Delphis Web Broker Technology

The CGI and ISAPI code snippets I've shown you so far demonstrate the plain, direct approach to the protocol and API. Extending these examples at that level is certainly possible, but what is interesting in Delphi is to use the WebBroker technology. This comprises a class hierarchy within VCL and CLX, built to simplify server-side development on the Web, and a specific type of data modules, called WebModules. Both the Enterprise and Professional editions of Delphi 5 include this framework...

Using Lookup Controls

Dblookupcombobox

If the list of values is extracted from another dataset, then instead of the DBListBox and DBComboBox controls you should use the specific DBLookupListBox or DBLookupCombo-Box components. These components are used every time you want to select for a field a record of another dataset. For example, if you build a standard form for taking orders, the orders dataset will generally have a field hosting a number indicating the customer who made the order. Working directly with the customer number is...