How can we optimize performance when using the TreeView component?
When I say optimize performance, I am referring to reducing the number of client-server trips, such as postbacks.
Does this imply that the majority of the business logic will need to be in JavaScript? What compromises need to be made in this scenario?
This discussion pertains to the ASP.net TreeView server control.
When deciding where to implement your programming logic, consider the trade-offs between speed and efficiency. Opting for a tree view control that does not rely on table layout, coupled with a javascript framework to handle click events, can improve performance. Using ashx handler files for AJAX communication can also reduce overhead compared to aspx and calling page methods. Remember to ensure that AJAX calls and responses only contain JSON or XML data, not HTML.
On the other hand, using rapid application development tools like Visual Studio and the TreeView control can facilitate quick web application development. However, there are drawbacks such as the need to handle every click/select event on the server, which can lead to issues with page life cycle processing and increased data transfer for AJAX calls (including transfer of ViewState and HTML for each AJAX event).
If you choose to stick with the TreeView control, consider the following recommendations:
- Utilize CSS Friendly Control Adapter to reduce the size of generated HTML and replace table layout with ul/li elements
- Wrap the TreeView inside an ASP.NET AJAX UpdatePanel, focusing only on the TreeView itself, and use conditional updates of the panel. Don't hesitate to use multiple updatepanels if needed
- Keep ViewState minimal to optimize performance
Managing business logic in both JavaScript and code behind can lead to increased development overhead.
Additionally, larger scripts may result in decreased client performance, posing a potential concern.
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