c# - Could not find a part of the path 'C:\destPath\FileName.ext' when copying directories -

so, have logic looks following:

private static void copytodestdirectory(string destdirectory, string srcdirectory) {     if (!directory.exists(destdirectory))     {         directory.createdirectory(destdirectory);     }     foreach (var file in directory.getfiles(srcdirectory))     {         var filename = path.getfilename(file);         var destpath = path.combine(destdirectory, filename);         file.copy(file, destpath, true);     }      ... } 

usually works, every once in while not. times not work, have log file resembles following:

2016-12-22 15:49:21,670 [11] error: system.io.directorynotfoundexception: not find part of path 'c:\destpath\filename.ext'.    @ system.io.__error.winioerror(int32 errorcode, string maybefullpath)    @ system.io.file.internalcopy(string sourcefilename, string destfilename, boolean overwrite, boolean checkhost)    @ system.io.file.copy(string sourcefilename, string destfilename, boolean overwrite)    @ namespace.class.copytodestdirectory(string destdirectory, string srcdirectory)    @ namespace.class.callingmethod() 

i have no idea why i'm getting exception destination path. doesn't make sense me because make sure recreate destination directory before copying.

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this calling method looks like. it's notable in deletes dest directory before calling copytodestdirectory wouldn't expect problem because, , recreate directory again, , because both , copytodestdirectory synchronous, not familiar of low-level details behind system.io functions, think it's worth mentioning.

public void callingmethod() {     try     {         ...          if (directory.exists(destdirectory))         {             directory.delete(destdirectory, true);         }         string srcdirectory = getsrcdirectory();         copytodestdirectory(destdirectory, srcdirectory);          ...     }     catch (exception ex)     {         _log.error("", ex);         throw;     } } 

what might cause error this?

i had similar case powershell before create symlinks/junctions renewed content of directory.

as workaround: i´ve ended in writing loop, delete/create directory while exists/or not. wanted write log, loop case, since changes worked @ first time. strange, maybe mistake in code around, hadn´t reproduce it. maybe it´s enough call directory.exists() second time.