Posting Image directly in Twitter using Status with Media in C#

I got this task. And after searching a lot, i acheived this.

I was using TweetSharp api in my application.So i tried to achieve with that.
It gives you solution so that you can achieve that by Twitpic Api.

Then I read POST statuses/update_with_media

Tried a lot, not able to do with the C# twitter api’s too like TweetSharp, Hommock etc..
Then Here is the solution 🙂

Step 1: Make Oauth Authorization Header

Simple, Download OAuth.Manager dll from here

Add Reference in your project. And add namespace (Using OAuth;) in your page.

Note : I am assuming here you have made the request to the user before and have configuration key, configuration secret, access token and access secret. You can do it by any C# api.

Step 2: Using this dll and generating header

Setting request Values :

var oauth = new OAuth.Manager();
oauth["consumer_key"] = ~Your application's Key~;
oauth["consumer_secret"] = ~Your application's Secret~;
oauth["token"] = ~Access token~;
oauth["token_secret"] = ~Access secret~;

Making Request :

var url = "";
var authzHeader = oauth.GenerateAuthzHeader(url, "POST");
var request = (HttpWebRequest)WebRequest.Create(url);

request.Method = "POST";
request.PreAuthenticate = true;
request.AllowWriteStreamBuffering = true;
request.Headers.Add("Authorization", authzHeader);

Step 3: Adding image to OAuth request and Posting

Here is the message to be uploaded sent as status
string message = "Hello Image Demo";

Here is the image
string imageFile = HttpContext.Current.Server.MapPath("/Images/abc.png"); //Sample image

if (imageFile != null)
string boundary = “~~~~~~” +
Guid.NewGuid().ToString().Substring(18).Replace(“-“, “”) +

var separator = “–” + boundary;
var footer = “\r\n” + separator + “–\r\n”;
string shortFileName = Path.GetFileName(imageFile);
string fileContentType = “image/png”;
string fileHeader = string.Format(“Content-Disposition: file; ” +
“name=\”media\”; filename=\”{0}\””,
var encoding = System.Text.Encoding.GetEncoding(“iso-8859-1”);

var contents = new System.Text.StringBuilder();
contents.AppendLine(“Content-Disposition: form-data; name=\”status\””);
contents.AppendLine(string.Format(“Content-Type: {0}”, fileContentType));

// actually send the request
request.ServicePoint.Expect100Continue = false;
request.ContentType = “multipart/form-data; boundary=” + boundary;

using (var s = request.GetRequestStream())
byte[] bytes = encoding.GetBytes(contents.ToString());
s.Write(bytes, 0, bytes.Length);
bytes = File.ReadAllBytes(imageFile);
s.Write(bytes, 0, bytes.Length);
bytes = encoding.GetBytes(footer);
s.Write(bytes, 0, bytes.Length);

Now Request Made Getting response

using (var response = (HttpWebResponse)request.GetResponse())
if (response.StatusCode == HttpStatusCode.OK)
//Posting Successfull

All Done. Image Posted Successfully 🙂


20 thoughts on “Posting Image directly in Twitter using Status with Media in C#

  1. gokoulane May 2, 2012 / 5:40 pm

    very useful post . was doing some twitter integration with windows phone app and was searching solution for this prob . luckily found yours . thx abhinav

  2. Gokoulane Ravi May 3, 2012 / 9:51 am

    OAuth.Manager doesnt support wp7 . any alternative pls?

  3. abhinavpratap May 9, 2012 / 8:23 pm

    thnx ravi.. me also searched a lot to get oauth.manager dll :).. don’t know any alternative for wp7.. but in my case it worked well.

  4. suresh August 2, 2012 / 10:46 am

    byte[] bytes = encoding.GetBytes(contents.ToString());
    “encoding” namespace?
    Please reply fast

  5. suresh August 2, 2012 / 12:16 pm

    I am getting 500 internal server error.I used as the same code

    • Joe August 23, 2012 / 10:33 pm

      Hey suresh, I’m getting 500 error too. Did you fix it? Thanks. J

  6. vishal katoch August 16, 2012 / 4:28 pm

    After getting the accesstoken and accesstokensecreate key but still get the 401 unauthorizes exception.

  7. J August 24, 2012 / 12:43 am

    I am getting the 500 internal server error code too. What am I doing wrong? Thanks.

  8. J August 24, 2012 / 1:27 pm

    Here’s what my contents looks like:

    Content-Disposition: form-data; name=”status”

    Hello Image Demo
    Content-Disposition: file; name=”media”; filename=”template.png”
    Content-Type: image/png

  9. J August 24, 2012 / 2:05 pm

    Ok, I think it’s solved. Why…I’m not sure but it works if you use this code:

    Scroll all the way to the bottom and get the code. You don’t have to create the class if you don’t want, you can just make variables. Anyway, it works now, pretty much the same it looks like as the above code but there must be something different.

  10. varshapatil2187 October 19, 2012 / 12:36 pm

    if i post large byte image, then operation timeout error occur,

  11. Rick July 4, 2013 / 6:07 am

    Can anyone tell me if this still works with the new changes to Twitter recently? Thanks

    • John August 7, 2013 / 7:05 pm


  12. walker August 16, 2013 / 1:22 pm

    Very useful post.

  13. Gaurav Dhol September 25, 2013 / 5:26 am

    It is not working with API 1.1 can you please send code for API 1.1

  14. Fotocum December 31, 2013 / 6:16 pm

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    Portraiture . Spend photographing pets. Shelters for animals ( dogs, cats ) in the presence of free time, ready to hold a free photo shoot
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    For guests of St. Petersburg – photographer ready to spend during your visit to the city on the Neva ! Knowing the city help to schedule a visit interesting places
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    As the picture for me is not just a job , and favorite pastime – I can always conduct a free photography if I liked your idea or event, under TFP.

  15. vignesh August 28, 2014 / 9:42 am

    using (var response = (HttpWebResponse)request.GetResponse())
    if (response.StatusCode == HttpStatusCode.OK)
    //Posting Successfull

    i got error 401.

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