The Error Message is The server threw an exception. (Exception from HRESULT: 0x80010105 (RPC_E_SERVERFAULT))

Below is my code

private DataTable myDt;
    private SvrConn.DBConnection MyConn = new SvrConn.DBConnection(); 
    private SAPBAPIControlLib.SAPBAPIControl MySAP = new SAPBAPIControlLib.SAPBAPIControl();
    SAPLogonControlClass sapLogon;
    SAPBAPIControlClass sapBapi;
    SAPLogonCtrl.Connection sapConnection;
    SQLFunctionCall SQLFunc = new SQLFunctionCall();

private bool ConnectSAP()
 {
     SvrConn.SAPConnection SAPSvrCon = new SvrConn.SAPConnection();

     sapLogon = new SAPLogonControlClass();
     sapBapi = new SAPBAPIControlClass();

     string ApplicationServer = SAPSvrCon.ApplicationServer(false);
     string System = SAPSvrCon.System(false);
     string SystemNumber = SAPSvrCon.SystemNumber(false);
     string Client = SAPSvrCon.Client(false);
     string User = SAPSvrCon.User(false);
     string Password = SAPSvrCon.Password(false);
     string Language = SAPSvrCon.Language(false);

     sapLogon.ApplicationServer = ApplicationServer;
     sapLogon.Client = Client;
     sapLogon.System = System;
     sapLogon.Language = Language;
     sapLogon.User = User;
     sapLogon.Password = Password;
     sapLogon.SystemNumber = 00;
     sapConnection = (SAPLogonCtrl.Connection)sapLogon.NewConnection();
     return sapConnection.Logon(0, true);
 }
    //object sender, ServerValidateEventArgs args

 private void ISValidSubcode()
 {
     if (ConnectSAP())
     {
         sapBapi = new SAPBAPIControlClass();
         sapBapi.Connection = sapConnection;
         Object oBAPICtrl = sapBapi.GetSAPObject("BAPI_PROJECT_GETINFO","","","","","","","","","","");
         string Result = oBAPICtrl.ToString();
         
     }
     else
     {
          ScriptManager.RegisterStartupScript(this, this.GetType(), "msg", "alert('Error in Connection');", true);
         return;
     }
     
   
 }

Can anyone help me to find out my problem.
I'm very urgent of this issue.

Thanks a billion....