aster File.Exists / FileInfo.Exists / Directory.Exists

privatestaticboolVerifyFileExists(Uri uri, inttimeout)
{
    vartask = newTask<bool>(() =>
    {
        varfi = newFileInfo(uri.LocalPath);
        returnfi.Exists;
    });
    task.Start();
    returntask.Wait(timeout) && task.Result;
}
source: http://www.jonathanantoine.com/2011/08/18/faster-file-exists/
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