public UserPage(Model.User user) { InitializeComponent(); Local(); _user = user; UserName.Text = string.Format("{0} {1}", _user.Surname, _user.Name); _surveys = surveyController.GetByUserId(_user.Id); UpdateSurveysTable(); if (_surveys.Count > 0) { GoToTest.Visibility = Visibility.Visible; } else { GoToTest.Visibility = Visibility.Collapsed; } string bestSurvey = surveyController.GetTheBestSurveyOfUser(_user.Id); if (!string.IsNullOrEmpty(bestSurvey)) { LabelBestSurvey.Content = bestSurvey; } }