C#读写Ini文件

using System; using System.Collections.Generic; using System.Text; using System.Runtime.InteropServices; using System.Collections.Specialized; using System.IO; namespace EstartManage { public class IniFiles { public string FileName; //INI文件名 //声明读写INI文件的API函数 [DllImport("kernel32")] private static extern bool WritePrivateProfileString(string section, string key, string val, string filePath); [DllImport("kernel32")] private static extern int GetPrivateProfileString(string section, string key, string def, byte[] retVal, int size, string filePath); /// <summary> /// 构造函数，初始化文件名 /// </summary> /// <param name="AFileName"></param> public IniFiles(string AFileName) { FileInfo fileInfo = new FileInfo(AFileName); // 判断文件是否存在 if ((!fileInfo.Exists)) { //文件不存在，建立文件 System.IO.StreamWriter sw = new System.IO.StreamWriter(AFileName, false, System.Text.Encoding.Default); try { sw.Write("#====================="); sw.Close(); } catch { throw (new ApplicationException("Ini文件不存在")); } } //必须是完全路径 FileName = fileInfo.FullName; } /// <summary> /// 写文件 /// </summary> /// <param name="Section"></param> /// <param name="Ident"></param> /// <param name="Value"></param> public void WriteString(string Section, string Ident, string Value) { if (!WritePrivateProfileString(Section, Ident, Value, FileName)) { throw (new ApplicationException("写Ini文件出错")); } } /// <summary> /// 读字符串 /// </summary> /// <param name="Section"></param> /// <param name="Ident"></param> /// <param name="Default"></param> /// <returns></returns> public string ReadString(string Section, string Ident, string Default) { Byte[] Buffer = new Byte[65535]; int bufLen = GetPrivateProfileString(Section, Ident, Default, Buffer, Buffer.GetUpperBound(0), FileName); //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 string s = Encoding.GetEncoding(0).GetString(Buffer); s = s.Substring(0, bufLen); return s.Trim(); } /// <summary> /// 读整数 /// </summary> /// <param name="Section"></param> /// <param name="Ident"></param> /// <param name="Default"></param> /// <returns></returns> public int ReadInteger(string Section, string Ident, int Default) { string intStr = ReadString(Section, Ident, Convert.ToString(Default)); try { return Convert.ToInt32(intStr); } catch (Exception ex) { Console.WriteLine(ex.Message); return Default; } } /// <summary> /// 写整数 /// </summary> /// <param name="Section"></param> /// <param name="Ident"></param> /// <param name="Value"></param> public void WriteInteger(string Section, string Ident, int Value) { WriteString(Section, Ident, Value.ToString()); } /// <summary> /// 读布尔值 /// </summary> /// <param name="Section"></param> /// <param name="Ident"></param> /// <param name="Default"></param> /// <returns></returns> public bool ReadBool(string Section, string Ident, bool Default) { try { return Convert.ToBoolean(ReadString(Section, Ident, Convert.ToString(Default))); } catch (Exception ex) { Console.WriteLine(ex.Message); return Default; } } /// <summary> /// 写Bool值 /// </summary> /// <param name="Section"></param> /// <param name="Ident"></param> /// <param name="Value"></param> public void WriteBool(string Section, string Ident, bool Value) { WriteString(Section, Ident, Convert.ToString(Value)); } /// <summary> /// 从Ini文件中，将指定的Section名称中的所有Ident添加到列表中 /// </summary> /// <param name="Section"></param> /// <param name="Idents"></param> public void ReadSection(string Section, StringCollection Idents) { Byte[] Buffer = new Byte[16384]; //Idents.Clear(); int bufLen = GetPrivateProfileString(Section, null, null, Buffer, Buffer.GetUpperBound(0), FileName); //对Section进行解析 GetStringsFromBuffer(Buffer, bufLen, Idents); } private void GetStringsFromBuffer(Byte[] Buffer, int bufLen, StringCollection Strings) { Strings.Clear(); if (bufLen != 0) { int start = 0; for (int i = 0; i < bufLen; i++) { if ((Buffer[i] == 0) && ((i - start) > 0)) { String s = Encoding.GetEncoding(0).GetString(Buffer, start, i - start); Strings.Add(s); start = i + 1; } } } } /// <summary> /// 读取所有的Sections的名称 /// </summary> /// <param name="SectionList"></param> public void ReadSections(StringCollection SectionList) { //Note:必须得用Bytes来实现，StringBuilder只能取到第一个Section byte[] Buffer = new byte[65535]; int bufLen = 0; bufLen = GetPrivateProfileString(null, null, null, Buffer, Buffer.GetUpperBound(0), FileName); GetStringsFromBuffer(Buffer, bufLen, SectionList); } /// <summary> /// 读取指定的Section的所有Value到列表中 /// </summary> /// <param name="Section"></param> /// <param name="Values"></param> public void ReadSectionValues(string Section, NameValueCollection Values) { StringCollection KeyList = new StringCollection(); ReadSection(Section, KeyList); Values.Clear(); foreach (string key in KeyList) { Values.Add(key, ReadString(Section, key, "")); } } /// <summary> /// 读取指定的Section的所有Value到列表中 /// </summary> /// <param name="Section"></param> /// <param name="Values"></param> /// <param name="splitString"></param> public void ReadSectionValues(string Section, NameValueCollection Values, char splitString) { //string sectionValue; //string[] sectionValueSplit; //StringCollection KeyList = new StringCollection(); //ReadSection(Section, KeyList); //Values.Clear(); //foreach (string key in KeyList) //{ // sectionValue = ReadString(Section, key, ""); // sectionValueSplit = sectionValue.Split(splitString); // Values.Add(key, sectionValueSplit[0].ToString(), sectionValueSplit[1].ToString()); //} } /// <summary> /// 清除某个Section /// </summary> /// <param name="Section"></param> public void EraseSection(string Section) { // if (!WritePrivateProfileString(Section, null, null, FileName)) { throw (new ApplicationException("无法清除Ini文件中的Section")); } } /// <summary> /// 删除某个Section下的键 /// </summary> /// <param name="Section"></param> /// <param name="Ident"></param> public void DeleteKey(string Section, string Ident) { WritePrivateProfileString(Section, Ident, null, FileName); } /// <summary> /// 对于Win9X，来说需要实现UpdateFile方法将缓冲中的数据写入文件 /// 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 /// 执行完对Ini文件的修改之后，应该调用本方法更新缓冲区。 /// </summary> public void UpdateFile() { WritePrivateProfileString(null, null, null, FileName); } /// <summary> /// 检查某个Section下的某个键值是否存在 /// </summary> /// <param name="Section"></param> /// <param name="Ident"></param> /// <returns></returns> public bool ValueExists(string Section, string Ident) { // StringCollection Idents = new StringCollection(); ReadSection(Section, Idents); return Idents.IndexOf(Ident) > -1; } /// <summary> /// 确保资源的释放 /// </summary> ~IniFiles() { UpdateFile(); } } }

 

Ini文件的好处在于软件的绿色化，可以把写入注册表的某些值替换写在ini文件中