How to copy an access database and save it using c#? -

im trying save access database file creating new database file , save anywhere user , name file.

i tried using code 'the file cannot access use process'. idea?

private void btnselectdatabase_click(object sender, eventargs e)     {         ofdmain.showdialog();         lbldatabase.text = ofdmain.filename;     }      private void btnloaddatabase_click(object sender, eventargs e)     {         try         {             test = new oledbconnection(@"provider=microsoft.ace.oledb.12.0;             data source=" + lbldatabase.text);             test.open();             refresh();         }          catch (exception ex)         {             messagebox.show(ex.message);         }     }      private void btnsave_click_1(object sender, eventargs e)     {         sfdmain.showdialog();     }      private void sfdmain_fileok(object sender, canceleventargs e)     {          streamreader read = new streamreader(lbldatabase.text);         stream s = file.open(sfdmain.filename, filemode.createnew);         streamwriter writer = new streamwriter(s);         writer.close();      }