private void btn_getInfo_Click(object sender, EventArgs e) { if (txt_username.Text == "" || txt_password.Text == "") { MessageBox.Show("Please enter your username and password"); return; } SendMessageWebService.SendReceive ws = new SendMessageWebService.SendReceive(); string message = string.Empty; var smsLine = ws.GetSMSLines(txt_username.Text, txt_password.Text, ref message); dgv_getLineID.DataSource = smsLine; dgv_getLineID.Columns[0].HeaderText = "Line ID"; dgv_getLineID.Columns[1].HeaderText = "Line number"; dgv_getLineID.Columns[0].Width = 90; dgv_getLineID.Columns[1].Width = 135; }