By default, The FilterBarPromptVisible property is exFilterBarVisible. The filter prompt feature allows you to filter the files as you type while the filter bar is visible on the bottom part of the list area. The FilterBarFor property specifies the expression that determines whether the thumbnail is included in the filter. Use the FilterBarPrompt property to specify the HTML caption being displayed in the filter bar when the filter pattern is missing. The FilterBarPromptPattern property specifies the pattern to filter the list. The FilterBarPromptType property specifies the type of filtering when the user edits the prompt in the filter bar.