本人对于类的东西没怎么看懂，望高手教我。我试了一下，似乎类名book必须与下面的public Book(string newtitle,string newisbn)相同，这样后面的Book dx1 = new Book("cet-6词汇", "00-21-45698-3");才有效，这是什么原因呢？
public class Book
{   //申明变量
    private string title;
    private string isbn;
    private double price;
    //构造函数逻辑
    public Book(string newtitle,string newisbn)
    {
     title=newtitle;
     isbn=newisbn;
    }
       public string TitleInfo
    {
     get
       {
           return "书名是:" + title + "<br>标签号是：" + isbn ;
     
     
       }
    }
    public string Title
    {
        get
        {
            return title;

        }

    }
    public double Price
    {
        get
        {
            return price;

        }
        set
        {
            price = value;
        }
   
    }




}

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Book dx1 = new Book("cet-6词汇", "00-21-45698-3");
        dx1.Price = 18.00;
        Response.Write(dx1.TitleInfo);
        Response.Write("<br>价格是：" + dx1.Price );
    }
}