private void btnExecuteSR_Click(object sender, EventArgs e)
    {
        try
        {
            NAEmployeeExtractClient client = new NAEmployeeExtractClient();
            EmpExtract oEmpExtract = new EmpExtract();
            DATA_DSNA_EMPLOYEE_DATA[] arrEmployee = null;

            client.ClientCredentials.UserName.UserName = "user";
            client.ClientCredentials.UserName.Password = "password";

            oEmpExtract.LegalEmployer = "PARAM";
            arrEmployee = client.process(oEmpExtract);

            MessageBox.Show("Success!!", "Message", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message, "Message", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
        }
    }