我犯了错误,“表态t有初级钥匙”。 因此,我是如何确定主要钥匙的,当我叫“阅读Xml()”时,我是否没有这样做?
MemoryStream msXml = new MemoryStream(byteArray);
DataSet dsXml = new DataSet();
dsXml.ReadXml(msXml);
string s = "123456789";
DataRow foundRow = dsXml.Tables["Accounts"].Rows.Find(s);
<><> >>>>
http://www.w3schools.com/xml/cd_catalog.xml”rel=“nofollow noreferer”>example 。 我如何为每个裁谈会确定主要的关键?
增 编
感谢大家的帮助,我设法避免了。 如果我帮助别人的话,下面的例子对我工作。
DataSet dsXml = new DataSet();
dsXml.ReadXml(msXml);
DataTable tbl;
tbl = dsXml.Tables["Accounts"];
tbl.PrimaryKey = new DataColumn[] { tbl.Columns["Id"] };
你们正在把XML数据读到你的数据集中,但不是Schema,而Schema是确定一支PK的。
当你使用需要Pk但并未界定的“Fk”方法时,就会出现错误。
两者在装满数据或节省/装载xml和chem后都用人工确定。
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