标签：style blog http color 使用 文件
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using
System;using
System.Collections.Generic;using
System.IO;using
System.Linq;using
System.Text;using
System.Threading.Tasks;namespace
读文件案例{ class
Program { static
void Main(string[] args) { Console.WriteLine("请输入文件名"); string
fileName = Console.ReadLine();//获得用户输入 File file = Factory.GetFileName(fileName); file.OpenFile(); Console.ReadKey(); } } /// <summary> /// 父类，等待子类实现 /// </summary> public
abstract class
File { private
string _fileName;//文件名 public
string FileName { get
{ return
_fileName; } set
{ _fileName = value; } } private
string _extension;//后缀名 public
string Extension { get
{ return
_extension; } set
{ _extension = value; } } /// <summary> /// 构造函数 /// </summary> /// <param name="fileName"></param> public
File(string
fileName) { //在本类中，用私有字段即可，不必要使用属性来保护对应的字段 this._fileName = Path.GetFileNameWithoutExtension(fileName); this._extension = Path.GetExtension(fileName); } public
abstract void
OpenFile(); } public
class TxtFile : File { /// <summary> /// 子类构造函数，调用父类构造函数为字段赋值 /// </summary> /// <param name="fileName"></param> public
TxtFile(string
fileName) : base(fileName) { } public
override void
OpenFile() { //此时就需要用属性来保护字段了 Console.WriteLine("文件名为{0}，后缀名为{1}", this.FileName, this.Extension); } } public
class AviFile : File { public
AviFile(string
fileName) : base(fileName) { } public
override void
OpenFile() { Console.WriteLine("文件名为{0}，后缀名为{1}", this.FileName, this.Extension); } } public
class Factory { public
static File GetFileName(string
fileName) { File file = null; switch
(Path.GetExtension(fileName).ToLower()) { case
"txt": case
".txt": file = new
TxtFile(fileName); break; case
"avi": case
".avi": file = new
AviFile(fileName); break; //父类是虚方法的写法 //case "txt": //case ".txt": return new TxtFile(fileName); //default: return new File(fileName); } return
file; } }} |
C#简单工厂模式（文件案例）,码迷,mamicode.com
标签：style blog http color 使用 文件
原文地址：http://www.cnblogs.com/hexd1230/p/3703013.html
