book.cs

在C#下

namespace ReadBooks
{
    using System;

    /// <summary>
    ///    Summary description for Book.
    /// </summary>
    public class Book
    {
		public string Text = "";
		public int PageLength =10;
		private string m_title;

		public string Title
		{
			
			get
			{
				return m_title;	
			}
			set
			{
				m_title = value;
			}
		}

		public string GetPage(int pageNumber)
		{
			int start = (pageNumber -1 ) * PageLength;
			if((start < Text.Length) && (start  >=0))
			{
				if((start + pageLength ) < Text.Length )
				{
					return Text.Substring(start, pageLength);
				}				
				else
					return Text.Substring(start, Text.Length - start);
			}
			else
				return "";
		}


        public Book()
        {
            //
            // TODO: Add Constructor Logic here
            //
        }
    }
}