How to use linqtotwitter V3

Question

Alright I recently upgraded to V3 but it broken many things

How can I fix these ?

Number 1 :

This is not working anymore no such definition as Credentials and InMemoryCredentials

var auth = new SingleUserAuthorizer
{
    Credentials = new InMemoryCredentials
    {
        ConsumerKey = srtwitterConsumerKey,
        ConsumerSecret = srtwitterConsumerSecret,
        OAuthToken = srtwitterOAuthToken,
        AccessToken = srtwitterAccessToken
        }
};

Number 2 : no definition for GetFileBytes anymore

var mediaItems =
new List<Media>
{
    new Media
    {                 
        Data = Utilities.GetFileBytes(srImageUrl),
        FileName = srTweet.Split(' ')[0]+".jpg",
        ContentType = MediaContentType.Jpeg
    }
};

Number 3 : no definition for TweetWithMedia

var tweet = twitterContext.TweetWithMedia(srTweet, false, mediaItems);

Number 4 : no definition for UpdateStatus

var tweet = twitterContext.UpdateStatus(srTweet);

Number 5 : no definition for CreateFavorite

var vrResult = twitterContext.CreateFavorite(srRetweetId);

And i can not find any example for V3

It always say twitterCtx but how do you get twitterCtx in the first place ?

score 9 · Accepted Answer · answered Mar 21 '14 at 18:34

LINQ to Twitter v3.0 is async, which means that naming conventions have changed as well as the way to call some code. Some changes were for consistency or improving cross-platform operation. It's also a Portable Class Library (PCL), which allows it to run on multiple platforms. Here's a quick rundown on some of your questions:

Try this:

    var auth = new SingleUserAuthorizer
    {
        CredentialStore = new SingleUserInMemoryCredentialStore
        {
            ConsumerKey = ConfigurationManager.AppSettings["consumerKey"],
            ConsumerSecret = ConfigurationManager.AppSettings["consumerSecret"],
            AccessToken = ConfigurationManager.AppSettings["accessToken"],
            AccessTokenSecret = ConfigurationManager.AppSettings["accessTokenSecret"]
        }
    };

The previous implementation of GetFileBytes has cross-platform issues, so I removed it. You'll have to write your own code to read the bytes of the file. Here's the old implementation:

/// <summary>
/// Reads a file into a byte array
/// </summary>
/// <param name="filePath">Full path of file to read.</param>
/// <returns>Byte array with file contents.</returns>
public static byte[] GetFileBytes(string filePath)
{
    byte[] fileBytes = null;

    using (var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read))
    using (var memStr = new MemoryStream())
    {
        byte[] buffer = new byte[4096];
        memStr.Position = 0;
        int bytesRead = 0;

        while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
        {
            memStr.Write(buffer, 0, bytesRead);
        }

        memStr.Position = 0;
        fileBytes = memStr.GetBuffer();
    }

    return fileBytes;
}

Here's one of the TweetWithMediaAsync overloads:

    Status tweet = await twitterCtx.TweetWithMediaAsync(
        status, PossiblySensitive, Latitude, Longitude,
        PlaceID, DisplayCoordinates, imageBytes);

That is now called TweetAsync:

        var tweet = await twitterCtx.TweetAsync(status);

Here's an example of CreateFavoriteAsync:

    var status = await twitterCtx.CreateFavoriteAsync(401033367283453953ul);

You have to instantiate TwitterContext - here's an example:
```
    var twitterCtx = new TwitterContext(auth);
```

For more information, you can download the source code and see working examples for multiple technologies. The sample project names have the Linq2TwitterDemos_ prefix:

https://linqtotwitter.codeplex.com/SourceControl/latest#ReadMe.txt

Every API call is documented, as well as documentation on other aspects of LINQ to Twitter:

https://linqtotwitter.codeplex.com/documentation

How to use linqtotwitter V3

1 Answers1