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What is Query_Updater which you assign DatabaseName?
A BDE TQuery? Why don't you use TADOQuery?

Ciao
    Formentz
"Henrik Franz�n" <xhfr@wayne.se> ha scritto nel messaggio
news:3b4bf906$1_2@dnews...
> Hi!
> I have one class called DBHandler. In this class i have three ADO objects.
I
> also have a frame. There is one button in this frame. I got some strange
> exception when pressing this button.. I should call a function in my
> DBHandler called ConnectTo(AnsiString Database), and connect to a
database,
> whats the problem ??
>
> .. here is my code. :
>
> void __fastcall TForm1::Button3Click(TObject *Sender)
> {
>     DBHandler->ConnectTo("nucleusdb");
> }
>
>
> bool __fastcall TDBaseHandler::ConnectTo(AnsiString Database)
> {
>     try{
>         FDatabase = Database;
>
>         AnsiString Def("Provider=MSDASQL.1;Persist Security
Info=False;Data
> Source=");
>         AnsiString ConnectionString(Def + FDatabase);
>
>         MainConnection->ConnectionString = WideString(ConnectionString);
>         MainConnection->Open();
>         Query_Updater->DatabaseName = FDatabase;
>         Query_Updater->OpenDatabase();
>         XMLRecordHolder->Connection = MainConnection;
>         Query_XMLLoader->Connection = MainConnection;
>         return true;
>
>     }catch(Exception &E)
>     {
>         return false;
>     }
>
> }
>
>
>
> I hope someone can help me!
>
> /wr Henrik Franz�n
>
>