c# - Get Date From Filename Using ParseExact -

i trying find file has highest date in single directory. problem dates attached filenames. using following code try pull max date running trouble parseexact.

//gather of files in local directory var files = directory.enumeratefiles(r.getleadlocalfile()); returndatetime = files.max(f => datetime.parseexact(f, "mmddyyxxxx.csv", cultureinfo.invariantculture)); 

i continue following error:

string not recognized valid datetime. 

i can tell value of file path being passed in because value of 'f' below:

\\\\vamarnas02\\users\\meggleston\\user files\\leads\\110716enh9.csv 

the value of enh9 can change depending on file.

how can datetime filename?

you need split out date text before parsing. following code snippet should help.

assume variable f filename.

datetime.parseexact(f.substring( f.lastindexof("\\") + 1,  6), "mmddyy", cultureinfo.invariantculture);