C#读取INI文件

       虽然微软早已经建议在WINDOWS中用注册表代替INI文件,但是在实际应用中,INI文件仍然有用武之地,尤其现在绿色软件的流行,越来越多的程序将自己的一些配置信息保存到了INI文件中。

       INI文件是文本文件,由若干节(section)组成,在每个带括号的标题下面,是若干个关键词(key)及其对应的值(Value)

[Section]

Key=Value

       VC中提供了API函数进行INI文件的读写操作,但是微软推出的C#编程语言中却没有相应的方法,下面是一个C# ini文件读写类,从网上收集的,很全,就是没有对section的改名功能,高手可以增加一个。

  1 using System;
  2 using System.IO;
  3 using System.Runtime.InteropServices;
  4 using System.Text;
  5 using System.Collections;
  6 using System.Collections.Specialized;
  7  
  8 namespace wuyisky
  9 {
 10     /// <summary>
 11     /// IniFiles的类
 12     /// </summary>
 13     public class IniFiles
 14     {
 15         public string FileName; //INI文件名
 16         //声明读写INI文件的API函数
 17         [DllImport("kernel32")]
 18         private static extern bool WritePrivateProfileString(string section, string key, string val, string filePath);
 19         [DllImport("kernel32")]
 20         private static extern int GetPrivateProfileString(string section, string key, string def, byte[] retVal, int size, string filePath);
 21         //类的构造函数,传递INI文件名
 22         public IniFiles(string AFileName)
 23         {
 24             // 判断文件是否存在
 25             FileInfo fileInfo = new FileInfo(AFileName);
 26             //Todo:搞清枚举的用法
 27             if ((!fileInfo.Exists))
 28             { //|| (FileAttributes.Directory in fileInfo.Attributes))
 29                 //文件不存在,建立文件
 30                 System.IO.StreamWriter sw = new System.IO.StreamWriter(AFileName, false, System.Text.Encoding.Default);
 31                 try
 32                 {
 33                     sw.Write("#表格配置档案");
 34                     sw.Close();
 35                 }
 36                 catch
 37                 {
 38                     throw (new ApplicationException("Ini文件不存在"));
 39                 }
 40             }
 41             //必须是完全路径,不能是相对路径
 42             FileName = fileInfo.FullName;
 43         }
 44         //写INI文件
 45         public void WriteString(string Section, string Ident, string Value)
 46         {
 47             if (!WritePrivateProfileString(Section, Ident, Value, FileName))
 48             {
 49                 throw (new ApplicationException("写Ini文件出错"));
 50             }
 51         }
 52         //读取INI文件指定
 53         public string ReadString(string Section, string Ident, string Default)
 54         {
 55             Byte[] Buffer = new Byte[65535];
 56             int bufLen = GetPrivateProfileString(Section, Ident, Default, Buffer, Buffer.GetUpperBound(0), FileName);
 57             //必须设定0(系统默认的代码页)的编码方式,否则无法支持中文
 58             string s = Encoding.GetEncoding(0).GetString(Buffer);
 59             s = s.Substring(0, bufLen);
 60             return s.Trim();
 61         }
 62  
 63         //读整数
 64         public int ReadInteger(string Section, string Ident, int Default)
 65         {
 66             string intStr = ReadString(Section, Ident, Convert.ToString(Default));
 67             try
 68             {
 69                 return Convert.ToInt32(intStr);
 70             }
 71             catch (Exception ex)
 72             {
 73                 Console.WriteLine(ex.Message);
 74                 return Default;
 75             }
 76         }
 77  
 78         //写整数
 79         public void WriteInteger(string Section, string Ident, int Value)
 80         {
 81             WriteString(Section, Ident, Value.ToString());
 82         }
 83  
 84         //读布尔
 85         public bool ReadBool(string Section, string Ident, bool Default)
 86         {
 87             try
 88             {
 89                 return Convert.ToBoolean(ReadString(Section, Ident, Convert.ToString(Default)));
 90             }
 91             catch (Exception ex)
 92             {
 93                 Console.WriteLine(ex.Message);
 94                 return Default;
 95             }
 96         }
 97  
 98         //写Bool
 99         public void WriteBool(string Section, string Ident, bool Value)
100         {
101             WriteString(Section, Ident, Convert.ToString(Value));
102         }
103  
104         //从Ini文件中,将指定的Section名称中的所有Ident添加到列表中
105         public void ReadSection(string Section, StringCollection Idents)
106         {
107             Byte[] Buffer = new Byte[16384];
108             //Idents.Clear();
109  
110             int bufLen = GetPrivateProfileString(Section, null, null, Buffer, Buffer.GetUpperBound(0),
111                   FileName);
112             //对Section进行解析
113             GetStringsFromBuffer(Buffer, bufLen, Idents);
114         }
115  
116         private void GetStringsFromBuffer(Byte[] Buffer, int bufLen, StringCollection Strings)
117         {
118             Strings.Clear();
119             if (bufLen != 0)
120             {
121                 int start = 0;
122                 for (int i = 0; i < bufLen; i++)
123                 {
124                     if ((Buffer[i] == 0) && ((i - start) > 0))
125                     {
126                         String s = Encoding.GetEncoding(0).GetString(Buffer, start, i - start);
127                         Strings.Add(s);
128                         start = i + 1;
129                     }
130                 }
131             }
132         }
133         //从Ini文件中,读取所有的Sections的名称
134         public void ReadSections(StringCollection SectionList)
135         {
136             //Note:必须得用Bytes来实现,StringBuilder只能取到第一个Section
137             byte[] Buffer = new byte[65535];
138             int bufLen = 0;
139             bufLen = GetPrivateProfileString(null, null, null, Buffer,
140              Buffer.GetUpperBound(0), FileName);
141             GetStringsFromBuffer(Buffer, bufLen, SectionList);
142         }
143         //读取指定的Section的所有Value到列表中
144         public void ReadSectionValues(string Section, NameValueCollection Values)
145         {
146             StringCollection KeyList = new StringCollection();
147             ReadSection(Section, KeyList);
148             Values.Clear();
149             foreach (string key in KeyList)
150             {
151                 Values.Add(key, ReadString(Section, key, ""));
152             }
153         }
154         ////读取指定的Section的所有Value到列表中,
155         //public void ReadSectionValues(string Section, NameValueCollection Values,char splitString)
156         //{  string sectionValue;
157         //  string[] sectionValueSplit;
158         //  StringCollection KeyList = new StringCollection();
159         //  ReadSection(Section, KeyList);
160         //  Values.Clear();
161         //  foreach (string key in KeyList)
162         //  {
163         //    sectionValue=ReadString(Section, key, "");
164         //    sectionValueSplit=sectionValue.Split(splitString);
165         //    Values.Add(key, sectionValueSplit[0].ToString(),sectionValueSplit[1].ToString());
166  
167         //  }
168         //}
169         //清除某个Section
170         public void EraseSection(string Section)
171         {
172             if (!WritePrivateProfileString(Section, null, null, FileName))
173             {
174                 throw (new ApplicationException("无法清除Ini文件中的Section"));
175             }
176         }
177         //删除某个Section下的键
178         public void DeleteKey(string Section, string Ident)
179         {
180             WritePrivateProfileString(Section, Ident, null, FileName);
181         }
182         //Note:对于Win9X,来说需要实现UpdateFile方法将缓冲中的数据写入文件
183         //在Win NT, 2000和XP上,都是直接写文件,没有缓冲,所以,无须实现UpdateFile
184         //执行完对Ini文件的修改之后,应该调用本方法更新缓冲区。
185         public void UpdateFile()
186         {
187             WritePrivateProfileString(null, null, null, FileName);
188         }
189  
190         //检查某个Section下的某个键值是否存在
191         public bool ValueExists(string Section, string Ident)
192         {
193             StringCollection Idents = new StringCollection();
194             ReadSection(Section, Idents);
195             return Idents.IndexOf(Ident) > -1;
196         }
197  
198         //确保资源的释放
199         ~IniFiles()
200         {
201             UpdateFile();
202         }
203     }
204 }
View Code

 

文章来源:http://www.cnblogs.com/nozer/articles/1934958.html

 

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