/// <summary>
/// Create new attachment
/// </summary>
/// <param name="attachment">The attachment to be created</param>
/// <param name="type">The type of the new attachment. Possible values are TeamPulse, FeedbackPortal. If not set TeamPulse is used</param>
/// <returns>The created attachment</returns>
public Attachment Create(int workItemId, AttachmentFileInfo file, string type = "TeamPulse")
{
string apiUrl = string.Format(ApiUrls.Attachments.Post, workItemId);
string apiUrlQueryArgs = string.Format("{0}?type={1}", apiUrl, type);
string postUrl = this.apiClient.CreateUrl(apiUrlQueryArgs);
string responseContent = this.PostFile(postUrl, file);
var attachment = SerializationHelper.DeserializeFromJson<Attachment>(responseContent);
return attachment;
}
private string PostFile(string postUrl, AttachmentFileInfo file)
{
string formDataBoundary = String.Format("----------{0}", Guid.NewGuid());
byte[] formData = GetMultipartFormData(formDataBoundary, file);
HttpWebRequest request = WebRequest.Create(postUrl) as HttpWebRequest;
request.Method = "POST";
request.ContentType = "multipart/form-data; boundary=" + formDataBoundary; ;
request.ContentLength = formData.Length;
request.Headers.Add("Authorization", "WRAP access_token=" + this.apiClient.GetAccessToken());
request.Accept = "application/json";
// Send the form data to the request.
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(formData, 0, formData.Length);
requestStream.Close();
}
StreamReader sr = new StreamReader(request.GetResponse().GetResponseStream());
string responseContent = sr.ReadToEnd();
return responseContent;
}
private static byte[] GetMultipartFormData(string boundary, AttachmentFileInfo attFile)
{
Stream formDataStream = new System.IO.MemoryStream();
//formDataStream.Write(Encoding.UTF8.GetBytes("\r\n"), 0, encoding.GetByteCount("\r\n"));
// Add just the first part of this param, since we will write the file data directly to the Stream
StringBuilder header = new StringBuilder();
header.AppendLine("--" + boundary);
header.AppendFormat("Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"", "files", attFile.Name).AppendLine();
header.AppendFormat("Content-Type: {0}", attFile.ContentType).AppendLine();
header.AppendLine();
string headerString = header.ToString();
formDataStream.Write(Encoding.UTF8.GetBytes(headerString), 0, Encoding.UTF8.GetByteCount(headerString));
// Write the file data directly to the Stream, rather than serializing it to a string.
formDataStream.Write(attFile.Data, 0, attFile.Data.Length);
// Add the end of the request. Start with a newline
string footer = "\r\n--" + boundary + "--\r\n";
formDataStream.Write(Encoding.UTF8.GetBytes(footer), 0, Encoding.UTF8.GetByteCount(footer));
// Dump the Stream into a byte[]
formDataStream.Position = 0;
byte[] formData = new byte[formDataStream.Length];
formDataStream.Read(formData, 0, formData.Length);
formDataStream.Close();
return formData;
}