Holds filename of uploaded part, if auto parsed.

A String value.  

object.Filename [= value]

The Filename Property syntax has these parts:

By default, this property will contain filename of the Request posted by the user. However, if AutoParse property was set to True, you can specify different filename for each uploaded file. You should do so from within UploadFilename event. That way you can deliver uploads directly to their destination files, during client's upload.