public Query( ConnectionHandler con) { this.con = con; this.con.openConnection(this.con.currentconnection); this.cmd = new MySqlCommand(); }
virtual protected void button1_Click(object sender, EventArgs e) { DisplayGrid.Columns.Clear(); con = new ConnectionHandler(); Query quer = new Query(con); if (ColumnsList.CheckedItems.Count > 0) { List<List<string>> lis = quer.Select(TableComboBox.SelectedItem.ToString(), concatCheckedItems(), getCheckedItems()); FillDataGridView(lis); } else { MessageBox.Show("Seleziona degli elementi"); } }