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Editorial Team
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Asked: 2026-05-18T21:23:25+00:00

I am trying to copy files from one directory to another and test based

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I am trying to copy files from one directory to another and test based upon the file creation date.

File.Copy(fileName, directory + fileNameOnly, true);

The problem occurs later in my program when I checked the creation date to ensure it is no more than 5 days old.

FileInfo file = new FileInfo(fileName);
if (file.CreationTime.AddHours(120) < DateTime.Now) {}

I have seen that the creation date when copied back is set to 1980-01-01. This is not useful for my requirements as I would like maintain the creation date from the original file. Is there another method of comparing the dates or is it the copy that loses the creation date value.

I guess my question is, how can I maintain the Creation Date?

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1 Answer

  1. Editorial Team

    Use the File.SetCreationTime method after you copy the file.
    You can get the source file’s creation time with File.GetCreationTime

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