How to delete Location Tag (Node) programmatically in Web.Config file using C# in ASP.Net

Please refer this code.

HTML

Location
<asp:TextBox ID="txtLocation" runat="server" />
<br />
<br />
Delete Location path
<asp:Button ID="btnDeleteLocationPath" runat="server" Text="Delete Location Path"
    OnClick="DeleteLocationPath" />

Namespace

using System.Xml;

C#

protected void DeleteLocationPath(object sender, EventArgs e)
{
    string path = Server.MapPath("~/Web.Config");
    XmlDocument xDoc = new XmlDocument();
    xDoc.Load(path);
    XmlNodeList list = xDoc.DocumentElement.SelectNodes("location");
    if (list.Count > 0)
    {
        foreach (XmlNode node in list)
        {
            if (node.Attributes["path"].Value == this.txtLocation.Text.Trim())
            {
                node.ParentNode.RemoveChild(node);
                XmlTextWriter xwriter = new XmlTextWriter(path, null);
                xDoc.WriteTo(xwriter);
                xwriter.Close();
                break;
            }
        }
    }
}