Access denied with DI and C#

Question

Hello,
   I can connect with VB.NET, but I cant do it with C#.
I was traslated the sintax of same code in each language, but doens't work.
Also, I was include one VB project into my .NET solution, but the same function that work at VB.NET solution, called from my project C# doesn't work.
¿any idea?, thanks
the code C#:
          private SAPbobsCOM.Company ConnectDataBase(string dbName)
               try
                    Company vCompany ;
                    int lRetCode;
                    int lErrCode;
                    string sErrMsg;
                    vCompany = new SAPbobsCOM.Company();
                    vCompany.Server = "(local)";
                    vCompany.CompanyDB = dbName;
                    vCompany.UserName = "manager";
                    vCompany.DbUserName = "sa";
                    vCompany.DbPassword = "";
                    vCompany.Password = "manager";
                    vCompany.language = SAPbobsCOM.BoSuppLangs.ln_Spanish;
                    vCompany.UseTrusted = false;
                    lRetCode = vCompany.Connect();
                    lRetCode = vCompany.Connect();
                    if(lRetCode != 0)
                         vCompany.GetLastError(out lErrCode, out sErrMsg);
                    return vCompany;
               catch(Exception ex)
                    string mess = ex.Message ;
                    return null;
the code VB:
    Public Function ConnectDataBase(ByVal dbName As String) As SAPbobsCOM.Company
        Dim vCompany As SAPbobsCOM.Company
        Dim lRetCode, lErrCode As Long
        Dim sErrMsg As String
        Dim strCookie As String
        Dim strConnectionContext As String
        Try
            vCompany = New SAPbobsCOM.Company
            vCompany.Server = "(local)"
            vCompany.CompanyDB = dbName
            vCompany.UserName = "manager"
            vCompany.DbUserName = "sa"
            vCompany.DbPassword = ""
            vCompany.Password = "manager"
            vCompany.language = SAPbobsCOM.BoSuppLangs.ln_Spanish
            vCompany.UseTrusted = False
            lRetCode = vCompany.Connect
            If lRetCode <> 0 Then
                vCompany.GetLastError(lErrCode, sErrMsg)
            End If
            Return vCompany
        Catch ex As Exception
            Return Nothing
        End Try
    End Function
thanks.

Answer 1

I also program in C#, this is my code, works like a charm...
<b>Code (C#)</b>
SboGuiApi = new SAPbouiCOM.SboGuiApiClass();
ConnectionString = Environment.GetCommandLineArgs().GetValue(1).ToString();
SboGuiApi.Connect(ConnectionString);
SAPbouiCOM.Application SBO_Application = SboGuiApi.GetApplication(0);