ASP.NET XmlDocument - Update (change) node data (value)

XmlDocument - How to update (change) node data (value) programmatically in asp.net
XmlDocumentUpdateNode.aspx
<%@ Page Language="C#" AutoEventWireup="true" %>
<%@ Import Namespace="System.Xml" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
    void Button1_Click(object sender, System.EventArgs  e)
    {
        string xmlFilePath = Request.PhysicalApplicationPath + @"App_Data\ITBookList.xml";
        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.Load(xmlFilePath);

        XmlNode priceNode = xmlDoc.DocumentElement.SelectSingleNode("//book[1]/price");
        priceNode.FirstChild.Value = "100.00";
        xmlDoc.Save(xmlFilePath);
        Label1.Text = "price updated successfully! <br /> XPath //book[1]/price";
    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>XmlDocument - How to update (change) node data (value) programmatically in asp.net</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <h2 style="color:Salmon; font-style:italic;">XmlDocument Example: How to use update node value</h2>
        <hr width="525" align="left" color="DarkSalmon" />
        <br /><br />
        <asp:Label 
            ID="Label1" 
            runat="server"
            Font-Bold="true"
            ForeColor="DeepSkyBlue"
            Text=""
            Font-Names="Comic Sans MS"
            Font-Size="X-Large"
            >
        </asp:Label>
        <br /><br />
        <asp:Button 
            ID="Button1"
            runat="server"
            OnClick="Button1_Click"
            Text="Update PriceNode Value XPath: //book[1]/price"
            Height="40"
            Font-Bold="true"
            ForeColor="HotPink"
            />
    </div>
    </form>
</body>
</html>
ITBookList.xml
ITBookList.xml source code here.

   










Related asp.net example