How can I create a file extension filter?

Shell for WPF Forum

Posted 1 month ago by JP Garza
Version: 19.1.0685

I was wondering what is the best way to create a ShellTreeListBox DataFilter that filters file types/extensions. I would like to display only files that end on .sq or .txt


Comments (3)

Answer - Posted 1 month ago by JP Garza

This appears to work:

private IDataFilter _folderExplorerDataFilter = new PredicateFilter(i => 
    var shellObjectVM = (ShellObjectViewModel)i;
    var supportedFileTypes = new[] { ".sq", ".txt" };
    return (shellObjectVM.IsFolder) ? true : supportedFileTypes.Any(shellObjectVM.Name.EndsWith); 

[Modified 1 month ago]

Posted 1 month ago by Actipro Software Support - Cleveland, OH, USA

Hi JP,

Yes predicate filters would work fine for that kind of thing.

Actipro Software Support

Posted 1 month ago by JP Garza

Alright, thank you!

The latest build of this product (v21.1.3) was released 16 days ago, which was after the last post in this thread.

Add Comment

Please log in to a validated account to post comments.