Incremental Filtering

The ASPxComboBox editor enables end-users to filter list items dynamically, based upon the text typed into the editor's input box on the client side (find-as-you-type filtering). The following filter modes are available:

• None
  Filtering is not applied to list items.
• StartsWith
  The editor is filtered for list items that begin with the search string.
• Contains
  The editor is filtered for list items that contain the search string. The found search string is highlighted within items for clarity.

Delayed Filtering

You can define the time interval between the time a user starts typing within the editor's edit box, and filtering is applied. Moreover, when the ASPxComboBox editor is in incremental filtering mode, it has the capability to start filtering only after an end-user has typed a specific number of symbols in the editor's text box.

This behavior is extremely useful when the ASPxComboBox works with a large amount of data! Applying a filter each time a new symbol is typed is not sensible, due to the large size of the data set. This could affect the web site's performance. Instead, pausing the start of filter operations, allows you to provide end-users with more sensible results, and to improve the performance of your page.