Question

I have a winform with a wpf usercontrol on it (ElementHost1). The usercontrol contains only a button. How can I know when the wpf button has been clicked in my winform? How can I “redirect” the events from wpf usercontrol to winform?

Thanks.

Answer 1

This link might be helpful to you.

Or a simple event handling in VB.NET

Public Event ClickMe()

Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button1.Click
    RaiseEvent ClickMe()
End Sub

Then in your actual window you can have this:

Public Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    AddHandler SampleClick1.ClickMe, AddressOf Sample_Click
End Sub

Private Sub Sample_Click()
    MessageBox.Show("This is a proof!")
End Sub

That SampleClick1 variable is from the designer code generated available to the form for your use.

Friend WithEvents ElementHost1 As System.Windows.Forms.Integration.ElementHost
Friend SampleClick1 As WindowsApplication1.SampleClick