Path strings too long

Asked May 12 '16 at 08:38

Active May 12 '16 at 12:08

Viewed 27 times

I have some path string which are too long to handle via FileInfo. So I am prepending the pathstring with @"\?\" because I read (for example in one the answers (unfortunately linkonly) in How can I use FileInfo class, avoiding PathTooLongException? that this string would help with large pathnames (by forcing .NET to use Unicode mode which has a much higher limit than 260 or so)

But as soon as I use the whole string with the "long string"-identifier with the FileInfo class I get an error saying "Illegal char in path".

Am I missing something on how I can use this workaround?

Specific example:

fileInformations.FileLastChanged = File.GetLastWriteTime(_path); 
//this line causes the error.

edited May 23 '17 at 12:16

Community

asked May 12 '16 at 08:38

Snickbrack

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Perhaps you can show the code that generates the error? That will help a lot. – Ian May 12 '16 at 08:41
See also [DirectoryInfo, FileInfo and very long path](http://stackoverflow.com/questions/1394012/directoryinfo-fileinfo-and-very-long-path) – stuartd May 12 '16 at 08:43
Isn't it \\?\ instead of \?\ ? – Master117 May 12 '16 at 08:45
@Master117 in my case it is @"\?\" – Snickbrack May 12 '16 at 08:46

Path strings too long

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