private Task dbSend()
        {
            return Task.Run(() =>
                 {
                     try
                     {
                         Thread.Sleep(2000);
                         //throw new Exception("что-то не то");
                     }
                     catch (Exception)
                     {
                         throw;
                     }
                 });
        }

        private async void Form1_DoubleClick(object sender, EventArgs e)
        {
            try
            {
                await dbSend();
                MessageBox.Show("Ok");

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

        }