DirectoryCatalog Constructor (String, String)
Assembly: System.ComponentModel.Composition (in System.ComponentModel.Composition.dll)
The specified path is invalid (for example, it is on an unmapped drive).
path or searchPattern is null.
The caller does not have the required permission.
path is a zero-length string, contains only white space, or contains one or more implementation-specific invalid characters.
searchPattern does not contain a valid pattern.
The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based computers, paths must be less than 248 characters and file names must be less than 260 characters.
Available since 4.0