Export (0) Print
Expand All

Type.IsMarshalByRefImpl Method

Implements the IsMarshalByRef property and determines whether the Type is marshalled by reference.

[Visual Basic]
Protected Overridable Function IsMarshalByRefImpl() As Boolean
[C#]
protected virtual bool IsMarshalByRefImpl();
[C++]
protected: virtual bool IsMarshalByRefImpl();
[JScript]
protected function IsMarshalByRefImpl() : Boolean;

Return Value

true if the Type is marshalled by reference; otherwise, false.

Remarks

This method can be overridden by a derived class.

Example

[Visual Basic, C#, C++] The following example determines whether the given type is marshalled by reference and displays the result.

[Visual Basic] 
Imports System
Imports System.Reflection
Imports Microsoft.VisualBasic

Public Class MyTypeDelegatorClass
    Inherits TypeDelegator
    Public myElementType As String = Nothing
    Private myType As Type = Nothing
    Public Sub New(ByVal myType As Type)
        MyBase.New(myType)
        Me.myType = myType
    End Sub 'New

    ' Override IsMarshalByRefImpl.
    Protected Overrides Function IsMarshalByRefImpl() As Boolean
        ' Determine whether the type is marshalled by reference.
        If myType.IsMarshalByRef Then
            myElementType = " marshalled by reference"
            Return True
        End If
        Return False
    End Function 'IsMarshalByRefImpl
End Class 'MyTypeDelegatorClass

Public Class MyTypeDemoClass

    Public Shared Sub Main()
        Try
            Dim myType As MyTypeDelegatorClass
            Console.WriteLine("Determine whether MyContextBoundClass is marshalled by reference.")
            ' Determine whether MyContextBoundClass is marshalled by reference.
            myType = New MyTypeDelegatorClass(GetType(MyContextBoundClass))
            If myType.IsMarshalByRef Then
                Console.WriteLine(GetType(MyContextBoundClass).ToString() + " is marshalled by reference.")
            Else
                Console.WriteLine(GetType(MyContextBoundClass).ToString() + " is not marshalled by reference.")
            End If

            ' Determine whether int is marshalled by reference.
            myType = New MyTypeDelegatorClass(GetType(Integer))
            Console.WriteLine(ControlChars.NewLine + "Determine whether int is marshalled by reference.")
            If myType.IsMarshalByRef Then
                Console.WriteLine(GetType(Integer).ToString() + " is marshalled by reference.")
            Else
                Console.WriteLine(GetType(Integer).ToString() + " is not marshalled by reference.")
            End If
        Catch e As Exception
            Console.WriteLine("Exception: {0}", e.Message.ToString())
        End Try
    End Sub 'Main
End Class 'MyTypeDemoClass

' This class is used to demonstrate 'IsMarshalByRefImpl' method.
Public Class MyContextBoundClass
    Inherits ContextBoundObject
    Public myString As String = "This class is used to demonstrate members of the Type class."
End Class 'MyContextBoundClass

[C#] 
using System;
using System.Reflection;
public class MyTypeDelegatorClass : TypeDelegator
{
    public string myElementType = null;
    private Type myType = null ; 
    public MyTypeDelegatorClass(Type myType) : base(myType)
    {
        this.myType = myType;
    }
    // Override IsMarshalByRefImpl.
    protected override bool IsMarshalByRefImpl()
    {
        // Determine whether the type is marshalled by reference.
        if(myType.IsMarshalByRef)
        { 
            myElementType = " marshalled by reference";
            return true;
        }
        return false;
    }
}
public class MyTypeDemoClass
{
    public static void Main()
    {
        try
        {
            MyTypeDelegatorClass myType;
            Console.WriteLine ("Determine whether MyContextBoundClass is marshalled by reference.");
            // Determine whether MyContextBoundClass type is marshalled by reference.
            myType = new MyTypeDelegatorClass(typeof(MyContextBoundClass));
            if( myType.IsMarshalByRef )
            {
                Console.WriteLine(typeof(MyContextBoundClass) + " is marshalled by reference.");
            }
            else
            {
                Console.WriteLine(typeof(MyContextBoundClass) + " is not marshalled by reference.");
            }

            // Determine whether int type is marshalled by reference.
            myType = new MyTypeDelegatorClass(typeof(int));
            Console.WriteLine ("\nDetermine whether int is marshalled by reference.");
            if( myType.IsMarshalByRef)
            {
                Console.WriteLine(typeof(int) + " is marshalled by reference.");
            }
            else
            {
                Console.WriteLine(typeof(int) + " is not marshalled by reference.");
            }
        }
        catch( Exception e )
        {
            Console.WriteLine("Exception: {0}", e.Message);
        }
    }
}
// This class is used to demonstrate the IsMarshalByRefImpl method.
public class MyContextBoundClass : ContextBoundObject
{
    public string myString = "This class is used to demonstrate members of the Type class.";
}

[C++] 
#using <mscorlib.dll>

using namespace System;
using namespace System::Reflection;

public __gc class MyTypeDelegatorClass : public TypeDelegator {
public:
   String* myElementType;
private:
   Type* myType;
public:
   MyTypeDelegatorClass(Type* myType) : TypeDelegator(myType) {
      this->myType = myType;
   }
   // Override IsMarshalByRefImpl.
protected:
   bool IsMarshalByRefImpl() {
      // Determine whether the type is marshalled by reference.
      if (myType->IsMarshalByRef) {
         myElementType = S" marshalled by reference";
         return true;
      }
      return false;
   }
};

public __gc class MyTypeDemoClass {
};

// This class is used to demonstrate the IsMarshalByRefImpl method.
public __gc class MyContextBoundClass : public ContextBoundObject {
public:
   String* myString;
};

int main() {
   try {
      MyTypeDelegatorClass* myType;
      Console::WriteLine (S"Determine whether MyContextBoundClass is marshalled by reference.");
      // Determine whether MyContextBoundClass type is marshalled by reference.
      myType = new MyTypeDelegatorClass(__typeof(MyContextBoundClass));
      if (myType->IsMarshalByRef) {
         Console::WriteLine(S"{0} is marshalled by reference.", __typeof(MyContextBoundClass));
      } else {
         Console::WriteLine(S"{0} is not marshalled by reference.", __typeof(MyContextBoundClass));
      }

      // Determine whether int type is marshalled by reference.
      myType = new MyTypeDelegatorClass(__typeof(int));
      Console::WriteLine (S"\nDetermine whether int is marshalled by reference.");
      if (myType->IsMarshalByRef) {
         Console::WriteLine(S"{0} is marshalled by reference.", __typeof(int));
      } else {
         Console::WriteLine(S"{0} is not marshalled by reference.", __typeof(int));
      }
   } catch (Exception* e) {
      Console::WriteLine(S"Exception: {0}", e->Message);
   }
}

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

Type Class | Type Members | System Namespace | IsMarshalByRef

Show:
© 2014 Microsoft