I am using following LINQ queries to fetch screenname/userid of an authenticated user:

Here I am using a valid TwitterContext-
var queryResponse =
                        from tweet in twitterCtx.User
                        where tweet.Type == UserType.Show && tweet.ScreenName == twitterCtx.AuthorizedClient.ScreenName
                        select tweet;

var queryResponse =
                        from tweet in twitterCtx.User
                        where tweet.Type == UserType.Show && tweet.ScreenName == twitterCtx.AuthorizedClient.UserId
                        select tweet;

Here I am using valid Auth object-

var queryResponse =
                        from tweet in twitterCtx.User
                        where tweet.Type == UserType.Show && tweet.ScreenName == Auth.ScreenName
                        select tweet;

var queryResponse =
                        from tweet in twitterCtx.User
                        where tweet.Type == UserType.Show && tweet.ScreenName == Auth.UserId
                        select tweet;
In all the cases I am getting Null for both screenname and userid. Kindly advice.

Hi,

The Authorizer's ScreenName and UserID are only populated when the user does a full OAuth login. So, if you load the authorizer with credentials that were obtained from a previous authorization, ScreenName and UserID aren't loaded either. Here are a couple options:

1. Query VerifyCredentials and examine the Account.User.Identifier that's returned.
2. If you already know who the user is, save their ScreenName and UserID when they do OAuth authentication and retrieve the values when you need to perform a query.

@JoeMayo