Effective file search solution in UWP

Question

Hi, I need to search for files based on their type, creation date, and size (something like in windows). What are the options for an efficient search?

I tried to use the Storage API, but the search is quite slow, in turn, System.IO can access folders to which the user does not have permission, so often the search is interrupted by “Access denied” (for example, System.IO can access “C:\System Volume Information”, which is not desirable, since the user does not have access to such system files).

Answer 1

see Directory.EnumerateFiles. It has ignore no access files:

var folder = @"c:\code";
var match = "*.cs";
var maxSize = 100;
var filePaths = Directory.EnumerateFiles(folder, match, new EnumerationOptions
{
    IgnoreInaccessible = true,
    RecurseSubdirectories = true
}).Where(f =>
{
    var fileInfo = new FileInfo(f);
    return fileInfo.Length < maxSize;
});

https://learn.microsoft.com/en-us/dotnet/api/system.io.directory.enumeratefiles?view=net-8.0

note: the windows file system is just not fast at searching for files.