Question

I have MainWindow with a button, under the button click event I want MainWindow to open Window1, another window I have created beforehand. What is the simplest way to do this? Also I have a canvas in Window1 that I want to display a page (Page1) on a button click.

Answer 1

If’ i understood your question, then acc. to me:

MainWindow.vb – Create a handler for Click event of Button

Public Sub Button_Click ( ... )

    Dim window1 as new Window1(True) ' Create Window1 with isMainWindow = true and display it as a dialog.
    window1.ShowDialog()

End Sub

Window1.vb – Create a bool property to check if initiated by MainWindow with isMainWindow = true.

Public Sub New(isMainWindow As Boolean)
    ...
    If (isMainWindow) Then
        MyCanvas.Children.Add(new Page1());
    End If
    ...
End Public