AWS SDK for .NET Documentation
Delete Method (recursive)
AmazonAmazon.S3.IOS3DirectoryInfoDelete(Boolean) Did this page help you?   Yes   No    Tell us about it...
Deletes all the files in this directory as well as this directory. If recursive is set to true then all sub directories will be deleted as well.
Declaration Syntax
C#
public void Delete(
	bool recursive
)
Parameters
recursive (Boolean)
If true then sub directories will be deleted as well.
Exceptions

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)