gridview bind

 SqlConnection con = new SqlConnection("Data Source=ANKITA-USER18\\SQL2008R2;Integrated Security=True;Initial Catalog=hrdemo") ;
    SqlDataAdapter da = new SqlDataAdapter("select * from emp", con);
    DataSet ds = new DataSet();
    da.Fill(ds);
    GridView1.DataSource = ds;
    GridView1.DataBind();