AWS SDK for .NET Documentation
S3Prefix Property
AmazonAmazon.EC2.ModelExportToS3TaskTypeS3Prefix Did this page help you?   Yes   No    Tell us about it...
The key prefix used when writing the image to a single object in the bucket.
Declaration Syntax
C#
public string S3Prefix { get; set; }
Remarks
This property is used when the ExportToS3TaskType instance is used as input to the CreateInstanceExportTask operation. The resulting S3 object key will be set as 'S3Prefix + exportTaskId + ‘.’ +diskImageFormat'.

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