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Linq to XML customize distinct function

Definition comparer class,
class ItemComparer : IEqualityComparer<XElement>
{
public bool Equals(XElement x, XElement y)
{
return x.Attribute("Name").Value == x.Attribute("Name").Value;
}
public int GetHashCode(XElement obj)
......

DOM4JÉú³ÉXMLÎĵµ


public int createXMLFile(String filename) {
  int returnValue = 0;
  Document document = DocumentHelper.createDocument();    //Éú³ÉDocument£¬ÓÃÓÚ¹ÜÀíXMLÎĵµ
  
  Element booksElement = document.addElement("books");    //Ìí¼Ó ......

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<?xml version="1.0" encoding="utf-8" standalone="no"?>
<Context>
<WatchedResource>WEB-INF/web.xml</WatchedResource>
<Resource auth="Container" maxActive="20" name="sss" password="123"
type="javax.sql.DataSource" />
<Resource auth="Container" ......

.NET XML ´®Ðл¯½²×ù

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        public ......

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   Attribute, Ö¸ÔÚ<Employee >ÖеĴ ......
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