ASP Dot NET Online Training Services by Quontra Solutions: ASP.NET XPathNavigator

XPathNavigator Compile() – How to compile Expression in asp.net XML

<%@ Page Language=“C#” AutoEventWireup=“true” %>
<%@ Import Namespace=“System.Xml” %>
<%@ Import Namespace=“System.Xml.XPath” %>
<%@ Import Namespace=“System.Drawing” %>
<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”>
<script runat=“server”>
void Page_Load(object sender, System.EventArgs e)
{
if (!Page.IsPostBack)
{
BulletedList1.ForeColor = Color.DeepPink;
BulletedList1.Font.Name = “Comic Sans MS”;
BulletedList1.Font.Size = FontUnit.Large;
BulletedList1.BulletStyle = BulletStyle.LowerRoman;
}
}
void Button1_Click(object sender, System.EventArgs e)
{
BulletedList1.Items.Clear();
string xmlPath = Request.PhysicalApplicationPath + @”App_Data\ITBookList.xml”;
XPathDocument xPathDoc = new XPathDocument(xmlPath);
XPathNavigator xPathNavigator = xPathDoc.CreateNavigator();
XPathExpression xPathExpr = xPathNavigator.Compile(TextBox1.Text);
XPathNodeIterator nodes = xPathNavigator.Select(xPathExpr);
while (nodes.MoveNext())
{
BulletedList1.Items.Add(nodes.Current.Value);
}
}
</script>
<html xmlns=“http://www.w3.org/1999/xhtml” >
<head id=“Head1″ runat=“server”>
<title>XPathNavigator Compile() - How to compile XPathExpression in asp.net xml</title>
</head>
<body>
<form id=“form1″ runat=“server”>
<div>
<h2 style=“color:IndianRed; font-style:italic;”>XPathNavigator Example: How To Use Compile() Method</h2>
<hr width=“575″ align=“left” color=“Pink” />
<asp:BulletedList
ID=“BulletedList1″
runat=“server”
>
</asp:BulletedList>
<br /><br />
<asp:Label
ID=“Label2″
runat=“server”
Font-Bold=“true”
Text=“XPath Expression”
ForeColor=“IndianRed”
>
</asp:Label>
<asp:TextBox
ID=“TextBox1″
runat=“server”
Text=“//book/name”
ForeColor=“Snow”
Width=“325″
BackColor=“IndianRed”
Height=“35″
Font-Bold=“true”
>
</asp:TextBox>
<br /><br />
<asp:Button
ID=“Button1″
runat=“server”
OnClick=“Button1_Click”
Text=“Evaluate XPath Expression”
Height=“40″
Font-Bold=“true”
ForeColor=“IndianRed”
/>
</div>
</form>
</body>
</html>

ASP Dot NET Online Training Services by Quontra Solutions

Tuesday, 29 July 2014

ASP.NET XPathNavigator – How to compile XPathExpression

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