private int DeleteOldData() { string RoleId = ddlRoleList.SelectedValue; int PermissionId = Convert.ToInt32(ddlPermissionList.SelectedValue); TabPermissionController tab_permission_obj = new TabPermissionController(); DataTable dt = tab_permission_obj.GetListByRoleIdPermissionId(RoleId, PermissionId); int TabPermissionId = -1, result = -1; for (int i = 0; i < dt.Rows.Count; i++) { TabPermissionId = Convert.ToInt32(dt.Rows[i]["TabPermissionId"].ToString()); result = tab_permission_obj.DeleteTabPermission(TabPermissionId); } return(result); }