>"When using the question mark wildcard character, this method returns only files that match the specified file extension. For example, given two files in a directory, "file1.txt" and "file1.txtother", a search pattern of "file?.txt" returns only the first file, while a search pattern of "file*.txt" returns both files".
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>So if you know the length of rhe filename you could use the "?????.crp" format. If not (which is likely) I guess it's down to performing an additional filter on the results yourself. Either regex or String.EndsWith().......

Thanks