AWS SDK for .NET Documentation
Prefix Property
AmazonAmazon.S3.ModelListVersionsRequestPrefix Did this page help you?   Yes   No    Tell us about it...
Selects only those keys that begin with the specified prefix.
Declaration Syntax
C#
public string Prefix { get; set; }
Remarks
Prefixes can be used to separate a bucket into different groupings of keys. You can think of using prefix to make groups in the same way you'd use a folder in a file system.) You can use prefix with delimiter to roll up numerous objects into a single result under CommonPrefixes.

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