This is an example of Inserting and Retrieving data from xml file.

private void Page_Load(object sender, System.EventArgs e)
{
// Put user code to initialize the page here

if(!IsPostBack)
{
BindGrid();
}
}


private void BindGrid()
{
ds = new DataSet();
try
{
ds.ReadXml(@"c:\inetpub\wwwroot\WebApplication10\XMLFile1.xml");
DataGrid1.DataSource = ds;
DataGrid1.DataBind();
}
catch(Exception ex)
{
throw ex;
}
}




private void Button1_Click(object sender, System.EventArgs e)
{
ds = new DataSet();
try
{
ds.ReadXml(@"c:\inetpub\wwwroot\WebApplication10\XMLFile1.xml");
DataRow row = ds.Tables[0].NewRow();
row["name"]=txtName.Text;
row["fathersname"]=txtFName.Text;
row["address"]=txtAddress.Text;
ds.Tables[0].Rows.Add(row);
ds.WriteXml(@"c:\inetpub\wwwroot\WebApplication10\XMLFile1.xml");
txtAddress.Text="";
txtFName.Text="";
txtName.Text ="";
BindGrid();
}
catch(Exception ex)
{
throw ex;
}