OpenTween.TwitVideo.Upload C# (CSharp) Method

        public HttpStatusCode Upload( FileInfo mediaFile, string message, string keyword, string username, string twitter_id, ref string content )
        {
            // Message必須
            if ( string.IsNullOrEmpty( message ) )
                throw new ArgumentException( "'Message' is required." );

            // Check filetype and size
            if ( Array.IndexOf( multimediaExt, mediaFile.Extension.ToLower() ) > -1 )
            {
                if ( mediaFile.Length > TwitVideo.MaxMultiMediaFileSize )
                    throw new ArgumentException( "File is too large." );
            }
            else if ( Array.IndexOf( pictureExt, mediaFile.Extension.ToLower() ) > -1 )
            {
                if ( mediaFile.Length > TwitVideo.MaxPictureFileSize )
                    throw new ArgumentException( "File is too large." );
            }
            else
            {
                throw new ArgumentException( "Service don't support this filetype." );
            }

            // Endpoint(URI+Token)
            const string URLBASE = "http://api.twitvideo.jp/oauth/upload/";
            byte[] data = Encoding.ASCII.GetBytes( ApplicationSettings.TwitVideoConsumerKey.Substring(0, 9) + username );

            byte[] bHash;
            using (MD5CryptoServiceProvider md5provider = new MD5CryptoServiceProvider())
            {
                bHash = md5provider.ComputeHash( data );
            }

            string url = URLBASE + BitConverter.ToString( bHash ).ToLower().Replace( "-", "" );
            // Parameters
            Dictionary< string, string > param = new Dictionary< string, string >();
            param.Add( "username", username );
            if ( !string.IsNullOrEmpty( twitter_id ) )
                param.Add( "twitter_id", twitter_id );
            if ( !string.IsNullOrEmpty( keyword ) )
                param.Add( "keyword", keyword );
            param.Add( "type", "xml" );
            param.Add( "message", message );
            List< KeyValuePair< string, FileInfo > > binary = new List< KeyValuePair< string, FileInfo > >();
            binary.Add( new KeyValuePair< string, FileInfo >( "media", mediaFile ) );
            this.InstanceTimeout = 60000; // タイムアウト60秒

            HttpWebRequest req = this.CreateRequest( HttpConnection.PostMethod, new Uri( url ), param, binary, false );
            return this.GetResponse( req, out content, null, false );
        }