实现文件存储配置信息代码,CSharp代码库,德仔网

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【CSharp】实现文件存储配置信息
作者:dezai / 发布于2014/6/25/ 460

	/接口ISettingProvider
	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Text;
	
	namespace SettingProvider1
	{
	 public interface ISettingProvider
	 {
	 string this[string name] { get; set; }
	 string[] Names { get; }
	 bool NameExists(string name);
	 }
	}
	//实现接口ISettingProvider的类FileSettingsProvider
	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Text;
	using System.Text.RegularExpressions;
	using System.IO;
	using System.Reflection;
	
	namespace SettingProvider1
	{
	 public class FileSettingsProvider:ISettingProvider
	 {
	 string filename = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location); //当前程序路径
	 // private string filename = "c:/myconfig.txt";
	 public FileSettingsProvider()d
	 {
	 filename = Path.Combine(filename, "myconfig.txt");//文件名
	 if (!File.Exists(filename))
	 {
	 using(File.Create(filename))//创建完成后立即释放资源，否则会占用、报错
	 {
	 }
	 }
	 }
	 public string this[string name]
	 {
	 get
	 {
	 string[] lines
	 = File.ReadAllLines(filename, Encoding.UTF8);
	 foreach (string line in lines)
	 {
	 var match = Regex.Match(line, @"(\w+)=(\w+)");
	 string lineName = match.Groups[1].Value;
	 string lineValue = match.Groups[2].Value;
	 if (lineName == name)
	 {
	 return lineValue;
	 }
	 }
	 throw new Exception("没找到！");
	 }
	 set
	 {
	 string[] lines
	 = File.ReadAllLines(filename, Encoding.UTF8);
	 for (int i = 0; i < lines.Length; i++)
	 {
	 string line = lines[i];
	 var match = Regex.Match(line, @"(\w+)=(\w+)");
	 string lineName = match.Groups[1].Value;
	 string lineValue = match.Groups[2].Value;
	 //逐行找，如果遇到名字等于name的就把这一行的值修改
	 //然后写回文件
	 if (lineName == name)
	 {
	 lines[i] = lineName + "=" + value;
	 File.WriteAllLines(filename, lines);
	 return;
	 }
	 }
	 //如果执行到这里，说明没有在旧文件中找到
	 //则将配置的值附加入文件
	 File.AppendAllText(filename,name + "=" + value + "\r\n");
	 }
	 }
	
	 public string[] Names
	 {
	 get
	 {
	 List<string> listName = new List<string>();
	 string[] lines
	 = File.ReadAllLines(filename, Encoding.UTF8);
	 foreach (string line in lines)
	 {
	 var match = Regex.Match(line, @"(\w+)=(\w+)");
	 string lineName = match.Groups[1].Value;
	 listName.Add(lineName);
	 }
	 return listName.ToArray();
	 }
	 }
	
	 public bool NameExists(string name)
	 {
	 return Names.Contains(name);
	 }
	 }
	}
	////测试用例
	 ISettingProvider sp = new FileSettingsProvider();
	 sp = new DESSettingsProvider(sp);
	 if (sp.NameExists("用户名"))
	 {
	 string v1 = sp["用户名"];
	 Console.WriteLine(v1);
	 }
	 sp["用户名"] = "2cfc";
	 sp["密码"] = "4zxv";
	 sp["年龄"] = "9czc";
	
	 foreach (string name in sp.Names)
	 {
	 Console.WriteLine(name);
	 }
	 Console.ReadKey();
	
	////拓展加密解密功能
	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Text;
	
	namespace SettingProvider1
	{
	 public class DESSettingsProvider:ISettingProvider
	 {
	 private ISettingProvider provider;
	 public DESSettingsProvider(ISettingProvider provider)//可以传入实现接口的任一对象
	 {
	 this.provider = provider;
	 }
	 public string this[string name]
	 {
	 get
	 {
	 string s = DES.DESDecrypt(provider[name]);//自定义的解密功能
	 // s = provider[name];
	 return s;
	 }
	 set
	 {
	 string s = DES.DESEncrypt(value);// 自定义的加密功能
	 // s = value;
	 provider[name] =s;
	 }
	 }
	
	 public string[] Names
	 {
	 get { return provider.Names; }
	 }
	
	 public bool NameExists(string name)
	 {
	 return provider.NameExists(name);
	 }
	 }
	}
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　文件存储　　配置信息　
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