C#.net 连接SAP RFC

Question

连接后只认第一次的登录数据，例如，第一次登录clien ：DEV,账户：123,密码Q123456,连接成功，第二次我填账户：123，密码111(故意填错)，但是还是连接成功，反之如果我第一次连接失败，第二次账户密码都是正确的，还是连接不成功
using SAP.Middleware.Connector;

TextBox1输账户，TextBox2输密码

     RfcConfigParameters rfcPar = new RfcConfigParameters();
         rfcPar.Add(RfcConfigParameters.Name, "DEV");
         rfcPar.Add(RfcConfigParameters.AppServerHost, "sapdevapp.abcdefg.com");
         rfcPar.Add(RfcConfigParameters.Client, "810");
         rfcPar.Add(RfcConfigParameters.User, TextBox1.Text);
         rfcPar.Add(RfcConfigParameters.Password,TextBox2.Text);
         rfcPar.Add(RfcConfigParameters.SystemNumber, "01");
         rfcPar.Add(RfcConfigParameters.Language, "ZH"); 
         RfcDestination dest = RfcDestinationManager.GetDestination(rfcPar); 

RfcRepository rfcrep = dest.Repository;

RfcDestination存的还是第一次登录的用户密码，除非到IIS重新启动，否则就算关闭页面或者浏览器都无法清除。
请问怎么清空RfcDestination？我用dest = null /rfcPar = null都不行，下一次连接还是第一次登录的密码。

Answer 1

参考，题主问题和Stack Overflow这个问题一样
I resolved this issue by using RfcCustomDestination class which checks for the concurrent user names and passwords.

RfcDestination dest = RfcDestinationManager.GetDestination("SAPConnection"); 
RfcCustomDestination temp = dest.CreateCustomDestination();
temp.User = txt_user.Text; 
temp.Password = txt_password.Text;

If the password is wrong then Dest.ping throws an error.

asp.net - Connect to RFC destination using several SAP users concurrently - Stack Overflow I have a .Net application which use to create SAP sales orders through it. When I use a (common)single SAP user id to login to the rfcDestination it works perfectly. but it doesnt work with concurr... https://stackoverflow.com/questions/59714386/connect-to-rfc-destination-using-several-sap-users-concurrently