Data serialization on WIndows Phone

Question

I'm following this tutorial and I'm stuck at the part where the TwitterAcces class (that contains the twitter token) is serialized. This is where the serialization method is called:

    void CallBackVerifiedResponse(OAuthAccessToken at, TwitterResponse response)
    {
        if (at != null)
        {
            SerializeHelper.SaveSetting<TwitterAccess>("TwitterAccess", new TwitterAccess
            {
                AccessToken = at.Token,
                AccessTokenSecret = at.TokenSecret,
                ScreenName = at.ScreenName,
                UserId = at.UserId.ToString()
            });
        }
    }

And this is my SerializeHelper.cs:

public class SerializeHelper
{
    public static void SaveSetting<T>(string fileName, T dataToSave)
    {
        using (var store = IsolatedStorageFile.GetUserStoreForApplication())
        {
            try
            {
                using (var stream = store.CreateFile(fileName))
                {
                    var serializer = new DataContractSerializer(typeof(T));
                    serializer.WriteObject(stream, dataToSave);
                }
            }
            catch (Exception e)
            {
                MessageBox.Show(e.Message);
                return;
            }
        }
    }

}

The error I'm getting is: The type or namespace name 'DataContractSerializer' could not be found (are you missing a using directive or an assembly reference?) Visual Studio can't help me resolve the problem. It suggests creating a new class. I googled around and I think the class should be inside System.Runtime.Serialization; which I am using but that doesn't solve the problem.

Answer 1

You got to add System.Runtime.Serialization.dll referenced in your project.