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     ÔÚÓÃLINQ to XML·½·¨Save()°ÑXMLÎĵµ±£´æµ½Îļþʱ£¬»á×Ô¶¯´´½¨Îĵµ¿ªÍ·µÄÉùÃ÷£¬Ò»°ã²»ÐèÒªÓÃXDeclaration()À´´´½¨¡£      XDocument.Load()ÊǾ²Ì¬µÄ£¬¿ÉÒÔ¼ÓÔØÓɱðµÄ³ÌÐò´´½¨µÄÎĵµ£¬´´½¨XDocumentʵÀý¡£
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         string xmlFileName = @"C:\......\example.xml";
         xdoc.Save(xmlFileName);    //½«¹¹ÔìºÃµÄXMLÎĵµ£¬´æ´¢ÎªÎļþ

         XDocument xdoc2 = XDocument.Load(xmlFileName);    //½«´ÅÅÌÖеÄÎĵµ¶ÁÈ¡³öÀ´
         Cosole.WriteLine(xdoc2);
         ......
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        xdoc.Declaration = new XDeclaration("1.0","us-ascii","yes");


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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)
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=
 
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"Microsoft.XMLDOM"
);
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.
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=
 
false
;
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×î³£¼ûµÄXMLÊý¾ÝÀàÐÍÓУºElement, Attribute£¬Comment, Text.  
 
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   Attribute, Ö¸ÔÚ<Employee >ÖеĴ ......
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