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  1. WebApp Framework Access Restriction

    The WebApp Framework comes with a prepared system for building proper secure Web Applications. By default there is the session manager that generates a unique key for each session and remembers the login state of this session and there are several hooks that allow the developer to easily implement access rules on view level. Now having this all in place it is just a matter of implementing the right hooks to restrict access to parts of the application based on the login state and user rights. But ...
  2. Visual Report Writer and The Web (XII)

    In this twelfth blog about Visual Report Writer and the Web I want to take you some not really report related features that can be found at the Live Demo website (European Server, USA server). If this is the first blog you read I encourage you to read the eleven other blogs (1: The Solution, 2: Invoices Report, 3: The Cleanup, 4: The CustomerList, 5: The Orderlist, 6: The Credit and Balances Overview), 7: Inventory Stock Levels), 8: Sick Leave), 9: FileList (RDS)), 10: Four Wine Data Based Reports) ...
  3. I Cannot Connect To An ODBC Database

    I have setup a USER DSN in the ODBC Manager (Data Sources) which points to an Microsoft Access demodata database. Now I want to connect to this database with Data Access's Visual Report Writer and with Visual DataFlex Studio. In Visual Report Writer I simply cannot get past the selection of the DSN and in Visual DataFlex Studio I get a "Unable to Login to Server!" message. What is wrong? I thought DataFlex could connect to ODBC databases, isn't that true? If I use Microsoft Excel from Microsoft ...
  4. Handling Connection Error in your Application

    When using one of the database Connectivity Kits, how can you make your program display its own error message when a connection string is not correct? By default, an error is displayed and the database will pop up a login dialog for users to enter their correct user and password. Or the application may display an unhandled error. Hmm... not what you want to see when using either the login command or SQLConnect method.


    In order to have your application better handle those errors, ...
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