Why?

gistfile1.cs

public class SampleDataItem
    {
        public SampleDataItem(String uniqueId, String title, String subtitle, String imagePath, String description, String content)
        {
            this.UniqueId = uniqueId;
            this.Title = title;
            this.Subtitle = subtitle;
            this.Description = description;
            this.ImagePath = imagePath;
            this.Content = content;
        }

        public string UniqueId { get; private set; }
        public string Title { get; private set; }
        public string Subtitle { get; private set; }
        public string Description { get; private set; }
        public string ImagePath { get; private set; }
        public string Content { get; private set; }

        public override string ToString()
        {
            return this.Title;
        }
    }