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How to: Invoke a Delegate Method (Visual Basic)

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.
        End Sub