private void btnSave_Click(object sender, EventArgs e) { PlayingBoard playingBoard = FrmPlayingBoard.SelectedPlayingBoard; if (int.Parse(txtPrice.Text.Trim()).Equals(0) || string.IsNullOrWhiteSpace(txtPrice.Text.Trim()) || string.IsNullOrEmpty(txtPrice.Text.Trim())) { DataValidationMesaage.BlankTextBox("بهای میز"); return; } DataBaseDataContext myConnection = Setting.DataBase; if ( myConnection.PlayingBoardTypes.Any( a => a.Type == cmbType.SelectedItem.ToString() && a.PlayingBoard == playingBoard)) { DataValidationMesaage.DuplicateData(cmbType.SelectedItem.ToString()); return; } PlayingBoardType.Insert(playingBoard, cmbType.SelectedItem.ToString(), int.Parse(txtPrice.Text.Trim()), myConnection); DataValidationMesaage.AcceptMessage(); PlayingBoardType.ShowList_By_PlayingBoard(playingBoard, lstPlayingBoardTypes, myConnection); myConnection.Dispose(); }