Type.GetTypeHandle 方法

获取指定对象的 Type 的句柄。

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

语法

声明
Public Shared Function GetTypeHandle ( _
    o As Object _
) As RuntimeTypeHandle
用法
Dim o As Object
Dim returnValue As RuntimeTypeHandle

returnValue = Type.GetTypeHandle(o)

public static RuntimeTypeHandle GetTypeHandle (
    Object o
)

public:
static RuntimeTypeHandle GetTypeHandle (
    Object^ o
)

public static RuntimeTypeHandle GetTypeHandle (
    Object o
)

public static function GetTypeHandle (
    o : Object
) : RuntimeTypeHandle

参数

• o
  要获取类型句柄的 Object。

返回值

指定 Object 的 Type 的句柄。

备注

这些句柄仅在获取它们的应用程序域中有效。

示例

下面的示例定义类 MyClass1，获取它的实例，并检索该对象的运行时句柄。

Imports System
Imports System.Reflection

 _
Public Class MyClass1
   Private x As Integer = 0
   
   Public Function MyMethod() As Integer
      Return x
   End Function 'MyMethod
End Class 'MyClass1
 _
Public Class MyClass2
   
   Public Shared Sub Main()
      Dim myClass1 As New MyClass1()
      
      ' Get the RuntimeTypeHandle from an object.
      Dim myRTHFromObject As RuntimeTypeHandle = Type.GetTypeHandle(myClass1)
      ' Get the RuntimeTypeHandle from a type.
      Dim myRTHFromType As RuntimeTypeHandle = GetType(MyClass1).TypeHandle
      
      Console.WriteLine("myRTHFromObject.Value: {0}", myRTHFromObject.Value)
      Console.WriteLine("myRTHFromObject.Type: {0}", myRTHFromObject.GetType())
      Console.WriteLine("myRTHFromType.Value: {0}", myRTHFromType.Value)
      Console.WriteLine("myRTHFromType.Type: {0}", myRTHFromType.GetType())
   End Sub 'Main 
End Class 'MyClass2

using System;
using System.Reflection;
public class MyClass1
{
    private int x=0;
    public int MyMethod()
    {
        return x;
    }
}
public class MyClass2
{
    public static void Main()
    {
        MyClass1 myClass1 = new MyClass1();

        // Get the RuntimeTypeHandle from an object.
        RuntimeTypeHandle myRTHFromObject = Type.GetTypeHandle(myClass1);
        // Get the RuntimeTypeHandle from a type.
        RuntimeTypeHandle myRTHFromType = typeof(MyClass1).TypeHandle;

        Console.WriteLine("myRTHFromObject.Value: {0}", myRTHFromObject.Value);
        Console.WriteLine("myRTHFromObject.Type: {0}", myRTHFromObject.GetType());
        Console.WriteLine("myRTHFromType.Value: {0}", myRTHFromType.Value);
        Console.WriteLine("myRTHFromType.Type: {0}", myRTHFromType.GetType());

    }
}

using namespace System;
using namespace System::Reflection;
public ref class MyClass1
{
private:
   int x;

public:
   int MyMethod()
   {
      return x;
   }
};

int main()
{
   MyClass1^ myClass1 = gcnew MyClass1;
   
   // Get the RuntimeTypeHandle from an object.
   RuntimeTypeHandle myRTHFromObject = Type::GetTypeHandle( myClass1 );
   
   // Get the RuntimeTypeHandle from a type.
   RuntimeTypeHandle myRTHFromType = MyClass1::typeid->TypeHandle;
   Console::WriteLine( "myRTHFromObject.Value: {0}", myRTHFromObject.Value );
   Console::WriteLine( "myRTHFromObject.Type: {0}", myRTHFromObject.GetType() );
   Console::WriteLine( "myRTHFromType.Value: {0}", myRTHFromType.Value );
   Console::WriteLine( "myRTHFromType.Type: {0}", myRTHFromType.GetType() );
}

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

public class MyClass1
{
    private int x = 0;

    public int MyMethod()
    {
        return x;
    } //MyMethod
} //MyClass1

public class MyClass2
{
    public static void main(String[] args)
    {
        MyClass1 myClass1 = new MyClass1();
        // Get the RuntimeTypeHandle from an object.
        RuntimeTypeHandle myRTHFromObject = Type.GetTypeHandle(myClass1);
        // Get the RuntimeTypeHandle from a type.
        RuntimeTypeHandle myRTHFromType = (MyClass1.class.ToType()).
            get_TypeHandle();

        Console.WriteLine("myRTHFromObject.Value: {0}", myRTHFromObject.
            get_Value());
        Console.WriteLine("myRTHFromObject.Type: {0}", myRTHFromObject.
            GetType());
        Console.WriteLine("myRTHFromType.Value: {0}", myRTHFromType.
            get_Value());
        Console.WriteLine("myRTHFromType.Type: {0}", myRTHFromType.
            GetType());
    }//main 
} //MyClass2

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
RuntimeTypeHandle 结构
TypeHandle
GetTypeFromHandle