C# (CSharp) OnCancelBtnClick.Invoke примеры использования

Пример #1

 private void btnCancel_Click(object sender, EventArgs e)
 {
     try
     {
         OnCancelBtnClick?.Invoke(sender, e);
     }
     catch (Exception ex)
     {
         this.StandardExceptionMsgBox(ex);
     }
 }

Пример #2

 private void btnCancel_Click(object sender, EventArgs e)
 {
     try
     {
         OnCancelBtnClick?.Invoke(sender, e);
     }
     catch (Exception ex)
     {
         this.StandardUnhandledErrorMsgBox(ex.Message);
     }
 }