C#读取INI文件

  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 *sky
  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 }