BitConverter.ToInt32 Método

Source:

BitConverter.cs

Source:

BitConverter.cs

Source:

BitConverter.cs

public:
 static int ToInt32(ReadOnlySpan<System::Byte> value);

public static int ToInt32 (ReadOnlySpan<byte> value);

static member ToInt32 : ReadOnlySpan<byte> -> int

Public Shared Function ToInt32 (value As ReadOnlySpan(Of Byte)) As Integer

Parámetros

Devoluciones

Entero de 32 bits con signo que representa los bytes convertidos.

Excepciones

Source:

BitConverter.cs

Source:

BitConverter.cs

Source:

BitConverter.cs

public:
 static int ToInt32(cli::array <System::Byte> ^ value, int startIndex);

public static int ToInt32 (byte[] value, int startIndex);

static member ToInt32 : byte[] * int -> int

Public Shared Function ToInt32 (value As Byte(), startIndex As Integer) As Integer

Parámetros

Devoluciones

Entero de 32 bits con signo formado por cuatro bytes que comienzan en startIndex.

Excepciones

Ejemplos

En el ejemplo siguiente se usa el ToInt32 método para crear Int32 valores a partir de una matriz de cuatro bytes y de los cuatro bytes superiores de una matriz de ocho bytes. También usa los GetBytes(Int32) métodos y para realizar un recorrido de ida y ToInt32 vuelta un Int32 valor.

using System;

public class Example
{
   public static void Main()
   {
      // Create an Integer from a 4-byte array.
      Byte[] bytes1 = { 0xEC, 0x00, 0x00, 0x00 };
      Console.WriteLine("{0}--> 0x{1:X4} ({1:N0})", FormatBytes(bytes1),
                                      BitConverter.ToInt32(bytes1, 0));
      // Create an Integer from the upper four bytes of a byte array.
      Byte[] bytes2 = BitConverter.GetBytes(Int64.MaxValue / 2);
      Console.WriteLine("{0}--> 0x{1:X4} ({1:N0})", FormatBytes(bytes2),
                                      BitConverter.ToInt32(bytes2, 4));

      // Round-trip an integer value.
      int original = (int) Math.Pow(16, 3);
      Byte[] bytes3 = BitConverter.GetBytes(original);
      int restored = BitConverter.ToInt32(bytes3, 0);
      Console.WriteLine("0x{0:X4} ({0:N0}) --> {1} --> 0x{2:X4} ({2:N0})", original,
                        FormatBytes(bytes3), restored);
   }

   private static string FormatBytes(Byte[] bytes)
   {
       string value = "";
       foreach (var byt in bytes)
          value += string.Format("{0:X2} ", byt);

       return value;
   }
}
// The example displays the following output:
//       EC 00 00 00 --> 0x00EC (236)
//       FF FF FF FF FF FF FF 3F --> 0x3FFFFFFF (1,073,741,823)
//       0x1000 (4,096) --> 00 10 00 00  --> 0x1000 (4,096)

open System

let formatBytes (bytes: byte []) =
    bytes
    |> Array.map (fun x -> $"{x:X2}")
    |> String.concat ""

// Create an Integer from a 4-byte array.
let bytes1 = [| 0xECuy; 0x00uy; 0x00uy; 0x00uy |]
let int1  = BitConverter.ToInt32(bytes1, 0)
printfn $"{formatBytes bytes1}--> 0x{int1:X4} ({int1:N0})"

// Create an Integer from the upper four bytes of a byte array.
let bytes2 = BitConverter.GetBytes(Int64.MaxValue / 2L)
let int2 = BitConverter.ToInt32(bytes2, 4)
printfn $"{formatBytes bytes2}--> 0x{int2:X4} ({int2:N0})"

// Round-trip an integer value.
let original = pown 16 3
let bytes3 = BitConverter.GetBytes original
let restored = BitConverter.ToInt32(bytes3, 0)
printfn $"0x{original:X4} ({original:N0}) --> {formatBytes bytes3} --> 0x{restored:X4} ({restored:N0})"


// The example displays the following output:
//       EC 00 00 00 --> 0x00EC (236)
//       FF FF FF FF FF FF FF 3F --> 0x3FFFFFFF (1,073,741,823)
//       0x1000 (4,096) --> 00 10 00 00  --> 0x1000 (4,096)

Module Example
   Public Sub Main()
      ' Create an Integer from a 4-byte array.
      Dim bytes1() As Byte = { &hEC, &h00, &h00, &h00 }
      Console.WriteLine("{0}--> 0x{1:X4} ({1:N0})", FormatBytes(bytes1),
                                      BitConverter.ToInt32(bytes1, 0))
      ' Create an Integer from the upper four bytes of a byte array.
      Dim bytes2() As Byte = BitConverter.GetBytes(Int64.MaxValue \ 2)
      Console.WriteLine("{0}--> 0x{1:X4} ({1:N0})", FormatBytes(bytes2),
                                      BitConverter.ToInt32(bytes2, 4))
      
      ' Round-trip an integer value.
      Dim original As Integer = CInt(16^3)
      Dim bytes3() As Byte = BitConverter.GetBytes(original)
      Dim restored As Integer = BitConverter.ToInt32(bytes3, 0)
      Console.WriteLine("0x{0:X4} ({0:N0}) --> {1} --> 0x{2:X4} ({2:N0})", original, 
                        FormatBytes(bytes3), restored)
   End Sub
   
   Private Function FormatBytes(bytes() As Byte) As String
       Dim value As String = ""
       For Each byt In bytes
          value += String.Format("{0:X2} ", byt)
       Next
       Return value
   End Function
End Module
' The example displays the following output:
'       EC 00 00 00 --> 0x00EC (236)
'       FF FF FF FF FF FF FF 3F --> 0x3FFFFFFF (1,073,741,823)
'       0x1000 (4,096) --> 00 10 00 00  --> 0x1000 (4,096)

Comentarios

El ToInt32 método convierte los bytes del índice startIndex a startIndex + 3 en un Int32 valor. El orden de bytes de la matriz debe reflejar la endianidad de la arquitectura del sistema informático. Para obtener más información, consulte la sección Comentarios de BitConverter.

Consulte también

• GetBytes(Int32)