Type.GetProperty Méthode

Source:

Type.cs

Source:

Type.cs

Source:

Type.cs

public:
 virtual System::Reflection::PropertyInfo ^ GetProperty(System::String ^ name, System::Reflection::BindingFlags bindingAttr, System::Reflection::Binder ^ binder, Type ^ returnType, cli::array <Type ^> ^ types, cli::array <System::Reflection::ParameterModifier> ^ modifiers);

public System.Reflection.PropertyInfo? GetProperty (string name, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder? binder, Type? returnType, Type[] types, System.Reflection.ParameterModifier[]? modifiers);

public System.Reflection.PropertyInfo GetProperty (string name, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder binder, Type returnType, Type[] types, System.Reflection.ParameterModifier[] modifiers);

abstract member GetProperty : string * System.Reflection.BindingFlags * System.Reflection.Binder * Type * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.PropertyInfo
override this.GetProperty : string * System.Reflection.BindingFlags * System.Reflection.Binder * Type * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.PropertyInfo

Public Function GetProperty (name As String, bindingAttr As BindingFlags, binder As Binder, returnType As Type, types As Type(), modifiers As ParameterModifier()) As PropertyInfo

Paramètres

Retours

Objet représentant la propriété qui correspond aux critères spécifiés, si elle est trouvée ; sinon, null.

Implémente

Exceptions

Remarques

Pour plus d’informations sur cette API, consultez Remarques supplémentaires sur l’API pour Type.GetProperty.

Voir aussi

• PropertyInfo
• String
• BindingFlags
• Binder
• DefaultBinder
• ParameterModifier
• GetPropertyImpl(String, BindingFlags, Binder, Type, Type[], ParameterModifier[])
• GetProperties(BindingFlags)

Source:

Type.cs

Source:

Type.cs

Source:

Type.cs

public:
 System::Reflection::PropertyInfo ^ GetProperty(System::String ^ name, Type ^ returnType, cli::array <Type ^> ^ types, cli::array <System::Reflection::ParameterModifier> ^ modifiers);

public:
 virtual System::Reflection::PropertyInfo ^ GetProperty(System::String ^ name, Type ^ returnType, cli::array <Type ^> ^ types, cli::array <System::Reflection::ParameterModifier> ^ modifiers);

public System.Reflection.PropertyInfo? GetProperty (string name, Type? returnType, Type[] types, System.Reflection.ParameterModifier[]? modifiers);

public System.Reflection.PropertyInfo GetProperty (string name, Type returnType, Type[] types, System.Reflection.ParameterModifier[] modifiers);

member this.GetProperty : string * Type * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.PropertyInfo

abstract member GetProperty : string * Type * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.PropertyInfo
override this.GetProperty : string * Type * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.PropertyInfo

Public Function GetProperty (name As String, returnType As Type, types As Type(), modifiers As ParameterModifier()) As PropertyInfo

Paramètres

Retours

Objet qui représente la propriété publique correspondant aux exigences spécifiées, si elle est trouvée ; sinon, null.

Implémente

Exceptions

Exemples

L’exemple suivant obtient un Type objet correspondant à MyPropertyClass, et la propriété indexée de cette classe est récupérée à l’aide des arguments passés à la GetProperty méthode .

using namespace System;
using namespace System::Reflection;
public ref class MyPropertyClass
{
private:
   array<int, 2>^ myPropertyArray;

public:

   property int Item [int, int]
   {
      // Declare an indexer.
      int get( int i, int j )
      {
         return myPropertyArray[ i,j ];
      }

      void set( int i, int j, int value )
      {
         myPropertyArray[ i,j ] = value;
      }

   }

};

int main()
{
   try
   {
      Type^ myType = MyPropertyClass::typeid;
      array<Type^>^myTypeArray = gcnew array<Type^>(2);
      
      // Create an instance of the Type array representing the number, order
      // and type of the parameters for the property.
      myTypeArray->SetValue( int::typeid, 0 );
      myTypeArray->SetValue( int::typeid, 1 );
      
      // Search for the indexed property whose parameters match the
      // specified argument types and modifiers.
      PropertyInfo^ myPropertyInfo = myType->GetProperty( "Item", int::typeid, myTypeArray, nullptr );
      Console::WriteLine( "{0}.{1} has a property type of {2}", myType->FullName, myPropertyInfo->Name, myPropertyInfo->PropertyType );
   }
   catch ( Exception^ ex ) 
   {
      Console::WriteLine( "An exception occurred {0}", ex->Message );
   }

}

using System;
using System.Reflection;

public class MyPropertyClass
{
    private readonly int [,] _myPropertyArray = new int[10,10];
    // Declare an indexer.
    public int this [int i,int j]
    {
        get
        {
            return _myPropertyArray[i,j];
        }
        set
        {
            _myPropertyArray[i,j] = value;
        }
    }
}

public class MyTypeClass
{
    public static void Main()
    {
        try
        {
            Type myType=typeof(MyPropertyClass);
            Type[] myTypeArray = new Type[2];

            // Create an instance of the Type array representing the number, order
            // and type of the parameters for the property.
            myTypeArray.SetValue(typeof(int),0);
            myTypeArray.SetValue(typeof(int),1);

            // Search for the indexed property whose parameters match the
            // specified argument types and modifiers.
            PropertyInfo myPropertyInfo = myType.GetProperty("Item",
                typeof(int),myTypeArray,null);
            Console.WriteLine(myType.FullName + "." + myPropertyInfo.Name +
                " has a property type of " + myPropertyInfo.PropertyType);
         }
        catch(Exception ex)
        {
            Console.WriteLine("An exception occurred " + ex.Message);
        }
    }
}

open System

type MyPropertyClass() =
    let myPropertyArray = Array2D.zeroCreate<int> 10 10
    // Declare an indexed property.
    member _.Item
        with get (i, j) =
            myPropertyArray[i, j]
        and set (i, j) value =
            myPropertyArray[i, j] <- value

try
    let myType = typeof<MyPropertyClass>
    let myTypeArray = Array.zeroCreate<Type> 2
    // Create an instance of the Type array representing the number, order
    // and type of the parameters for the property.
    myTypeArray.SetValue(typeof<int>, 0)
    myTypeArray.SetValue(typeof<int>, 1)
    // Search for the indexed property whose parameters match the
    // specified argument types and modifiers.
    let myPropertyInfo = myType.GetProperty("Item", typeof<int>, myTypeArray, null)
    printfn $"{myType.FullName}.{myPropertyInfo.Name} has a property type of {myPropertyInfo.PropertyType}"
with ex ->
    printfn $"An exception occurred {ex.Message}"

Imports System.Reflection

Public Class MyPropertyClass
    Private myPropertyArray(9, 9) As Integer
    ' Declare an indexer.
    Default Public Property Item(ByVal i As Integer, ByVal j As Integer) As Integer
        Get
            Return myPropertyArray(i, j)
        End Get
        Set(ByVal Value As Integer)
            myPropertyArray(i, j) = Value
        End Set
    End Property
End Class

Public Class MyTypeClass
    Public Shared Sub Main()
        Try
            Dim myType As Type = GetType(MyPropertyClass)
            Dim myTypeArray(1) As Type
            ' Create an instance of a Type array representing the number, order 
            ' and type of the parameters for the property.
            myTypeArray.SetValue(GetType(Integer), 0)
            myTypeArray.SetValue(GetType(Integer), 1)
            ' Search for the indexed property whose parameters match the
            ' specified argument types and modifiers.
            Dim myPropertyInfo As PropertyInfo = myType.GetProperty("Item", _
                  GetType(Integer), myTypeArray, Nothing)
            Console.WriteLine(myType.FullName + "." + myPropertyInfo.Name + _
                  " has a property  type of " + myPropertyInfo.PropertyType.ToString())
        Catch ex As Exception
            Console.WriteLine("An exception occurred " + ex.Message.ToString())
        End Try
    End Sub
End Class

Remarques

Une propriété est considérée comme publique à réfléchir si elle a au moins un accesseur public. Sinon, la propriété est considérée comme privée et vous devez utiliser BindingFlags.NonPublic | | BindingFlags.InstanceBindingFlags.Static (en Visual Basic, combiner les valeurs à l’aide de Or) pour l’obtenir.

Bien que le classeur par défaut ne traite ParameterModifier pas (le modifiers paramètre), vous pouvez utiliser la classe abstraite System.Reflection.Binder pour écrire un classeur personnalisé qui traite modifiers. ParameterModifier est utilisé uniquement lors de l’appel via l’interopérabilité COM, et seuls les paramètres passés par référence sont gérés.

La recherche respecte name la casse. La recherche inclut des propriétés statiques et publiques instance.

Si le courant Type représente un type générique construit, cette méthode retourne le PropertyInfo avec les paramètres de type remplacés par les arguments de type appropriés.

Si le current Type représente un paramètre de type dans la définition d’un type générique ou d’une méthode générique, cette méthode recherche les propriétés de la contrainte de classe.

Voir aussi

• PropertyInfo
• String
• DefaultBinder
• ParameterModifier
• GetPropertyImpl(String, BindingFlags, Binder, Type, Type[], ParameterModifier[])
• GetProperties(BindingFlags)

Source:

Type.cs

Source:

Type.cs

Source:

Type.cs

public:
 System::Reflection::PropertyInfo ^ GetProperty(System::String ^ name, cli::array <Type ^> ^ types);

public:
 virtual System::Reflection::PropertyInfo ^ GetProperty(System::String ^ name, cli::array <Type ^> ^ types);

public System.Reflection.PropertyInfo? GetProperty (string name, Type[] types);

public System.Reflection.PropertyInfo GetProperty (string name, Type[] types);

member this.GetProperty : string * Type[] -> System.Reflection.PropertyInfo

abstract member GetProperty : string * Type[] -> System.Reflection.PropertyInfo
override this.GetProperty : string * Type[] -> System.Reflection.PropertyInfo

Public Function GetProperty (name As String, types As Type()) As PropertyInfo

Paramètres

Retours

Objet représentant la propriété publique dont les paramètres correspondent aux types d'arguments spécifiés, si elle est trouvée ; sinon, null.

Implémente

Exceptions

Exemples

L’exemple suivant récupère l’objet Type d’une classe définie par l’utilisateur, récupère la propriété de cette classe et affiche le nom de propriété et le type de la propriété comme spécifié par les arguments passés à GetProperty.

using namespace System;
using namespace System::Reflection;
ref class MyClass1
{
private:
   array<int, 2>^myArray;

public:

   property int Item [int, int]
   {

      // Declare an indexer.
      int get( int i, int j )
      {
         return myArray[ i,j ];
      }

      void set( int i, int j, int value )
      {
         myArray[ i,j ] = value;
      }

   }

};

int main()
{
   try
   {
      
      // Get the Type object.
      Type^ myType = MyClass1::typeid;
      array<Type^>^myTypeArr = gcnew array<Type^>(2);
      
      // Create an instance of a Type array.
      myTypeArr->SetValue( int::typeid, 0 );
      myTypeArr->SetValue( int::typeid, 1 );
      
      // Get the PropertyInfo object for the indexed property Item, which has two integer parameters.
      PropertyInfo^ myPropInfo = myType->GetProperty( "Item", myTypeArr );
      
      // Display the property.
      Console::WriteLine( "The {0} property exists in MyClass1.", myPropInfo );
   }
   catch ( NullReferenceException^ e ) 
   {
      Console::WriteLine( "An exception occurred." );
      Console::WriteLine( "Source : {0}", e->Source );
      Console::WriteLine( "Message : {0}", e->Message );
   }

}

using System;
using System.Reflection;

class MyClass3
{
    private readonly int[,] _myArray = { { 1, 2 }, { 3, 4 } };
    // Declare an indexer.
    public int this[int i, int j]
    {
        get
        {
            return _myArray[i, j];
        }
        set
        {
            _myArray[i, j] = value;
        }
    }
}

public class MyTypeClass3
{
    public static void Main(string[] args)
    {
        try
        {
            // Get the Type object.
            Type myType = typeof(MyClass3);
            Type[] myTypeArr = new Type[2];

            // Create an instance of a Type array.
            myTypeArr.SetValue(typeof(int), 0);
            myTypeArr.SetValue(typeof(int), 1);

            // Get the PropertyInfo object for the indexed property Item, which has two integer parameters.
            PropertyInfo myPropInfo = myType.GetProperty("Item", myTypeArr);

            // Display the property.
            Console.WriteLine("The {0} property exists in MyClass3.",
                myPropInfo.ToString());
        }
        catch (NullReferenceException e)
        {
            Console.WriteLine("An exception occurred.");
            Console.WriteLine("Source : {0}", e.Source);
            Console.WriteLine("Message : {0}", e.Message);
        }
    }
}

open System

type MyClass1() =
    let myArray = array2D [[1; 2]; [3; 4]]
    // Declare an indexed property.
    member _.Item
        with get (i, j) =
            myArray[i, j]
        and set (i, j) value =
            myArray[i, j] <- value
try
    // Get the Type object.
    let myType = typeof<MyClass1>
    let myTypeArr = Array.zeroCreate<Type> 2
    // Create an instance of a Type array.
    myTypeArr.SetValue(typeof<int>, 0)
    myTypeArr.SetValue(typeof<int>, 1)
    // Get the PropertyInfo object for the indexed property Item, which has two integer parameters.
    let myPropInfo = myType.GetProperty("Item", myTypeArr)
    // Display the property.
    printfn $"The {myPropInfo} property exists in MyClass1."
with :? NullReferenceException as e ->
    printfn "An exception occurred."
    printfn $"Source : {e.Source}" 
    printfn $"Message : {e.Message}"

Imports System.Reflection

Module Module1
    Class MyClass1
        Private myArray As Integer(,) = {{1, 2}, {3, 4}}
        ' Declare an indexer.
        Default Public Property Item(ByVal i As Integer, ByVal j As Integer) As Integer
            Get
                Return myArray(i, j)
            End Get
            Set(ByVal Value As Integer)

                myArray(i, j) = Value
            End Set
        End Property
    End Class

    Public Class MyTypeClass
        Public Shared Sub Main()
            Try
                ' Get the Type Object.
                Dim myType As Type = GetType(MyClass1)
                Dim myTypeArr(1) As Type
                ' Create an instance of a Type array.
                myTypeArr.SetValue(GetType(Integer), 0)
                myTypeArr.SetValue(GetType(Integer), 1)
                ' Get the PropertyInfo object for the indexed property Item, which has two integer parameters. 
                Dim myPropInfo As PropertyInfo = myType.GetProperty("Item", myTypeArr)
                ' Display the property.
                Console.WriteLine("The {0} property exists in MyClass1.", myPropInfo.ToString())
            Catch e As NullReferenceException
                Console.WriteLine("An exception occurred.")
                Console.WriteLine("Source : {0}", e.Source.ToString())
                Console.WriteLine("Message : {0}", e.Message.ToString())
            End Try
        End Sub
    End Class
End Module 'Module1

Remarques

Une propriété est considérée comme publique à réfléchir si elle a au moins un accesseur public. Sinon, la propriété est considérée comme privée et vous devez utiliser BindingFlags.NonPublic | | BindingFlags.InstanceBindingFlags.Static (en Visual Basic, combiner les valeurs à l’aide de Or) pour l’obtenir.

La recherche respecte name la casse. La recherche inclut des propriétés statiques et publiques instance.

Si le courant Type représente un type générique construit, cette méthode retourne le PropertyInfo avec les paramètres de type remplacés par les arguments de type appropriés.

Si le current Type représente un paramètre de type dans la définition d’un type générique ou d’une méthode générique, cette méthode recherche les propriétés de la contrainte de classe.

Voir aussi

• PropertyInfo
• String
• DefaultBinder
• GetPropertyImpl(String, BindingFlags, Binder, Type, Type[], ParameterModifier[])
• GetProperties(BindingFlags)

Source:

Type.cs

Source:

Type.cs

Source:

Type.cs

public:
 System::Reflection::PropertyInfo ^ GetProperty(System::String ^ name, Type ^ returnType, cli::array <Type ^> ^ types);

public:
 virtual System::Reflection::PropertyInfo ^ GetProperty(System::String ^ name, Type ^ returnType, cli::array <Type ^> ^ types);

public System.Reflection.PropertyInfo? GetProperty (string name, Type? returnType, Type[] types);

public System.Reflection.PropertyInfo GetProperty (string name, Type returnType, Type[] types);

member this.GetProperty : string * Type * Type[] -> System.Reflection.PropertyInfo

abstract member GetProperty : string * Type * Type[] -> System.Reflection.PropertyInfo
override this.GetProperty : string * Type * Type[] -> System.Reflection.PropertyInfo

Public Function GetProperty (name As String, returnType As Type, types As Type()) As PropertyInfo

Paramètres

Retours

Objet représentant la propriété publique dont les paramètres correspondent aux types d'arguments spécifiés, si elle est trouvée ; sinon, null.

Implémente

Exceptions

Remarques

Une propriété est considérée comme publique à réflexion si elle a au moins un accesseur public. Sinon, la propriété est considérée comme privée et vous devez utiliser BindingFlags.NonPublic | | BindingFlags.InstanceBindingFlags.Static (en Visual Basic, combiner les valeurs à l’aide Orde ) pour l’obtenir.

La recherche name respecte la casse. La recherche inclut des propriétés de instance publiques et statiques publiques.

Si le actuel Type représente un type générique construit, cette méthode retourne le PropertyInfo avec les paramètres de type remplacés par les arguments de type appropriés.

Si le actuel Type représente un paramètre de type dans la définition d’un type générique ou d’une méthode générique, cette méthode recherche les propriétés de la contrainte de classe.

Voir aussi

• PropertyInfo
• String
• DefaultBinder
• GetPropertyImpl(String, BindingFlags, Binder, Type, Type[], ParameterModifier[])
• GetProperties(BindingFlags)

Source:

Type.cs

Source:

Type.cs

Source:

Type.cs

public:
 virtual System::Reflection::PropertyInfo ^ GetProperty(System::String ^ name, System::Reflection::BindingFlags bindingAttr);

public System.Reflection.PropertyInfo? GetProperty (string name, System.Reflection.BindingFlags bindingAttr);

public System.Reflection.PropertyInfo GetProperty (string name, System.Reflection.BindingFlags bindingAttr);

abstract member GetProperty : string * System.Reflection.BindingFlags -> System.Reflection.PropertyInfo
override this.GetProperty : string * System.Reflection.BindingFlags -> System.Reflection.PropertyInfo

Public Function GetProperty (name As String, bindingAttr As BindingFlags) As PropertyInfo

Paramètres

Retours

Objet représentant la propriété qui correspond aux critères spécifiés, si elle est trouvée ; sinon, null.

Implémente

Exceptions

Exemples

L’exemple suivant récupère le type d’une classe définie par l’utilisateur, récupère une propriété de cette classe et affiche le nom de la propriété conformément aux contraintes de liaison spécifiées.

using namespace System;
using namespace System::Reflection;
ref class MyClass
{
private:
   int myProperty;

public:

   property int MyProperty 
   {
      // Declare MyProperty.
      int get()
      {
         return myProperty;
      }

      void set( int value )
      {
         myProperty = value;
      }
   }
};

int main()
{
   try
   {
      // Get Type object of MyClass.
      Type^ myType = MyClass::typeid;
      
      // Get the PropertyInfo by passing the property name and specifying the BindingFlags.
      PropertyInfo^ myPropInfo = myType->GetProperty( "MyProperty", static_cast<BindingFlags>(BindingFlags::Public | BindingFlags::Instance) );
      
      // Display Name property to console.
      Console::WriteLine( "{0} is a property of MyClass.", myPropInfo->Name );
   }
   catch ( NullReferenceException^ e ) 
   {
      Console::WriteLine( "MyProperty does not exist in MyClass. {0}", e->Message );
   }
}

using System;
using System.Reflection;

class MyClass2
{
    // Declare MyProperty.
    public int MyProperty { get; set; }
}

public class MyTypeClass2
{
    public static void Main(string[] args)
    {
        try
        {
            // Get Type object of MyClass2.
            Type myType = typeof(MyClass2);

            // Get the PropertyInfo by passing the property name and specifying the BindingFlags.
            PropertyInfo myPropInfo = myType.GetProperty(
                "MyProperty",
                BindingFlags.Public | BindingFlags.Instance
                );

            // Display Name property to console.
            Console.WriteLine("{0} is a property of MyClass2.", myPropInfo.Name);
        }
        catch (NullReferenceException e)
        {
            Console.WriteLine("MyProperty does not exist in MyClass2." + e.Message);
        }
    }
}

open System
open System.Reflection

type MyClass() =
    let mutable myProperty = 0
    // Declare MyProperty.
    member _.MyProperty
        with get () =
            myProperty
        and set (value) =
            myProperty <- value

try
    // Get Type object of MyClass.
    let myType = typeof<MyClass>
    // Get the PropertyInfo by passing the property name and specifying the BindingFlags.
    let myPropInfo = myType.GetProperty("MyProperty", BindingFlags.Public ||| BindingFlags.Instance)
    // Display Name property to console.
    printfn $"{myPropInfo.Name} is a property of MyClass."
with :? NullReferenceException as e ->
    printfn $"MyProperty does not exist in MyClass.{e.Message}"

Imports System.Reflection
Module Module1
    Public Class MyClass1
        Private myProperty1 As Integer
        ' Declare MyProperty.
        Public Property MyProperty() As Integer
            Get
                Return myProperty1
            End Get
            Set(ByVal Value As Integer)
                myProperty1 = Value
            End Set
        End Property
        Public Shared Sub Main()
            Try
                ' Get a Type object corresponding to MyClass.
                Dim myType As Type = GetType(MyClass1)
                ' Get a PropertyInfo object by passing property name and specifying BindingFlags.
                Dim myPropInfo As PropertyInfo = myType.GetProperty("MyProperty", BindingFlags.Public Or BindingFlags.Instance)
                ' Display the Name property.
                Console.WriteLine("{0} is a property of MyClass.", myPropInfo.Name)
            Catch e As NullReferenceException
                Console.WriteLine("MyProperty does not exist in MyClass.", e.Message.ToString())
            End Try
        End Sub
    End Class
End Module 'Module1

Voir aussi

• PropertyInfo
• String
• BindingFlags
• DefaultBinder
• GetPropertyImpl(String, BindingFlags, Binder, Type, Type[], ParameterModifier[])
• GetProperties(BindingFlags)

Source:

Type.cs

Source:

Type.cs

Source:

Type.cs

public:
 System::Reflection::PropertyInfo ^ GetProperty(System::String ^ name);

public:
 virtual System::Reflection::PropertyInfo ^ GetProperty(System::String ^ name);

public System.Reflection.PropertyInfo? GetProperty (string name);

public System.Reflection.PropertyInfo GetProperty (string name);

member this.GetProperty : string -> System.Reflection.PropertyInfo

abstract member GetProperty : string -> System.Reflection.PropertyInfo
override this.GetProperty : string -> System.Reflection.PropertyInfo

Public Function GetProperty (name As String) As PropertyInfo

Paramètres

Retours

Objet représentant la propriété publique avec le nom spécifié, si elle est trouvée ; sinon, null.

Implémente

Exceptions

Exemples

L’exemple suivant récupère l’objet Type d’une classe définie par l’utilisateur, récupère une propriété de cette classe et affiche le nom de la propriété.

using namespace System;
using namespace System::Reflection;
ref class MyClass
{
private:
   int myProperty;

public:

   property int MyProperty 
   {
      // Declare MyProperty.
      int get()
      {
         return myProperty;
      }

      void set( int value )
      {
         myProperty = value;
      }
   }
};

int main()
{
   try
   {
      // Get the Type object corresponding to MyClass.
      Type^ myType = MyClass::typeid;
      
      // Get the PropertyInfo object by passing the property name.
      PropertyInfo^ myPropInfo = myType->GetProperty( "MyProperty" );
      
      // Display the property name.
      Console::WriteLine( "The {0} property exists in MyClass.", myPropInfo->Name );
   }
   catch ( NullReferenceException^ e ) 
   {
      Console::WriteLine( "The property does not exist in MyClass. {0}", e->Message );
   }
}

using System;
using System.Reflection;

class MyClass1
{
    // Declare MyProperty.
    public int MyProperty { get; set; }
}

public class MyTypeClass1
{
    public static void Main(string[] args)
    {
        try
        {
            // Get the Type object corresponding to MyClass1.
            Type myType = typeof(MyClass1);

            // Get the PropertyInfo object by passing the property name.
            PropertyInfo myPropInfo = myType.GetProperty("MyProperty");

            // Display the property name.
            Console.WriteLine("The {0} property exists in MyClass1.", myPropInfo.Name);
        }
        catch (NullReferenceException e)
        {
            Console.WriteLine("The property does not exist in MyClass1." + e.Message);
        }
    }
}

open System

type MyClass() =
    let mutable myProperty = 0
    // Declare MyProperty.
    member _.MyProperty
        with get () =
            myProperty
        and set (value) = 
            myProperty <- value

try
    // Get the Type object corresponding to MyClass.
    let myType = typeof<MyClass>
    // Get the PropertyInfo object by passing the property name.
    let myPropInfo = myType.GetProperty "MyProperty"
    // Display the property name.
    printfn $"The {myPropInfo.Name} property exists in MyClass."
with :? NullReferenceException as e ->
    printfn $"The property does not exist in MyClass.{e.Message}"

Imports System.Reflection
Class MyClass1
    Private myProperty1 As Integer
    ' Declare MyProperty.

    Public Property MyProperty() As Integer
        Get
            Return myProperty1
        End Get
        Set(ByVal Value As Integer)
            myProperty1 = Value
        End Set
    End Property
End Class

Public Class MyTypeClass
    Public Shared Sub Main(ByVal args() As String)
        Try
            ' Get Type Object corresponding to MyClass.
            Dim myType As Type = GetType(MyClass1)
            ' Get PropertyInfo object by passing property name.
            Dim myPropInfo As PropertyInfo = myType.GetProperty("MyProperty")
            ' Display Name property to console.
            Console.WriteLine("The {0} property exists in MyClass.", myPropInfo.Name)
        Catch e As NullReferenceException
            Console.WriteLine("The property does not exist in MyClass.", e.Message.ToString())
        End Try
    End Sub
End Class

Remarques

Pour plus d’informations sur cette API, consultez Remarques supplémentaires sur l’API pour Type.GetProperty.

Voir aussi

• PropertyInfo
• String
• DefaultBinder
• GetPropertyImpl(String, BindingFlags, Binder, Type, Type[], ParameterModifier[])
• GetProperties(BindingFlags)

Source:

Type.cs

Source:

Type.cs

Source:

Type.cs

public:
 System::Reflection::PropertyInfo ^ GetProperty(System::String ^ name, Type ^ returnType);

public:
 virtual System::Reflection::PropertyInfo ^ GetProperty(System::String ^ name, Type ^ returnType);

public System.Reflection.PropertyInfo? GetProperty (string name, Type? returnType);

public System.Reflection.PropertyInfo GetProperty (string name, Type returnType);

member this.GetProperty : string * Type -> System.Reflection.PropertyInfo

abstract member GetProperty : string * Type -> System.Reflection.PropertyInfo
override this.GetProperty : string * Type -> System.Reflection.PropertyInfo

Public Function GetProperty (name As String, returnType As Type) As PropertyInfo

Paramètres

Retours

Objet représentant la propriété publique avec le nom spécifié, si elle est trouvée ; sinon, null.

Implémente

Exceptions

Exemples

L’exemple suivant définit une classe avec une propriété et récupère le nom et le type de la propriété.

using namespace System;
using namespace System::Reflection;
ref class MyClass1
{
private:
   String^ myMessage;

public:

   property String^ MyProperty1 
   {
      String^ get()
      {
         return myMessage;
      }

      void set( String^ value )
      {
         myMessage = value;
      }
   }
};

int main()
{
   try
   {
      Type^ myType = MyClass1::typeid;
      
      // Get the PropertyInfo Object* representing MyProperty1.
      PropertyInfo^ myStringProperties1 = myType->GetProperty( "MyProperty1", String::typeid );
      Console::WriteLine( "The name of the first property of MyClass1 is {0}.", myStringProperties1->Name );
      Console::WriteLine( "The type of the first property of MyClass1 is {0}.", myStringProperties1->PropertyType );
   }
   catch ( ArgumentNullException^ e ) 
   {
      Console::WriteLine( "ArgumentNullException : {0}", e->Message );
   }
   catch ( AmbiguousMatchException^ e ) 
   {
      Console::WriteLine( "AmbiguousMatchException : {0}", e->Message );
   }
   catch ( NullReferenceException^ e ) 
   {
      Console::WriteLine( "Source : {0}", e->Source );
      Console::WriteLine( "Message : {0}", e->Message );
   }
   //Output:
   //The name of the first property of MyClass1 is MyProperty1.
   //The type of the first property of MyClass1 is System.String.

}

using System;
using System.Reflection;

class MyPropertyTypeClass
{
    public string MyProperty1 { get; set; } = "Hello World.";
}

class TestClass
{
    static void Main()
    {
        try
        {
            Type myType = typeof(MyPropertyTypeClass);

            // Get the PropertyInfo object representing MyProperty1.
            PropertyInfo myStringProperties1 = myType.GetProperty("MyProperty1", typeof(string));

            Console.WriteLine("The name of the first property of MyPropertyTypeClass is {0}.",
                myStringProperties1.Name);
            Console.WriteLine("The type of the first property of MyPropertyTypeClass is {0}.",
                myStringProperties1.PropertyType);
        }
        catch (ArgumentNullException e)
        {
            Console.WriteLine("ArgumentNullException :" + e.Message);
        }
        catch (AmbiguousMatchException e)
        {
            Console.WriteLine("AmbiguousMatchException :" + e.Message);
        }
        catch (NullReferenceException e)
        {
            Console.WriteLine("Source : {0}", e.Source);
            Console.WriteLine("Message : {0}", e.Message);
        }
        //Output:
        //The name of the first property of MyPropertyTypeClass is MyProperty1.
        //The type of the first property of MyPropertyTypeClass is System.String.
    }
}

open System
open System.Reflection

type MyClass1() =
    let mutable myMessage = "Hello World."
    member _.MyProperty1 
        with get () =
            myMessage
        and set (value) =
            myMessage <- value

try
    let myType = typeof<MyClass1>
    // Get the PropertyInfo object representing MyProperty1.
    let myStringProperties1 = myType.GetProperty("MyProperty1", typeof<string>)
    printfn $"The name of the first property of MyClass1 is {myStringProperties1.Name}."
    printfn $"The type of the first property of MyClass1 is {myStringProperties1.PropertyType}."
with
| :? ArgumentNullException as e ->
    printfn $"ArgumentNullException :{e.Message}"
| :? AmbiguousMatchException as e ->
    printfn $"AmbiguousMatchException :{e.Message}"
| :? NullReferenceException as e ->
    printfn $"Source : {e.Source}"
    printfn $"Message : {e.Message}"
// Output:
//     The name of the first property of MyClass1 is MyProperty1.
//     The type of the first property of MyClass1 is System.String.

Imports System.Reflection
Class MyClass1
    Private myMessage As [String] = "Hello World."
    Public Property MyProperty1() As String
        Get
            Return myMessage
        End Get
        Set(ByVal Value As String)
            myMessage = Value
        End Set
    End Property
End Class

Class TestClass
    Shared Sub Main()
        Try
            Dim myType As Type = GetType(MyClass1)
            ' Get the PropertyInfo object representing MyProperty1. 
            Dim myStringProperties1 As PropertyInfo = myType.GetProperty("MyProperty1", GetType(String))
            Console.WriteLine("The name of the first property of MyClass1 is {0}.", myStringProperties1.Name)
            Console.WriteLine("The type of the first property of MyClass1 is {0}.", myStringProperties1.PropertyType.ToString())
        Catch e As ArgumentNullException
            Console.WriteLine("ArgumentNullException :" + e.Message.ToString())
        Catch e As AmbiguousMatchException
            Console.WriteLine("AmbiguousMatchException :" + e.Message.ToString())
        Catch e As NullReferenceException
            Console.WriteLine("Source : {0}", e.Source.ToString())
            Console.WriteLine("Message : {0}", e.Message.ToString())
        End Try
    'Output:
    'The name of the first property of MyClass1 is MyProperty1.
    'The type of the first property of MyClass1 is System.String.

    End Sub
End Class

Remarques

Une propriété est considérée comme publique à réflexion si elle a au moins un accesseur public. Sinon, la propriété est considérée comme privée et vous devez utiliser BindingFlags.NonPublic | | BindingFlags.InstanceBindingFlags.Static (en Visual Basic, combiner les valeurs à l’aide Orde ) pour l’obtenir.

La recherche name respecte la casse. La recherche inclut des propriétés de instance publiques et statiques publiques.

Si le actuel Type représente un type générique construit, cette méthode retourne le PropertyInfo avec les paramètres de type remplacés par les arguments de type appropriés.

Si le actuel Type représente un paramètre de type dans la définition d’un type générique ou d’une méthode générique, cette méthode recherche les propriétés de la contrainte de classe.

Voir aussi

• PropertyInfo
• String
• DefaultBinder
• GetPropertyImpl(String, BindingFlags, Binder, Type, Type[], ParameterModifier[])
• GetProperties(BindingFlags)