public void InitMaterialData(List <MeterialGroupThicknessDto> list) { _SelectedMaterialId = -1; _SelectedMaterialGroupId = -1; MaterialTypeList.Clear(); list.ForEach(d => MaterialTypeList.Add(d)); MaterialThicknessList.Clear(); if (list.Count > 0) { SelectedMaterialId = (int)list[0].MaterialCode; } }