C # dynamically generate XML and read it using javascript on the foreground

Considering that using dynamic pages on the homepage affects server performance, javascript is used to dynamically update the homepage.

Principle: Take press publication as an example. When a piece of news is sent in the background, an XML file is dynamically generated by accessing the database to save news information. When the front-end page is opened, use javascript to read and display XML files.

Background code:

SseEntities _ db = new sseEntities ();
Var newsToView = (from n in _ db. News select n). ToArray (). Reverse (). ToList ();

XmlDocument xd = new XmlDocument ();
XmlDeclaration xde;
Xde = xd. CreateXmlDeclaration ("1.0", "GBK", null );
Xd. AppendChild (xde );

XmlElement newslist = xd. CreateElement ("newslist ");
Xd. AppendChild (newslist );
XmlNode root = xd. SelectSingleNode ("newslist ");
XmlElement [] news = new XmlElement [4];
XmlElement [] text = new XmlElement [4];
XmlElement [] img = new XmlElement [4];
For (int I = 0; I <4; I ++)
{
News [I] = xd. CreateElement ("news ");
Text [I] = xd. CreateElement ("text ");
Img [I] = xd. CreateElement ("img ");
News [I]. SetAttribute ("id", I. ToString ());
If (I <newsToView. Count)
{
Text [I]. InnerText = newsToView [I]. Title;
Img [I]. InnerText = "Content/newsimages/slider_item1.png ";
}
Else
{
Text [I]. InnerText = "";
Img [I]. InnerText = "";
}
News [I]. AppendChild (text [I]);
News [I]. AppendChild (img [I]);
Root. AppendChild (news [I]);
}
Xd. Save (Server. MapPath ("../Sources/News. xml"); the front-end reads the Code:

<Script type = "text/javascript">
Function loadXML (xmlFile ){
Var xmlDoc;
If (! Window. ActiveXObject ){
Var parser = new DOMParser ();
XmlDoc = parser. parseFromString (xmlFile, "text/xml ");
} Else {
XmlDoc = new ActiveXObject ("Microsoft. XMLDOM ");
XmlDoc. async = "false ";
XmlDoc. load (xmlFile );
}
Return xmlDoc;
}
Var xmlDoc = loadXML ("Sources/News. xml ");
// Parse the xml file and determine whether an error occurs.
If (xmlDoc. parseError. errorCode! = 0 ){
Alert (xmlDoc. parseError. reason );
}
// Obtain the root node
Var nodes = xmlDoc.doc umentElement. childNodes;
</Script>

<Div id = "newsbody">
<Div id = "slider">
<Div class = "sliderItem" id = "slide1">
<Script type = "text/javascript">
Document. write ("Document. write (" ")
</Script>
</Div>
<! --/SliderItem -->
<Div class = "sliderItem" id = "slide2" style = "display: none">
<Script type = "text/javascript">
Document. write ("