using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("id");
        dt.Columns.Add("nome");

        DataRow dr = null;

        dr = dt.NewRow();
        dr["id"] = "1";
        dr["nome"] = "ze";
        dt.Rows.Add(dr);



        dr = dt.NewRow();
        dr["id"] = "2";
        dr["nome"] = "zeze";
        dt.Rows.Add(dr);



        dr = dt.NewRow();

        dr["id"] = "3";
        dr["nome"] = "zedicamar";
        dt.Rows.Add(dr);

​

        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}