private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
CloseFormHandler handler = FormCloseRequested;
CloseRequestedEventArgs args = new CloseRequestedEventArgs();
handler?.Invoke(this, args);
if (args.ForceClose)
{
// close even if validation error exists
e.Cancel = false;
}
else
{
// seems like user likes to save changes first!
e.Cancel = true;
}
}
IFormBuilder <TForm, TControl> IFormBuilder <TForm, TControl> .OnClose(CloseFormHandler action)
{
_form.OnClose += action;
return(this);
}
public static void AddCloseFormHandler(DependencyObject d, CloseFormHandler handler)
{
((UIElement)d).AddHandler(CloseFormEvent, handler);
}
public IFormBuilder <TControl> OnClose(CloseFormHandler action)
{
_form.OnClose += action;
return(this);
}
