How to show data from xml into gridview?

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ASP.NET

hi,
I am having an issue i have a Customers.xml file in which there is details of customer including userid and password.
Now i want to show only those data of which userid and password matched from xml file. Now i am able to find data if it is there in xml but when i am biding it to gridview it is showing complete xml data which i dont want. So how to do that?
Below is my button code:

protected void Button1_Click(object sender, EventArgs e)
{
    System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
    doc.Load(Server.MapPath("~/Customers.xml"));
    System.Xml.XmlNode usernameNode = doc.SelectSingleNode("/Customers/Customer/CustomerID");
    string username = usernameNode.InnerText;
    System.Xml.XmlNode passwordNode = doc.SelectSingleNode("/Customers/Customer/Password");
    string password = passwordNode.InnerText;
    if (TextBox1.Text == username && TextBox2.Text == password)
    {
        DataSet ds = new DataSet();
        ds.ReadXml(Server.MapPath("~/Customers.xml"));
        GridView1.DataSource = ds;
        GridView1.DataBind();
        Label1.Text = "User found";
    }
    else
    {
        Label1.Text = "User Not found";
    }
    
}