Post Image with Message in Twitter Tweet in .NET Framework 4.0

Post Image with Message in Twitter Tweet in .NET Framework 4.0. Create ASP.NET web application. add default page. add below given code in code behind.

• Go to tools
• Select library package manager
• Select Package Manager console after selecting this below in package manager console select source as nugget official package source and select your project name in default project
• Execute command
• Install-Package twitterizer - Version 2.4.1

using Twitterizer;

using System.IO;

     protected void Page_Load(object sender, EventArgs e)

    {
        CheckAuthorization();
     }

    private void CheckAuthorization()
   {

        string oauth_consumer_key = "abcdefghijk";
        string oauth_consumer_secret = "1234567890w4ew4erere"; 

        if (Request["oauth_token"] == null)

        {
            OAuthTokenResponse reqToken = OAuthUtility.GetRequestToken(oauth_consumer_key, oauth_consumer_secret,     Request.Url.AbsoluteUri);
                        Response.Redirect(string.Format("http://twitter.com/oauth/authorize?oauth_token={0}", reqToken.Token) );
        }
        else
        {
            string requestToken = Request["oauth_token"].ToString();
            string pin = Request["oauth_verifier"].ToString();
            var tokens = OAuthUtility.GetAccessToken(oauth_consumer_key, oauth_consumer_secret, requestToken, pin);
            OAuthTokens accesstoken = new OAuthTokens()
            {
                AccessToken = tokens.Token,
                AccessTokenSecret = tokens.TokenSecret,
                ConsumerKey = oauth_consumer_key,
                ConsumerSecret = oauth_consumer_secret 

            };

            //~/img/th2.jpg

            byte[] photo = File.ReadAllBytes(@"C:\Users\user\Documents\Visual Studio 2012\WebSites\WebSite35\img\Koala.jpg");

            TwitterResponse<TwitterStatus> response = TwitterStatus.UpdateWithMedia(accesstoken, "img", photo);
            if (response.Result == RequestResult.Success)
            {
                Response.Write("This is YOUR PAGE");
            }
            else
            {
                Response.Write("Try some other time");
            } 

        }

    }