<asp:Button ID="btnaddrecords" runat="server" onclick="btnaddrecords_Click"

Text="Add Records" />

<asp:GridView ID="GridView1" runat="server">

</asp:GridView>

<asp:Button ID="btn_showdata" runat="server" onclick="btn_showdata_Click"

Text="Show Xml Data" />

</form>

</body>

</html>

using System;

using System.Collections;

using System.Configuration;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;

using System.Data.SqlClient;

namespace Saving_User_Input_Data_to_an_XML

{

public partial class _Default : System.Web.UI.Page

{

static DataSet ds;

static DataTable dt;

static DataRow dr;

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

ds = new DataSet();

ds.ReadXml(MapPath("data.xml"));

dt = ds.Tables["student"];

}

}

protected void btnaddrecords_Click(object sender, EventArgs e)

{

dr = dt.NewRow();

dr["sid"] = TextBox1.Text;

dr["sname"] = TextBox2.Text;

dr["smarks"] = TextBox3.Text;

dr["saddress"] = TextBox4.Text;

dt.Rows.Add(dr);

ds.WriteXml(Server.MapPath("data.xml"));

Response.Write("Record Successfully Inserted");

clear();

}

void clear()

{

TextBox1.Text = "";

TextBox2.Text = "";

TextBox3.Text = "";

TextBox4.Text = "";

}

protected void btn_showdata_Click(object sender, EventArgs e)

{

DataSet ds = new DataSet();

ds.ReadXml(Server.MapPath("data.xml"));

GridView1.DataSource = ds;

GridView1.DataBind();

}

}

}

Thanks