Support Form Data on POST/PUT and PATCH methods

[StuartFerguson]

HttpRequestMessage httpRequest = new HttpRequestMessage(HttpMethod.Post, requestUri);
MultipartFormDataContent formData = new MultipartFormDataContent();

ByteArrayContent fileContent = new ByteArrayContent(fileData);
fileContent.Headers.ContentType = MediaTypeHeaderValue.Parse("multipart/form-data");
formData.Add(fileContent, "file", fileName);
formData.Add(new StringContent(uploadFileRequest.EstateId.ToString()), "request.EstateId");
formData.Add(new StringContent(uploadFileRequest.MerchantId.ToString()), "request.MerchantId");
formData.Add(new StringContent(uploadFileRequest.FileProfileId.ToString()), "request.FileProfileId");
formData.Add(new StringContent(uploadFileRequest.UserId.ToString()), "request.UserId");
formData.Add(new StringContent(uploadFileRequest.UploadDateTime.ToString("yyyy-MM-dd HH:mm:ss")),
"request.UploadDateTime");

httpRequest.Content = formData;

Dont think this is needed for the delete method