joe-yang

摘要： 将DataSet转换为xml时，若DataSet某一列全部为dbnull时，方法1不会丢失该列，方法2会丢失该列。方法1：using (StringWriter sw = new StringWriter()) { ds.WriteXml(sw, XmlWriteMode.WriteSchema); ReturnXml = sw.ToString(); return ReturnXml; }方法2... 阅读全文