EventInfo.EventHandlerType Property

 
System_CAPS_noteNote

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Gets the Type object of the underlying event-handler delegate associated with this event.

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

Public Overridable ReadOnly Property EventHandlerType As Type

Property Value

Type: System.Type

A read-only Type object representing the delegate event handler.

Exception Condition
SecurityException

The caller does not have the required permission.

The following example uses the EventHandlerType property to discover the delegate type of an event and to display its parameter types.

The example defines a delegate named MyDelegate and an event named ev of type MyDelegate. The code in the Main method discovers the event signature by getting the delegate type of the event, getting the Invoke method of the delegate type, and then retrieving and displaying the parameters.

Imports System.Reflection

Public Delegate Sub MyDelegate(ByVal i As Integer)

Public Class MainClass
    Public Event ev As MyDelegate

    Public Shared Sub Main()
        Dim delegateType As Type = GetType(MainClass).GetEvent("ev").EventHandlerType
        Dim invoke As MethodInfo = delegateType.GetMethod("Invoke")
        Dim pars As ParameterInfo() = invoke.GetParameters()
        For Each p As ParameterInfo In pars
            Console.WriteLine(p.ParameterType)
        Next 
    End Sub 
End Class 
' The example displays the following output:
'     System.Int32

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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