StreamWriter Constructor (String)
Assembly: mscorlib (in mscorlib.dll)
Access is denied.
path is an empty string ("").
path contains the name of a system device (com1, com2, and so on).
path is null.
The specified path is invalid; for example, it might refer to an unmapped drive.
The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters, and file names must be less than 260 characters.
path includes an incorrect or invalid syntax for file name, directory name, or volume label syntax.
The caller does not have the required permission.