ColaborativeFiltering() public method

public ColaborativeFiltering ( int ID ) : List
ID int
return List
 private void UserQuestionRecommendation()
 {
     DataList questionsList = (DataList)this.Master.FindControl("questionsList");
     RecommendationService recommendation = new RecommendationService();
     questionsList.DataSource = recommendation.ColaborativeFiltering(Convert.ToInt32(User.Identity.Name));
     questionsList.DataBind();
 }