public TabStudents() { InitializeComponent(); BusinessClass.CreateIfEx(); UpdateData(TableName); PresentationLayerClass.NonSortableGrid(dataGridView1); PresentationLayerClass.OnlyReadSwitch(panel1, 3, true); PresentationLayerClass.EnableDisableButtons(new Button[] { ButtonSelectGroupe, ButtonErace, ButtonEdit, ButtonSelectRoom, ButtonClear, ButtonOpen, ButtonSave }, false); }