文件路径的DateTime格式提供程序

Question

I have a file-path that's been created from DateTime stamp:

"C:\\Logs\\Tests\\2015\\Mar\\24\\13_32_09\"

Now I am trying to convert my file-path back to DateTime object.

With Regex I can easily remove "C:\\\\Logs\\\\Tests\\" , but now I am assume I need to provide implementation of IFormtProvider to convert 2015\\\\Mar\\\\24\\\\13_32_09\\ into a DateTime object, but I haven't come along any similar example of how that's usually done.

Any example, may not be particular solution to my answer, would be helpful.

Thanks

Answer 1

No, you don't need to create an IFormatProvider at all. The invariant culture is fine for this (assuming the month name is always in English). You can just use DateTime.ParseExact , passing in the appropriate custom format string (quoting the literal characters, either with apostrophes around them or backslashes before them):

var dateTime = DateTime.ParseExact(
    text,
    @"yyyy'\'MMM'\'dd'\'HH'_'mm'_'ss'\'",
    CultureInfo.InvariantCulture);

Note that this assumes the path really does use backslashes... it won't work on Unix as-is. (You might want to canonicalize the directory separators first.)

Answer 2

You can use DateTime.ParseExact like:

DateTime dt = DateTime.ParseExact("2015\\Mar\\24\\13_32_09\\", 
                                  @"yyyy\\MMM\\dd\\HH_mm_ss\\", 
                                  CultureInfo.InvariantCulture);