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vb.net - MessageBox with YesNoCancel - No & Cancel triggers same event

I have a message box with the YesNoCancel buttons...

  • Pressing Yes will do some action and close the application - works fine
  • Pressing No will do nothing and close the application - (see below)
  • Pressing Cancel will do nothing and keep the application open - (see below).

I'm using DialogResult.No for the No button and DialogResult.Cancel for the Cancel button. But pressing either of them triggers DialogResult.Cancel event. What's the problem?

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This should work fine:

Dim result As DialogResult = MessageBox.Show("message", "caption", MessageBoxButtons.YesNoCancel)
If result = DialogResult.Cancel Then
    MessageBox.Show("Cancel pressed")
ElseIf result = DialogResult.No Then
    MessageBox.Show("No pressed")
ElseIf result = DialogResult.Yes Then
    MessageBox.Show("Yes pressed")
End If

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