通过

Type.IsMarshalByRefImpl 方法

  • 项目

实现 IsMarshalByRef 属性并确定 Type 是否按引用来进行封送。

**命名空间:**System
**程序集:**mscorlib（在 mscorlib.dll 中）

语法

声明
Protected Overridable Function IsMarshalByRefImpl As Boolean
用法
Dim returnValue As Boolean

returnValue = Me.IsMarshalByRefImpl

protected virtual bool IsMarshalByRefImpl ()

protected:
virtual bool IsMarshalByRefImpl ()

protected boolean IsMarshalByRefImpl ()

protected function IsMarshalByRefImpl () : boolean

返回值

如果 Type 是由引用封送的，则为 true；否则为 false。

备注

此方法可由派生类重写。

示例

下面的示例确定是否按引用封送给定的类型，并显示结果。

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

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.";
}

using namespace System;
using namespace System::Reflection;
public ref class MyTypeDelegatorClass: public TypeDelegator
{
public:
   String^ myElementType;

private:
   Type^ myType;

public:
   MyTypeDelegatorClass( Type^ myType )
      : TypeDelegator( myType )
   {
      this->myType = myType;
   }

protected:

   // Override IsMarshalByRefImpl.
   virtual bool IsMarshalByRefImpl() override
   {
      // Determine whether the type is marshalled by reference.
      if ( myType->IsMarshalByRef )
      {
         myElementType = " marshalled by reference";
         return true;
      }

      return false;
   }
};

public ref class MyTypeDemoClass{};


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

int main()
{
   try
   {
      MyTypeDelegatorClass^ myType;
      Console::WriteLine( "Determine whether MyContextBoundClass is marshalled by reference." );
      
      // Determine whether MyContextBoundClass type is marshalled by reference.
      myType = gcnew MyTypeDelegatorClass( MyContextBoundClass::typeid );
      if ( myType->IsMarshalByRef )
      {
         Console::WriteLine( "{0} is marshalled by reference.", MyContextBoundClass::typeid );
      }
      else
      {
         Console::WriteLine( "{0} is not marshalled by reference.", MyContextBoundClass::typeid );
      }
      
      // Determine whether int type is marshalled by reference.
      myType = gcnew MyTypeDelegatorClass( int::typeid );
      Console::WriteLine( "\nDetermine whether int is marshalled by reference." );
      if ( myType->IsMarshalByRef )
      {
         Console::WriteLine( "{0} is marshalled by reference.", int::typeid );
      }
      else
      {
         Console::WriteLine( "{0} is not marshalled by reference.", int::typeid );
      }
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "Exception: {0}", e->Message );
   }
}

import System.*;
import System.Reflection.*;

public class MyTypeDelegatorClass extends TypeDelegator
{
    public String myElementType = null;
    private Type myType = null;

    public MyTypeDelegatorClass(Type myType)
    {
        super(myType);
        this.myType = myType;
    } //MyTypeDelegatorClass

    // Override IsMarshalByRefImpl.
    protected boolean IsMarshalByRefImpl()
    {
        // Determine whether the type is marshalled by reference.
        if (myType.get_IsMarshalByRef()) {
            myElementType = " marshalled by reference";
            return true;
        }
        return false;
    } //IsMarshalByRefImpl
} //MyTypeDelegatorClass

public class MyTypeDemoClass
{
    public static void main(String[] args)
    {
        try {
            MyTypeDelegatorClass myType;
            Console.WriteLine("Determine whether MyContextBoundClass is" 
                + " marshalled by reference.");
            // Determine whether MyContextBoundClass type is marshalled
            // by reference.
            myType = new MyTypeDelegatorClass(MyContextBoundClass.
                class.ToType());
            if (myType.get_IsMarshalByRef()) {
                Console.WriteLine(MyContextBoundClass.class.ToType() 
                    + " is marshalled by reference.");
            }
            else {
                Console.WriteLine(MyContextBoundClass.class.ToType() 
                    + " is not marshalled by reference.");
            }
            // Determine whether int type is marshalled by reference.
            myType = new MyTypeDelegatorClass(int.class.ToType());
            Console.WriteLine("\nDetermine whether int is marshalled by" 
                + " reference.");
            if (myType.get_IsMarshalByRef()) {
                Console.WriteLine(int.class.ToType() 
                    + " is marshalled by reference.");
            }
            else {
                Console.WriteLine(int.class.ToType() 
                    + " is not marshalled by reference.");
            }
        }
        catch (System.Exception e) {
            Console.WriteLine("Exception: {0}", e.get_Message());
        }
    } //main
} //MyTypeDemoClass

// This class is used to demonstrate the IsMarshalByRefImpl method.
public class MyContextBoundClass extends ContextBoundObject
{
    public String myString = "This class is used to demonstrate members" 
        + " of the Type class.";
} //MyContextBoundClass

平台

Windows 98、Windows 2000 SP4、Windows Millennium Edition、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

Type 类
Type 成员
System 命名空间
IsMarshalByRef