How can I create a file extension filter?

Shell for WPF Forum

Posted 1 month ago by JP Garza
Version: 19.1.0685
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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

Thanks

Comments (3)

Answer - Posted 1 month ago by JP Garza
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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
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Hi JP,

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


Actipro Software Support

Posted 1 month ago by JP Garza
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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.

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