How to: Invoke a Delegate Method

This example shows how to associate a method with a delegate and then invoke that method through the delegate.

Create the delegate and matching procedures

1. Create a delegate named MySubDelegate.

       Delegate Sub MySubDelegate(ByVal x As Integer)
   

2. Declare a class that contains a method with the same signature as the delegate.

       Class class1
           Sub Sub1(ByVal x As Integer)
               MsgBox("The value of x is: " & CStr(x))
           End Sub
       End Class
   

3. Define a method that creates an instance of the delegate and invokes the method associated with the delegate by calling the built-in Invoke method.

       Protected Sub DelegateTest()
           Dim c1 As New class1
           ' Create an instance of the delegate.
           Dim msd As MySubDelegate = AddressOf c1.Sub1
           ' Call the method.
           msd.Invoke(10)
       End Sub
   

See Also

Tasks

How to: Write Event Handlers

Concepts

Delegates and the AddressOf Operator

Events and Event Handlers

AddHandler and RemoveHandler

Multithreaded Applications

Reference

Delegate Statement