ligerGrid 取得选中行的数据

   var SelectUserIdArr = [];        

   function GetData()

        {

            var returnValue = "";

            var grid = $("#maingrid").ligerGrid();

            SelectUserIdArr.length = 0;

            var rows = grid.getSelecteds();

            if (rows.length == 0) {

                returnValue = "";

            } else {

                for (var rowid in rows) {

                    SelectUserIdArr.push(rows[rowid]["ID"]);

                }

                returnValue  = (SelectUserIdArr.join(","));

            }

            window.parent.setCallbackValue(returnValue);

            frameElement.dialog.close();

        }