New Post: User.GetUserFromId

1. Is the code to return the providerUserID functioning correctly? (Does it return a valid ID everytime?)
   
2. You could also try Convert.ToInt64() instead of long.Parse() - I believe they both return the same though so It may not matter.
   
3. The only reason I can think of what with what I've seen of your code is when you refresh the page the variable providerUserID is being unset on refresh.
   

var userID = Convert.ToInt64(providerUserID);
                
var user = User.GetUserFromId(userID);

if (user != null)
      {
           return user.ProfileImageUrl;
      }