i generated it all by myself.
protected void GridView2_SelectedIndexChanged(object sender, EventArgs e)
{
TextBox19.Text = GridView2.SelectedRow.Cells[1].Text;
TextBox20.Text = GridView2.SelectedRow.Cells[2].Text;
}
protected void Button1_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection ("Data Source = MICKEY\\SQLEXPRESS; Initial catalog = rr; User Id = k; Password = mickey; integrated security = True");
SqlCommand cmd = new SqlCommand("select customername , customeridno from customerMaster");
SqlDataAdapter da = new SqlDataAdapter(cmd.CommandText, con);
DataSet ds = new DataSet();
da.Fill(ds);
GridView2.DataSource = ds;
GridView2.DataBind();
}
}