EventInfo.EventHandlerType-Eigenschaft

Ruft das Type-Objekt des zugrunde liegenden Ereignishandlerdelegaten ab, der dem jeweiligen Ereignis zugeordnet ist.

Namespace: System.Reflection
Assembly: mscorlib (in mscorlib.dll)

Syntax

'Declaration
Public ReadOnly Property EventHandlerType As Type
'Usage
Dim instance As EventInfo
Dim value As Type

value = instance.EventHandlerType

public Type EventHandlerType { get; }

public:
virtual property Type^ EventHandlerType {
    Type^ get () sealed;
}

/** @property */
public final Type get_EventHandlerType ()

public final function get EventHandlerType () : Type

Eigenschaftenwert

Ein schreibgeschütztes Type-Objekt, das den Ereignishandler des Delegaten darstellt.

Ausnahmen

Beispiel

' The following example uses instances of classes in 
' the System.Reflection namespace to discover an event argument type.
Imports System
Imports System.Reflection
Imports Microsoft.VisualBasic

Public Class MainClass
    Delegate Sub MyDelegate(ByVal i As Integer)
    Public Event ev As MyDelegate
    Public Sub Fire(ByVal i As Integer)
        AddHandler ev, AddressOf Me.Fire
    End Sub 'Fire

    Public Shared Sub Main()
        Dim deleg As Type = GetType(MainClass).GetEvent("ev").EventHandlerType
        Dim invoke As MethodInfo = deleg.GetMethod("Invoke")
        Dim pars As ParameterInfo() = invoke.GetParameters()
        Dim p As ParameterInfo
        For Each p In pars
            Console.WriteLine(p.ParameterType)
        Next p
    End Sub 'Main
End Class 'MainClass

// The following example uses instances of classes in 
// the System.Reflection namespace to discover an event argument type.
using System;
using System.Reflection;

public delegate void MyDelegate(int i);
public class MainClass 
{
    public event MyDelegate ev;
    public void Fire(int i) 
    {
        ev += new MyDelegate(this.Fire);
    }

    public static void Main() 
    {
        Type deleg = typeof(MainClass).GetEvent("ev").EventHandlerType;
        MethodInfo invoke = deleg.GetMethod("Invoke");
        ParameterInfo[] pars = invoke.GetParameters();
        foreach (ParameterInfo p in pars) 
        {
            Console.WriteLine(p.ParameterType);
        }
    }
}

// The following example uses instances of classes in
// the System::Reflection namespace to discover an event argument type.
using namespace System;
using namespace System::Reflection;

public delegate void MyDelegate( int i );
public ref class MainClass
{
public:
   event MyDelegate^ ev;
   void Fire( int i )
   {
      ev += gcnew MyDelegate( this, &MainClass::Fire );
   }
};

int main()
{
   Type^ deleg = MainClass::typeid->GetEvent( "ev" )->EventHandlerType;
   MethodInfo^ invoke = deleg->GetMethod( "Invoke" );
   array<ParameterInfo^>^pars = invoke->GetParameters();
   System::Collections::IEnumerator^ myEnum = pars->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      ParameterInfo^ p = safe_cast<ParameterInfo^>(myEnum->Current);
      Console::WriteLine( p->ParameterType );
   }
}

.NET Framework-Sicherheit

• ReflectionPermission  zum Zurückgeben von Eigenschaften, die nicht öffentlich sind. Zugeordnete Enumeration: ReflectionPermissionFlag.TypeInformation

Plattformen

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile für Pocket PC, Windows Mobile für Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

.NET Compact Framework

Unterstützt in: 2.0, 1.0

Siehe auch

Referenz

EventInfo-Klasse
EventInfo-Member
System.Reflection-Namespace
Type
Delegate
EventHandler