You can write code to create an instance of the Web DataWindow server component, and you can call its methods to create a Web DataWindow application.
For information on the types of Web DataWindow server components, see “The Web DataWindow server component and client control”.
Two sets of methods are available on the generic Web DataWindow server component:
Methods that are available for other DataWindow controls
Methods used to configure the component and generate HTML
DataWindow control methods supported by the generic server component include sorting, filtering, validation, and get and set methods. When you call one of these methods on the server component, the server reloads the page in the browser.
Methods with more than one syntax have a different form for each syntax to overcome restrictions on the use of overloading. For example, the ClearValues method takes a string as an argument and the ClearValuesByColNum method takes a number.
For a complete list of supported DataWindow control methods, see the DataWindow Reference or the online Help.
Examining server component methods
You can view the generic EAServer component
methods on the Components page of the System Tree or in EAServer Manager.
Other methods are available to set up the component, retrieve data, establish persistent values needed by your Web page, and generate HTML.
If you use a custom server component, there are additional configuration tasks. For more information, see “Using a custom server component”.
Mixed case method names
The methods of the generic EAServer server
component use mixed case names and all the examples in this section
use mixed case. If you write your own server component, the methods
of the component you generate are all lowercase. (You can use the
sample PBDWRMT.PBL as a starting point if you want
the methods described here.)
In your server-side script, you will code these tasks:
Instantiate the component.
Load the DataWindow object.
Control what HTML is generated (for example, by specifying what functionality to include and what browser to target).
Specify the database connection and retrieve data.
Pass page-specific data to the reloaded page.
Pass user action information to the server component.
Insert the generated HTML in the page template.
Sample code for some of these tasks follows. For detailed information about the methods used in the examples, see the DataWindow Reference or the online Help.
