System.Net.Http.MultipartContent public class MultipartContent : HttpContent, IEnumerable<HttpContent>, IEnumerable Provides a collection of HttpContent objects that get serialized using the multipart/* content type specification. Documentation public MultipartContent() public MultipartContent(string subtype) public MultipartContent(string subtype, string boundary) public virtual void Add(HttpContent content) public IEnumerator<HttpContent> GetEnumerator()