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c#中 封装操作ini文件的API 修改了一下函数名别的没动

2014-10-27 15:08 507 查看
using System;

using System.IO;

using System.Runtime.InteropServices;

using System.Text;

using System.Collections;

using System.Collections.Specialized;

namespace Ini

{

  /**//// <summary>

  /// IniFiles的类

  /// </summary>

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);

    //类的构造函数,传递INI文件名

    public IniFiles(string AFileName)

    {

      // 判断文件是否存在

      FileInfo fileInfo = new FileInfo(AFileName);

      //Todo:搞清枚举的用法

      if ((!fileInfo.Exists))

      { //|| (FileAttributes.Directory in fileInfo.Attributes))

        //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("#表格配置档案");

          sw.Close();

        }

        catch

        {

          throw (new ApplicationException("Ini文件不存在"));

        }

      }

      //必须是完全路径,不能是相对路径

      FileName = fileInfo.FullName;

    }

    //写INI文件

    public void WriteString(string Section, string Ident, string Value)

    {

      if (!WritePrivateProfileString(Section, Ident, Value, FileName))

      {

 

        throw (new ApplicationException("写Ini文件出错"));

      }

    }

    //读取INI文件指定

    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();

    }

    //读整数

    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;

      }

    }

    //写整数

    public void WriteInteger(string Section, string Ident, int Value)

    {

      WriteString(Section, Ident, Value.ToString());

    }

    //读布尔

    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;

      }

    }

    //写Bool

    public void WriteBool(string Section, string Ident, bool Value)

    {

      WriteString(Section, Ident, Convert.ToString(Value));

    }

    //从Ini文件中,将指定的Section名称中的所有Ident添加到列表中

    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;

          }

        }

      }

    }

    //从Ini文件中,读取所有的Sections的名称

    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);

    }

    //读取指定的Section的所有Value到列表中

    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, ""));

  

      }

    }

    

    //清除某个Section

    public void EraseSection(string Section)

    {

      //

      if (!WritePrivateProfileString(Section, null, null, FileName))

      {

        throw (new ApplicationException("无法清除Ini文件中的Section"));

      }

    }

    //删除某个Section下的键

    public void DeleteKey(string Section, string Ident)

    {

      WritePrivateProfileString(Section, Ident, null, FileName);

    }

    //Note: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。

    public void UpdateFile()

    {

      WritePrivateProfileString(null, null, null, FileName);

    }

    //检查某个Section下的某个键值是否存在

    public bool ValueExists(string Section, string Ident)

    {

      //

      StringCollection Idents = new StringCollection();

      ReadSection(Section, Idents);

      return Idents.IndexOf(Ident) > -1;

    }

    //确保资源的释放

    ~IniFiles()

    {

      UpdateFile();

    }

  }

}
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