DataSet排序
//排序
if (ds != null && ds.Tables.Count > 0)
{
DataView dv = new DataView();
dv.Table = ds.Tables[0];
dv.Sort = "id asc";
DataTable dts = dv.ToTable();
DataSet dss = new DataSet();
dss.Tables.Add(dts);
return Connector.ToXml(dss);
}