public void test()

{

SAPLogonControlClass connctl = new SAPLogonControlClass();

            //下面的参数值根据实际情况赋值           
            connctl.Client = '集团号';
            connctl.Language = 'ZH';
            connctl.ApplicationServer = '服务器IP';
            connctl.SystemNumber = 00;
            connctl.User = 'SAP登录名';
            connctl.Password = 'SAP密码';

            Connection conn = (Connection)conn