria no administrada a una matriz IntPtr administrada.

public:
 static void Copy(IntPtr source, cli::array <IntPtr> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, IntPtr[] destination, int startIndex, int length);
public static void Copy (IntPtr source, IntPtr[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * nativeint[] * int * int -> unit
static member Copy : nativeint * nativeint[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As IntPtr(), startIndex As Integer, length As Integer)

Parámetros

source
IntPtr

nativeint

Puntero de memoria del que se va a copiar.

destination

IntPtr[]

nativeint[]

Matriz en la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de destino donde debe comenzar la copia.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentNullException

source, destination, startIndex o length es null.

Comentarios

Las matrices de estilo C no administradas no contienen información de límites, lo que impide que se validen los startIndex parámetros y length . Por lo tanto, los datos no administrados que corresponden al source parámetro rellenan la matriz administrada independientemente de su utilidad. Debe inicializar la matriz administrada con el tamaño adecuado antes de llamar al Marshal.Copy método .

Se aplica a

Copy(IntPtr, Int64[], Int32, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de un puntero de memoria no administrada a una matriz administrada de enteros de 64 bits con signo.

public:
 static void Copy(IntPtr source, cli::array <long> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, long[] destination, int startIndex, int length);
public static void Copy (IntPtr source, long[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * int64[] * int * int -> unit
static member Copy : nativeint * int64[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Long(), startIndex As Integer, length As Integer)

Parámetros

source
IntPtr

nativeint

Puntero de memoria del que se va a copiar.

destination
Int64[]

Matriz en la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de destino donde debe comenzar la copia.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentNullException

source, destination, startIndex o length es null.

Ejemplos

En el ejemplo siguiente se copia una matriz en memoria no administrada y, a continuación, se copia la matriz no administrada en la memoria administrada.

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        Int64[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            Int64[] managedArray2 = new Int64[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Int64() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Int64

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

Comentarios

Las matrices de estilo C no administradas no contienen información de límites, lo que impide que se validen los startIndex parámetros y length . Por lo tanto, los datos no administrados correspondientes alsource parámetro rellenan la matriz administrada independientemente de su utilidad. Debe inicializar la matriz administrada con el tamaño adecuado antes de llamar a este método.

Consulte también

Se aplica a

Copy(IntPtr, Int32[], Int32, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de un puntero de memoria no administrada a una matriz administrada de enteros de 32 bits con signo.

public:
 static void Copy(IntPtr source, cli::array <int> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, int[] destination, int startIndex, int length);
public static void Copy (IntPtr source, int[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * int[] * int * int -> unit
static member Copy : nativeint * int[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Integer(), startIndex As Integer, length As Integer)

Parámetros

source
IntPtr

nativeint

Puntero de memoria del que se va a copiar.

destination
Int32[]

Matriz en la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de destino donde debe comenzar la copia.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentNullException

source, destination, startIndex o length es null.

Ejemplos

En el ejemplo siguiente se copia una matriz en memoria no administrada y, a continuación, se copia la matriz no administrada en la memoria administrada.

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        int[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            int[] managedArray2 = new int[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Integer() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Integer

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

Comentarios

Las matrices de estilo C no administradas no contienen información de límites, lo que impide que se validen los startIndex parámetros y length . Por lo tanto, los datos no administrados correspondientes al source parámetro rellenan la matriz administrada independientemente de su utilidad. Debe inicializar la matriz administrada con el tamaño adecuado antes de llamar a este método.

Consulte también

Se aplica a

Copy(IntPtr, Int16[], Int32, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de un puntero de memoria no administrada a una matriz administrada de enteros de 16 bits con signo.

public:
 static void Copy(IntPtr source, cli::array <short> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, short[] destination, int startIndex, int length);
public static void Copy (IntPtr source, short[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * int16[] * int * int -> unit
static member Copy : nativeint * int16[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Short(), startIndex As Integer, length As Integer)

Parámetros

source
IntPtr

nativeint

Puntero de memoria del que se va a copiar.

destination
Int16[]

Matriz en la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de destino donde debe comenzar la copia.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentNullException

source, destination, startIndex o length es null.

Ejemplos

En el ejemplo siguiente se copia una matriz en memoria no administrada y, a continuación, se copia la matriz no administrada en la memoria administrada.

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        short[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            short[] managedArray2 = new short[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Short() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Short

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

Comentarios

Las matrices de estilo C no administradas no contienen información de límites, lo que impide que se validen los startIndex parámetros y length . Por lo tanto, los datos no administrados correspondientes al source parámetro rellenan la matriz administrada independientemente de su utilidad. Debe inicializar la matriz administrada con el tamaño adecuado antes de llamar a este método.

Consulte también

Se aplica a

Copy(IntPtr, Double[], Int32, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de un puntero de memoria no administrada a una matriz administrada de números de punto flotante de precisión doble.

public:
 static void Copy(IntPtr source, cli::array <double> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, double[] destination, int startIndex, int length);
public static void Copy (IntPtr source, double[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * double[] * int * int -> unit
static member Copy : nativeint * double[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Double(), startIndex As Integer, length As Integer)

Parámetros

source
IntPtr

nativeint

Puntero de memoria del que se va a copiar.

destination
Double[]

Matriz en la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de destino donde debe comenzar la copia.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentNullException

source, destination, startIndex o length es null.

Ejemplos

En el ejemplo siguiente se copia una matriz en memoria no administrada y, a continuación, se copia la matriz no administrada en la memoria administrada.

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        double[] managedArray = { 0.1, 0.2, 0.3, 0.4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            double[] managedArray2 = new double[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Double() = {0.1, 0.2, 0.3, 0.4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Double

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

Comentarios

Las matrices de estilo C no administradas no contienen información de límites, lo que impide que se validen los startIndex parámetros y length . Por lo tanto, los datos no administrados correspondientes al source parámetro rellenan la matriz administrada independientemente de su utilidad. Debe inicializar la matriz administrada con el tamaño adecuado antes de llamar a este método.

Consulte también

Se aplica a

Copy(IntPtr[], Int32, IntPtr, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de una matriz IntPtr unidimensional y administrada a un puntero de memoria no administrada.

public:
 static void Copy(cli::array <IntPtr> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr[] source, int startIndex, IntPtr destination, int length);
public static void Copy (IntPtr[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint[] * int * nativeint * int -> unit
static member Copy : nativeint[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As IntPtr(), startIndex As Integer, destination As IntPtr, length As Integer)

Parámetros

source

IntPtr[]

nativeint[]

Matriz unidimensional de la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de origen donde debe comenzar la copia.

destination
IntPtr

nativeint

Puntero de memoria en el que se va a copiar.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentNullException

source, destination, startIndex o length es null.

Comentarios

Puede usar este método para copiar un subconjunto de una matriz administrada IntPtr unidimensional en una matriz de estilo C no administrada.

Se aplica a

Copy(IntPtr, Byte[], Int32, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de un puntero de memoria no administrada a una matriz administrada de enteros de 8 bits sin signo.

public:
 static void Copy(IntPtr source, cli::array <System::Byte> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, byte[] destination, int startIndex, int length);
public static void Copy (IntPtr source, byte[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * byte[] * int * int -> unit
static member Copy : nativeint * byte[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Byte(), startIndex As Integer, length As Integer)

Parámetros

source
IntPtr

nativeint

Puntero de memoria del que se va a copiar.

destination
Byte[]

Matriz en la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de destino donde debe comenzar la copia.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentNullException

source, destination, startIndex o length es null.

Ejemplos

En el ejemplo siguiente se copia una matriz en memoria no administrada y, a continuación, se copia la matriz no administrada en la memoria administrada.

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        byte[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            byte[] managedArray2 = new byte[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Byte() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Byte

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

Comentarios

Las matrices de estilo C no administradas no contienen información de límites, lo que impide que se validen los startIndex parámetros y length . Por lo tanto, los datos no administrados correspondientes al source parámetro rellenan la matriz administrada independientemente de su utilidad. Debe inicializar la matriz administrada con el tamaño adecuado antes de llamar a este método.

Consulte también

Se aplica a

Copy(Int64[], Int32, IntPtr, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de una matriz unidimensional administrada de enteros de 64 bits con signo a un puntero de memoria no administrada.

public:
 static void Copy(cli::array <long> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (long[] source, int startIndex, IntPtr destination, int length);
public static void Copy (long[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : int64[] * int * nativeint * int -> unit
static member Copy : int64[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Long(), startIndex As Integer, destination As IntPtr, length As Integer)

Parámetros

source
Int64[]

Matriz unidimensional de la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de origen donde debe comenzar la copia.

destination
IntPtr

nativeint

Puntero de memoria en el que se va a copiar.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentOutOfRangeException

startIndex y length no son válidos.

ArgumentNullException

source, startIndex, destination o length es null.

Ejemplos

En el ejemplo siguiente se copia una matriz en memoria no administrada y, a continuación, se copia la matriz no administrada en la memoria administrada.

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        Int64[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            Int64[] managedArray2 = new Int64[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Int64() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Int64

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

Comentarios

Puede usar este método para copiar un subconjunto de una matriz administrada unidimensional en una matriz de estilo C no administrada.

Se aplica a

Copy(Int32[], Int32, IntPtr, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de una matriz unidimensional administrada de enteros de 32 bits con signo a un puntero de memoria no administrada.

public:
 static void Copy(cli::array <int> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (int[] source, int startIndex, IntPtr destination, int length);
public static void Copy (int[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : int[] * int * nativeint * int -> unit
static member Copy : int[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Integer(), startIndex As Integer, destination As IntPtr, length As Integer)

Parámetros

source
Int32[]

Matriz unidimensional de la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de origen donde debe comenzar la copia.

destination
IntPtr

nativeint

Puntero de memoria en el que se va a copiar.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentOutOfRangeException

startIndex y length no son válidos.

ArgumentNullException

startIndex o length es null.

Ejemplos

En el ejemplo siguiente se copia una matriz en memoria no administrada y, a continuación, se copia la matriz no administrada en la memoria administrada.

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        int[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            int[] managedArray2 = new int[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Integer() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Integer

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

Comentarios

Puede usar este método para copiar un subconjunto de una matriz administrada unidimensional en una matriz de estilo C no administrada.

Se aplica a

Copy(Int16[], Int32, IntPtr, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de una matriz unidimensional administrada de enteros de 16 bits con signo a un puntero de memoria no administrada.

public:
 static void Copy(cli::array <short> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (short[] source, int startIndex, IntPtr destination, int length);
public static void Copy (short[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : int16[] * int * nativeint * int -> unit
static member Copy : int16[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Short(), startIndex As Integer, destination As IntPtr, length As Integer)

Parámetros

source
Int16[]

Matriz unidimensional de la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de origen donde debe comenzar la copia.

destination
IntPtr

nativeint

Puntero de memoria en el que se va a copiar.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentOutOfRangeException

startIndex y length no son válidos.

ArgumentNullException

source, startIndex, destination o length es null.

Ejemplos

En el ejemplo siguiente se copia una matriz en memoria no administrada y, a continuación, se copia la matriz no administrada en la memoria administrada.

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        short[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            short[] managedArray2 = new short[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Short() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Short

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

Comentarios

Puede usar este método para copiar un subconjunto de una matriz administrada unidimensional en una matriz de estilo C no administrada.

Se aplica a

Copy(Double[], Int32, IntPtr, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de una matriz unidimensional y administrada de números de punto flotante de precisión doble a un puntero de memoria no administrada.

public:
 static void Copy(cli::array <double> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (double[] source, int startIndex, IntPtr destination, int length);
public static void Copy (double[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : double[] * int * nativeint * int -> unit
static member Copy : double[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Double(), startIndex As Integer, destination As IntPtr, length As Integer)

Parámetros

source
Double[]

Matriz unidimensional de la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de origen donde debe comenzar la copia.

destination
IntPtr

nativeint

Puntero de memoria en el que se va a copiar.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentOutOfRangeException

startIndex y length no son válidos.

ArgumentNullException

source, startIndex, destination o length es null.

Ejemplos

En el ejemplo siguiente se copia una matriz en memoria no administrada y, a continuación, se copia la matriz no administrada en la memoria administrada.

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        double[] managedArray = { 0.1, 0.2, 0.3, 0.4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            double[] managedArray2 = new double[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Double() = {0.1, 0.2, 0.3, 0.4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Double

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

Comentarios

Puede usar este método para copiar un subconjunto de una matriz administrada unidimensional en una matriz de estilo C no administrada.

Se aplica a

Copy(Char[], Int32, IntPtr, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de una matriz de caracteres unidimensional y administrada a un puntero de memoria no administrada.

public:
 static void Copy(cli::array <char> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (char[] source, int startIndex, IntPtr destination, int length);
public static void Copy (char[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : char[] * int * nativeint * int -> unit
static member Copy : char[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Char(), startIndex As Integer, destination As IntPtr, length As Integer)

Parámetros

source
Char[]

Matriz unidimensional de la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de origen donde debe comenzar la copia.

destination
IntPtr

nativeint

Puntero de memoria en el que se va a copiar.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentOutOfRangeException

startIndex y length no son válidos.

ArgumentNullException

startIndex, destination o length es null.

Ejemplos

En el ejemplo siguiente se copia una matriz en memoria no administrada y, a continuación, se copia la matriz no administrada en la memoria administrada.

// Remember that the actual size of System.Char in unmanaged memory is 2.
using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        char[] managedArray = new char[1000];
        managedArray[0] = 'a';
        managedArray[1] = 'b';
        managedArray[2] = 'c';
        managedArray[3] = 'd';
        managedArray[999] = 'Z';

        // Initialize unmanaged memory to hold the array.
        // int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;  // Incorrect
        int size = Marshal.SystemDefaultCharSize * managedArray.Length;       // Correct

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            char[] managedArray2 = new char[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);
            Console.WriteLine("Here is the roundtripped array: {0} {1} {2} {3} {4}",
                               managedArray2[0], managedArray2[1], managedArray2[2], managedArray2[3],
                               managedArray2[999]);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

' Remember that the actual size of System.Char in unmanaged memory is 2.

Imports System.Runtime.InteropServices



Module Module1

    Sub Main()
        ' Create a managed array.
        Dim managedArray As Char() = New Char(999) {}
        managedArray(0) = "a"c
        managedArray(1) = "b"c
        managedArray(2) = "c"c
        managedArray(3) = "d"c
        managedArray(999) = "Z"c

        ' Initialize unmanaged memory to hold the array.
        ' Dim size As Integer = Marshal.SizeOf(managedArray[0]) * managedArray.Length;  ' Incorrect
        Dim size As Integer = Marshal.SystemDefaultCharSize * managedArray.Length       ' Correct

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.

            Dim managedArray2 As Char() = New Char(managedArray.Length - 1) {}

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)
            Console.WriteLine("Here is the roundtripped array: {0} {1} {2} {3} {4}", managedArray2(0), managedArray2(1), managedArray2(2), managedArray2(3), managedArray2(999))


            Console.WriteLine("The array was copied to unmanaged memory and back.")
        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)

        End Try
    End Sub
End Module

Comentarios

Puede usar este método para copiar un subconjunto de una matriz administrada unidimensional en una matriz de estilo C no administrada.

Se aplica a

Copy(IntPtr, Char[], Int32, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de un puntero de memoria no administrada a una matriz de caracteres administrada.

public:
 static void Copy(IntPtr source, cli::array <char> ^ destination, int startIndex, int length);
[System.Security.SecurityCritical]
public static void Copy (IntPtr source, char[] destination, int startIndex, int length);
public static void Copy (IntPtr source, char[] destination, int startIndex, int length);
[<System.Security.SecurityCritical>]
static member Copy : nativeint * char[] * int * int -> unit
static member Copy : nativeint * char[] * int * int -> unit
Public Shared Sub Copy (source As IntPtr, destination As Char(), startIndex As Integer, length As Integer)

Parámetros

source
IntPtr

nativeint

Puntero de memoria del que se va a copiar.

destination
Char[]

Matriz en la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de destino donde debe comenzar la copia.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentNullException

source, destination, startIndex o length es null.

Ejemplos

En el ejemplo siguiente se copia una matriz en memoria no administrada y, a continuación, se copia la matriz no administrada en la memoria administrada.

// Remember that the actual size of System.Char in unmanaged memory is 2.
using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        char[] managedArray = new char[1000];
        managedArray[0] = 'a';
        managedArray[1] = 'b';
        managedArray[2] = 'c';
        managedArray[3] = 'd';
        managedArray[999] = 'Z';

        // Initialize unmanaged memory to hold the array.
        // int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;  // Incorrect
        int size = Marshal.SystemDefaultCharSize * managedArray.Length;       // Correct

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            char[] managedArray2 = new char[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);
            Console.WriteLine("Here is the roundtripped array: {0} {1} {2} {3} {4}",
                               managedArray2[0], managedArray2[1], managedArray2[2], managedArray2[3],
                               managedArray2[999]);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

' Remember that the actual size of System.Char in unmanaged memory is 2.

Imports System.Runtime.InteropServices



Module Module1

    Sub Main()
        ' Create a managed array.
        Dim managedArray As Char() = New Char(999) {}
        managedArray(0) = "a"c
        managedArray(1) = "b"c
        managedArray(2) = "c"c
        managedArray(3) = "d"c
        managedArray(999) = "Z"c

        ' Initialize unmanaged memory to hold the array.
        ' Dim size As Integer = Marshal.SizeOf(managedArray[0]) * managedArray.Length;  ' Incorrect
        Dim size As Integer = Marshal.SystemDefaultCharSize * managedArray.Length       ' Correct

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.

            Dim managedArray2 As Char() = New Char(managedArray.Length - 1) {}

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)
            Console.WriteLine("Here is the roundtripped array: {0} {1} {2} {3} {4}", managedArray2(0), managedArray2(1), managedArray2(2), managedArray2(3), managedArray2(999))


            Console.WriteLine("The array was copied to unmanaged memory and back.")
        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)

        End Try
    End Sub
End Module

Comentarios

Las matrices de estilo C no administradas no contienen información de límites, lo que impide que se validen los startIndex parámetros y length . Por lo tanto, los datos no administrados correspondientes al source parámetro rellenan la matriz administrada independientemente de su utilidad. Debe inicializar la matriz administrada con el tamaño adecuado antes de llamar a este método.

Consulte también

Se aplica a

Copy(Byte[], Int32, IntPtr, Int32)

Source:
Marshal.cs
Source:
Marshal.cs
Source:
Marshal.cs

Copia datos de una matriz unidimensional y administrada de enteros de 8 bits sin signo a un puntero de memoria no administrada.

public:
 static void Copy(cli::array <System::Byte> ^ source, int startIndex, IntPtr destination, int length);
[System.Security.SecurityCritical]
public static void Copy (byte[] source, int startIndex, IntPtr destination, int length);
public static void Copy (byte[] source, int startIndex, IntPtr destination, int length);
[<System.Security.SecurityCritical>]
static member Copy : byte[] * int * nativeint * int -> unit
static member Copy : byte[] * int * nativeint * int -> unit
Public Shared Sub Copy (source As Byte(), startIndex As Integer, destination As IntPtr, length As Integer)

Parámetros

source
Byte[]

Matriz unidimensional de la que se va a copiar.

startIndex
Int32

Índice de base cero de la matriz de origen donde debe comenzar la copia.

destination
IntPtr

nativeint

Puntero de memoria en el que se va a copiar.

length
Int32

Número de elementos de la matriz que se van a copiar.

Atributos
SecurityCriticalAttribute

Excepciones

ArgumentOutOfRangeException

startIndex y length no son válidos.

ArgumentNullException

source, startIndex, destination o length es null.

Ejemplos

En el ejemplo siguiente se copia una matriz en memoria no administrada mediante la Copy(Byte[], Int32, IntPtr, Int32) sobrecarga y, a continuación, se copia la matriz no administrada en la memoria administrada mediante la Copy(IntPtr, Byte[], Int32, Int32) sobrecarga .

using System;
using System.Runtime.InteropServices;

class Example
{

    static void Main()
    {
        // Create a managed array.
        byte[] managedArray = { 1, 2, 3, 4 };

        // Initialize unmanaged memory to hold the array.
        int size = Marshal.SizeOf(managedArray[0]) * managedArray.Length;

        IntPtr pnt = Marshal.AllocHGlobal(size);

        try
        {
            // Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length);

            // Copy the unmanaged array back to another managed array.

            byte[] managedArray2 = new byte[managedArray.Length];

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length);

            Console.WriteLine("The array was copied to unmanaged memory and back.");
        }
        finally
        {
            // Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt);
        }
    }
}

Imports System.Runtime.InteropServices



Module Example


    Sub Main()
        ' Create a managed array.
        Dim managedArray As Byte() = {1, 2, 3, 4}

        ' Initialize unmanaged memory to hold the array.
        Dim size As Integer = Marshal.SizeOf(managedArray(0)) * managedArray.Length

        Dim pnt As IntPtr = Marshal.AllocHGlobal(size)

        Try
            ' Copy the array to unmanaged memory.
            Marshal.Copy(managedArray, 0, pnt, managedArray.Length)

            ' Copy the unmanaged array back to another managed array.
            Dim managedArray2(managedArray.Length) As Byte

            Marshal.Copy(pnt, managedArray2, 0, managedArray.Length)

            Console.WriteLine("The array was copied to unmanaged memory and back.")

        Finally
            ' Free the unmanaged memory.
            Marshal.FreeHGlobal(pnt)
        End Try

    End Sub
End Module

Comentarios

Puede usar este método para copiar un subconjunto de una matriz administrada unidimensional en una matriz de estilo C no administrada.

Se aplica a