protected void Button1_Click(object sender, EventArgs e) { Label1.Visible = true; if (DropDownList1.SelectedIndex == 0) { Label1.Text = "Select a Valid value"; } else { objBEL = new MasterBEL(); objDAL = new ClassDAL(); objBEL.city = TextBox1.Text; objBEL.state = DropDownList1.SelectedValue; Label1.Visible = true; Label1.Text = objDAL.AddCity(objBEL); GridView1.DataBind(); } }