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Application: FileOperator.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.IO.DirectoryNotFoundException
at System.IO.__Error.WinIOError(Int32, System.String)
at System.IO.FileSystemEnumerableIterator1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].CommonInit() at System.IO.FileSystemEnumerableIterator1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]..ctor(System.String, System.String, System.String, System.IO.SearchOption, System.IO.SearchResultHandler`1<System.__Canon>, Boolean)
at System.IO.Directory.GetDirectories(System.String)
at FileOperator.Program.Main(System.String[])
Exception Info: System.Exception
at FileOperator.Program.Main(System.String[])
What can I do to solve this problem ?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(256, 32%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMT%3C/text%3E%3C/svg%3E)
The error is directory not found which means it tried to access a directory that doesn't exist. This call originated from GetDirectories which takes a directory and enumerates it. Since we can assume it will only return directories that actually exist my first thought is your call to GetDirectories inside your Main entry point does not exist and therefore fails. Most likely it is trying to read a directory that is created at some point during the app but this is a new machine and therefore it doesn't exist.
The correct approach would be to first verify the directory exists and then enumerate it.
string pathToSearch = "...";
var childDirectories = Directory.Exists(pathToSearch) ? Directory.EnumerateDirectories(pathToSearch) : Enumerable.Empty<string>();
Note that you should use the Enumerate methods and not the Get methods for performance reasons.
Most likely other code will fail as well so often it is better to create the directory if it doesn't exist.
i (!Directory.Exists(pathToSearch)
Directory.Create(pathToSearch);
Finally note that enumerating high level directories (like Windows) can result in access denied errors so you should handle security exceptions during enumeration as well.
See old threads like for example continuing on error with Directory.GetFiles