protected void GetUser_Click(object sender, EventArgs e) { Panel1.Visible = false; Panel2.Visible = false; Panel3.Visible = false; Panel4.Visible = true; UserService.IUserService client = new UserService.UserServiceClient(); DataSet ds = client.GetTeacher(Convert.ToInt32(TextBox8.Text)); if (ds.Tables[0].Rows.Count > 0) { TextBox2.Text = ds.Tables[0].Rows[0]["Name"].ToString(); TextBox3.Text = ds.Tables[0].Rows[0]["Gender"].ToString(); TextBox4.Text = ds.Tables[0].Rows[0]["DateofBirth"].ToString(); TextBox6.Text = ds.Tables[0].Rows[0]["Sub"].ToString(); } else { Label1.Text = "No teacher with this ID ,Enter valid!"; } }