private void tweetLoad()
 {
     if (tokens != null)
     {
         tweet = new List <TweetClass.TweetInfo>();
         //var data = new Tweets();
         try
         {
             tweet = data.tweetload();
             listView.ItemsSource = tweet;
         }
         catch (Exception ex)
         {
             //viewTextBox.AppendText(ex.Message);
         }
     }
 }