private void Butt_Click(object sender, RoutedEventArgs e) { try { enable(); Button btn = (Button)sender; txtroomno.Text = Convert.ToString(btn.Content); disc.ROOM_NO = txtroomno.Text; disc.Retrive_guestname(); DataTable dt = disc.CheckDiscount(); if (dt.Rows.Count > 0) { save.Content = "Update"; txtguestname.Text = disc.GUEST_NAME; txtparticular.Text = dt.Rows[0]["PARTICULAR"].ToString(); txtamount.Text = Math.Round(Convert.ToDecimal(dt.Rows[0]["AMOUNT"]), 2, MidpointRounding.AwayFromZero).ToString(); txtpercentage.Text = dt.Rows[0]["PERCENTAGE"].ToString(); Checkin_ID = dt.Rows[0]["CHECKIN_ID"].ToString(); if (txtpercentage.Text == "0") { txtpercentage.IsEnabled = false; txtamount.IsEnabled = true; } else { txtpercentage.IsEnabled = true; txtamount.IsEnabled = false; } } else { save.Content = "Save"; txtparticular.Text = ""; txtamount.Text = "0.00"; txtpercentage.Text = ""; txtguestname.Text = disc.GUEST_NAME; } txtregno.IsEnabled = false; } catch (Exception) { } }