AJAX Library for Visual DataFlex

Visual DataFlex Studio has a library that can be used to develop AJAX web applications available from http://www.visual-dataflex.co.uk/1seater.asp?pageid=948

The goal of the Visual DataFlex AJAX library is to bring the experience from the Window version of Visual DataFlex to the web using AJAX techniques.

You probably allready now how to create a datamodel Using DataDictionaries from earlier Visual DataFlex programming experience. Now just attach you DataDictionaries Using AJAX Web Browser Objects - this brings your existing datamodel to the ajax world. ( See AJAX Rating Example for how to do that ).

Basics

• Using DataDictionaries
• How to develop ASP pages

Frequent issues

• Adding the AJAX Library to your application
• Creating a AJAX Web application
• Using AJAX Web Browser Objects
• Creating a AJAX Form
• AJAX Remote Method Invocation

Typical problems

• if you get a http 500 , then you probably forgot to copy the files from the the AppHtml dir in the AJAX library to your project .
• remember to set the correct access rights on your asp files.
• Remember to have the same version installed on the server and in the webapplication AppHtml directory

Examples

• AJAX Rating Example