C# Error
CS2021 – File name ‘{0}’ is empty, contains invalid characters, has a drive specification without an absolute path, or is too long
Reason for the Error & Solution
File name ‘file’ is too long or invalid
All file names passed to the C# compiler must be no longer than _MAX_PATH (defined in a Windows header file). The compiler will give this error in the following situations:
-
A file name (including the path) is longer than
_MAX_PATH. -
The file name contains invalid characters.
-
The file name contains wildcards where wildcards are not allowed (such as in resource file names).
