protected void btnMultiply_Click(object sender, EventArgs e) { CalculatorService.CalculatorWebServiceSoapClient client = new CalculatorService.CalculatorWebServiceSoapClient(); int result = client.Multiply(Convert.ToInt32(txtFirstNumber.Text), Convert.ToInt32(txtSecondNumber.Text)); lblResult.Text = result.ToString(); gvCalculations.DataSource = client.GetCalculations(); gvCalculations.DataBind(); gvCalculations.HeaderRow.Cells[0].Text = "Recent Calculations"; }