protected void GetData(string selectedTable, string SelectedFilter = "None") { ViewAccess viewData = new ViewAccess(selectedTable); DataTable dataTable; if (SelectedFilter != "None") { string FilterID = txtFilterID.Text; dataTable = viewData.GetFilterdData(SelectedFilter, FilterID); } else { dataTable = viewData.GetUnFilterdData(); } ViewState["dt"] = dataTable; dataGrid_Update(); }