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  if (!File.Exists(Constants.SYS_CONFIGURE_URL + @"\SaveAccount.xml"))
                                {
                                    FileStream fs = File.Create(Constants.SYS_CONFIGURE_URL + @"\SaveAccount.xml");
                                    fs.Close();
                                }
                                //±£´æÕ˺ÅÃÜÂë
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XmlDocument xmldoc= new XmlDocument();
xmldoc.Load(filename);
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XmlNodeList topM=xmldoc.DocumentElement.ChildNodes;
foreach(XmlElement element in topM)
{
if(ele ......

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try
{
xnformchild.InnerXml = drform[dc.ColumnName].ToString( ......

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DECLARE @x xml
SET @x = '<ROOT><a>111</a></ROOT>'
SELECT @x.query('/ROOT/a')
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