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Fill XML data into StringBuilder from XmlTextReader

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs"  Inherits="ReadXmlEfficient" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">     <title>Untitled Page</title> </head> <body>     <form id="form1" runat="server">     <div>     <asp:Literal id="XmlText" runat="server"></asp:Literal>     </div>     </form> </body> </html> File: Default.aspx.cs using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Text; using System.Xml; public partial class ReadXmlEfficient : System.Web.UI.Page {   protected void Page_Load(object sender, EventArgs e)   {     string xmlFile = Server.MapPath("Data.xml");     XmlTextReader reader = new XmlTextReader(xmlFile);     StringBuilder str = new StringBuilder();     reader.ReadStartElement("DvdList");     while (reader.Read())     {       if ((reader.Name == "DVD") && (reader.NodeType == XmlNodeType.Element))       {         reader.ReadStartElement("DVD");         str.Append("<ul><b>");         str.Append(reader.ReadElementString("Title"));         str.Append("</b><li>");         str.Append(reader.ReadElementString("Director"));         str.Append("</li><li>");         str.Append(String.Format("{0:C}",Decimal.Parse(reader.ReadElementString("Price"))));         str.Append("</li></ul>");       }     }     reader.Close();     XmlText.Text = str.ToString();   } } File: Data.xml <?xml version="1.0"?> <DvdList>    <DVD ID="1" Category="Category 1">       <Title>title 1</Title>       <Director>directory 2</Director>       <Price>1</Price>       <Starring>          <Star>star 1</Star>          <Star>star 2</Star>       </Starring>    </DVD>    <DVD ID="2" Category="Category 2">       <Title>title 2</Title>       <Director>directory 2</Director>       <Price>2</Price>       <Starring>          <Star>star 3</Star>          <Star>star 4</Star>       </Starring>    </DVD> </DvdList>