如何使用asp.net避免XML中的重复值？

Question

// Open the XML doc  
XmlDocument myXmlDocument = new XmlDocument();
myXmlDocument.Load(Server.MapPath("AddProducts.xml")); 
XmlNode myXmlNode = myXmlDocument.DocumentElement.FirstChild; 

// Create new XML element and populate its attributes  
XmlElement myXmlElement = myXmlDocument.CreateElement("product");
myXmlElement.SetAttribute("name", Server.HtmlEncode(txtname.Text)); 

// Insert data into the XML doc and save  
myXmlDocument.DocumentElement.InsertBefore(myXmlElement, myXmlNode);
myXmlDocument.Save(Server.MapPath("AddProducts.xml"));        

我的XML文件是：

<?xml version="1.0" encoding="utf-8"?>
<Footballers>
    <product name="iop" />
    <product name="Selvit E" />
    <product name="Selvit E" />
    <product name="Ventrifort A" />
    <product name="Generator" />
    <product name="TEst" />        
    <product name="test" />
    <product name="Test" />
    <product name="test" />
    <product name="ILT" />
    <product name="No Parking" />
    <product name="No Parking" />
    <product name="Livol Liquid" />
    <product name="G-promin" />
</Footballers>

在我的xml文件中存储重复的值。我不想存储重复的值。 我怎样才能做到这一点？

Answer 1

试试这个：

var doc = XDocument.Load(path)
var elements = doc.Root.Elements().Distinct();

var newDoc = new XDocument(
    new XElement("Footballers", elements));
newDoc.Save(newPath);