AWS SDK for .NET Documentation
ContentType Property
AmazonAmazon.S3.ModelPutObjectRequestContentType Did this page help you?   Yes   No    Tell us about it...
A standard MIME type describing the format of the object data.
Declaration Syntax
C#
public string ContentType { get; set; }
Remarks
The content type for the content being uploaded. This property defaults to "binary/octet-stream". For more information, refer to: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.17

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