Updating the Data Model

We need an identifier to uniquely identify the comic book for our users.

We assign a new function named DisplayText().

public string DisplayText
{
    get
    {
        return SeriesTitle + " #" + IssueNumber;
    }
}

We also need a function to call books' cover image. Let's do some manipulation according to our image's name.

public string CoverImageFileName
{
    get
    {
        return SeriesTitle.Replace(" ", "-").ToLower() + "-" + IssueNumber + ".jpg";
    }
}