1   public void ConSAP()
 2         {
 3 
 4             //实例化一个SAPControl类的实例。
 5             SAPLogonCtrl.SAPLogonControlClass Login = new SAPLogonCtrl.SAPLogonControlClass();    //这一句报错了，
 6             //指定连接SAP的各项参数。
 7             Login.User = this.txtUser.Text.Trim();
 8             Login.Password = this.txtUserPwd.Text.Trim();
 9             Login.Client = this.txtClient.Text.Trim();
10             Login.Language = this.cmbLanguage.Text.Trim().ToUpper();
11             Login.ApplicationServer = this.txtIP.Text.Trim();
12             Login.SystemNumber = Convert.ToInt32(this.txtSysNum.Text.Trim());
13 
14             //New一个连接对象去连接SAP
15             SAPLogonCtrl.Connection Conn = (SAPLogonCtrl.Connection)Login.NewConnection();
16 
17 
18             //执行Logon方法检测是否能够登录到SAP，返回类型为Bool.
19             if (Conn.Logon(0, true))
20             { 
21                 MessageBox.Show("该配置可以成功连接到SAP！", "恭喜", MessageBoxButtons.OK, MessageBoxIcon.Asterisk, MessageBoxDefaultButton.Button1);
22 
23             }
24             else
25             {
26                 MessageBox.Show("该配置无法连接到SAP。","警告",MessageBoxButtons.OK,MessageBoxIcon.Exclamation,MessageBoxDefaultButton.Button1);
27             }
28         }