protected void AllGrid_OnRowCommand(object sender, GridViewCommandEventArgs e) { if (e.CommandName == "AddUser") { var index = Convert.ToInt32(e.CommandArgument); var dataKey = AllGrid.DataKeys[index]; if (dataKey == null) { return; } var userId = dataKey.Value.ToString(); var departmentId = int.Parse(Request.QueryString[QueryStringParameters.DepartmentId]); _departmentDal.AddUser(departmentId, userId); RefreshGrid(); } }