C # Create, read, write XML file

The XML format is as follows

<?xml version= "1.0" encoding= "Utf-8"?>
<Advertisements>
<Ad>
<ImageUrl>001.jpg</ImageUrl>
<NavigateUrl>001.aspx</NavigateUrl>
<Impressions>10</Impressions>
<Keyword>gucas01</Keyword>
</Ad>
<Ad>
<ImageUrl>002.jpg</ImageUrl>
<NavigateUrl>002.aspx</NavigateUrl>
<Impressions>20</Impressions>
<Keyword>gucas02</Keyword>
</Ad>
<Ad>
<ImageUrl>003.jpg</ImageUrl>
<NavigateUrl>003.aspx</NavigateUrl>
<Impressions>30</Impressions>
<Keyword>gucas03</Keyword>
</Ad>
<Ad>
<ImageUrl>004.jpg</ImageUrl>
<NavigateUrl>004.aspx</NavigateUrl>
<Impressions>40</Impressions>
<Keyword>gucas04</Keyword>
</Ad>
<Ad>
<ImageUrl>005.jpg</ImageUrl>
<NavigateUrl>005.aspx</NavigateUrl>
<Impressions>50</Impressions>
<Keyword>gucas05</Keyword>
</Ad>
<Ad>
<ImageUrl>google.gif</ImageUrl>
<NavigateUrl>http://www.google.com</NavigateUrl>
<Impressions>30</Impressions>
<Keyword>google</Keyword>
</Ad>
</Advertisements>

Operations on XML files

<summary>
Creating an XML file
</summary>
<param name= "filename" ></param>
public void Createxmlfile (string filename)
{
XmlDocument xmldoc = new XmlDocument ();
XmlNode node;
node = xmldoc. Createxmldeclaration ("1.0", "Utf-8", null);
XmlDoc. AppendChild (node);
XmlNode root = xmldoc. CreateElement ("Users");
XmlDoc. AppendChild (root);
CreateNode (xmldoc, Root, "UserName", "zhengyd");
CreateNode (xmldoc, Root, "email", "[email PROTECTED],CN");
CreateNode (xmldoc, Root, "Url", "WWW.GUCAS.AN,CN");
CreateNode (xmldoc, Root, "age", "27");
Try
{
XmlDoc. Save (Server.MapPath (filename));
Response.Write ("Create XML file Myxml.xml succeeded!");
}
catch (Exception ex)
{
Response.Write (ex. Message);
}
}
<summary>
Write XML file
</summary>
<param name= "File" ></param>
public void Writexmlfile (string file)
{
XmlDocument Xmdoc = new XmlDocument ();
Try
{
Xmdoc. Load (Server.MapPath (file));
XmlNode root = Xmdoc. selectSingleNode ("advertisements");
if (root = null)
{
XmlNode node = Xmdoc. CreateNode (XmlNodeType.Element, "Ad", null);
CreateNode (Xmdoc, node, "ImageUrl", "google.gif");
CreateNode (Xmdoc, node, "NavigateUrl", "http://www.google.com");
CreateNode (Xmdoc, node, "Impressions", "30");
CreateNode (Xmdoc, node, "Keyword", "Google");
Root. AppendChild (node);
}
Xmdoc. Save (Server.MapPath (file));
Response.Write ("Write XML file XMLFile.xml succeeded. <br> ");
}
catch (Exception ex) {
Response.Write (ex. Message);
}
}
<summary>
Create a Node
</summary>
<param name= "XmlDoc" ></param>
<param name= "ParentNode" ></param>
<param name= "Name" ></param>
<param name= "Value" ></param>
public void CreateNode (XmlDocument xmldoc, XmlNode parentnode, string name, String value)
{
XmlNode node = xmldoc. CreateNode (xmlnodetype.element, name, NULL);
Node. InnerText = value;
ParentNode. AppendChild (node);
}

<summary>
Reading an XML file
</summary>
<param name= "File" ></param>
private void ReadFile (string file)
{
XmlDocument xmldoc = new XmlDocument ();
Try
{
XmlDoc. Load (Server.MapPath (file));
XmlNode node = xmldoc. selectSingleNode ("advertisements");
if (node! = NULL)
{
TreeNode root = new TreeNode ();
Root. Text = node. Name;
TVXML.NODES.ADD (root);
foreach (XmlNode xnode in xmldoc. SelectNodes ("Advertisements/ad"))
{
TreeNode tnode = new TreeNode ();
Tnode. Text = Server.HTMLEncode ("<" + XNode. Name + ">");
Root. Childnodes.add (tnode);
foreach (XmlNode xcnode in XNode. ChildNodes)
{
TreeNode Tcnode = new TreeNode ();
Tcnode. Text = Server.HTMLEncode ("<" + Xcnode. Name + ">" + xcnode. InnerText + "</" + Xcnode. Name + ">");
Tnode. Childnodes.add (Tcnode);
}
TreeNode Ttnode = new TreeNode ();
Ttnode. Text = Server.HTMLEncode ("</" + xnode. Name + "");
Root. Childnodes.add (Ttnode);
}
TreeNode Tpnode = new TreeNode ();
Tpnode. Text = Server.HTMLEncode ("</" + node. Name + ">");
TVXML.NODES.ADD (Tpnode);
}
}
catch (Exception ex)
{
Response.Write (ex. Message);
}
}

C # Create, read, write XML file