How to POST attachment to JIRA using REST API?

Question

How to POST attachment to JIRA using JIRA REST API and HttpWebRequest in C#?

From the documentation under /rest/api/2/issue/{issueIdOrKey}/attachment

Answer 1

solved your problem:

var boundary = string.Format("----------{0:N}", Guid.NewGuid());
System.IO.MemoryStream content = new MemoryStream();
var writer = new StreamWriter(content);
foreach (var att in attachments)
{

    writer.WriteLine("--{0}", boundary);
    writer.WriteLine("Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"", "file", Path.GetFileName(att["filename"]));
    writer.WriteLine("Content-Type: {0}", att.ContentType);
    writer.WriteLine();
    writer.Flush();
    att.Stream.CopyTo(content);
    writer.WriteLine();
}
writer.WriteLine("--" + boundary + "--");
writer.Flush();
content.Seek(0, SeekOrigin.Begin);


HttpWebRequest oRequest = null;
oRequest = (HttpWebRequest)HttpWebRequest.Create(string.Format(RestBaseURI + "issue/{0}/attachments", item.Key));
oRequest.ContentType = string.Format("multipart/form-data; boundary={0}", boundary);
oRequest.Method = "POST";
oRequest.Headers.Add("Authorization", AuthData);
oRequest.Headers.Add("X-Atlassian-Token", "nocheck");
oRequest.UseDefaultCredentials = true;
oRequest.KeepAlive = true;
oRequest.ContentLength = content.Length;

using (var oStream = oRequest.GetRequestStream())
{
    content.CopyTo(oStream);
}

using (var oResponse = (HttpWebResponse)oRequest.GetResponse())
{
    using (var reader = new StreamReader(oResponse.GetResponseStream()))
    {
        var responseData = reader.ReadToEnd();
        var data = JObject.Parse(responseData);
    }
}

PS: thanks2mod to delete my previous post! nice ...