C#讀寫ini檔案

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標籤:os   io   檔案   資料   for   art   cti   ar   

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections.Specialized;
using System.IO;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace Comm
{
    /// <summary>
    /// IniFiles的類
    /// </summary>
public class IniFiles
{
    public string FileName; //INI檔案名稱
    //string path = System.IO.Path.Combine(Application.StartupPath,"pos.ini");

    //聲明讀寫INI檔案的API函數
    [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);

    //類的建構函式,傳遞INI檔案名稱
    public IniFiles(string AFileName)
    {
        // 判斷檔案是否存在
        FileInfo fileInfo = new FileInfo(AFileName);
        //Todo:搞清枚舉的用法
        if ((!fileInfo.Exists))
        { //|| (FileAttributes.Directory in fileInfo.Attributes))
        //檔案不存在,建立檔案
        System.IO.StreamWriter sw = new System.IO.StreamWriter(AFileName, false, System.Text.Encoding.Default);
        try
        {
            sw.Write("#表格配置檔案");
            sw.Close();

       }
        catch
        {
             throw (new ApplicationException("Ini檔案不存在"));
        }
    }
    //必須是完全路徑,不能是相對路徑
    FileName = fileInfo.FullName;
}

//寫INI檔案
public void WriteString(string Section, string Ident, string Value)
{
    if (!WritePrivateProfileString(Section, Ident, Value, FileName))
    {

         throw (new ApplicationException("寫Ini檔案出錯"));
    }
}

//讀取INI檔案指定
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);
    //必須設定0(系統預設的字碼頁)的編碼方式,否則無法支援中文
    string s = Encoding.GetEncoding(0).GetString(Buffer);
    s = s.Substring(0, bufLen);
    return s.Trim();
}

//讀整數
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;
    }
}

//寫整數
public void WriteInteger(string Section, string Ident, int Value)
{
     WriteString(Section, Ident, Value.ToString());
}

//讀布爾
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;
    }
}

//寫Bool
public void WriteBool(string Section, string Ident, bool Value)
{
    WriteString(Section, Ident, Convert.ToString(Value));
}

//從Ini檔案中,將指定的Section名稱中的所有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);
    //對Section進行解析
    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;
            }
        }
    }
}

//從Ini檔案中,讀取所有的Sections的名稱
public void ReadSections(StringCollection SectionList)
{
    //Note:必須得用Bytes來實現,StringBuilder只能取到第一個Section
    byte[] Buffer = new byte[65535];
    int bufLen = 0;
    bufLen = GetPrivateProfileString(null, null, null, Buffer,
    Buffer.GetUpperBound(0), FileName);
    GetStringsFromBuffer(Buffer, bufLen, SectionList);
}

//讀取指定的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, ""));
    }
}

/**/
////讀取指定的Section的所有Value到列表中,
//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());
//  }
//}

//清除某個Section
public void EraseSection(string Section)
{
    if (!WritePrivateProfileString(Section, null, null, FileName))
    {
        throw (new ApplicationException("無法清除Ini檔案中的Section"));
    }
}

//刪除某個Section下的鍵
public void DeleteKey(string Section, string Ident)
{
    WritePrivateProfileString(Section, Ident, null, FileName);
}

//Note:對於Win9X,來說需要實現UpdateFile方法將緩衝中的資料寫入檔案
//在Win NT, 2000和XP上,都是直接寫檔案,沒有緩衝,所以,無須實現UpdateFile
//執行完對Ini檔案的修改之後,應該調用本方法更新緩衝區。
public void UpdateFile()
{
    WritePrivateProfileString(null, null, null, FileName);
}

//檢查某個Section下的某個索引值是否存在
public bool ValueExists(string Section, string Ident)
{
    StringCollection Idents = new StringCollection();
    ReadSection(Section, Idents);
    return Idents.IndexOf(Ident) > -1;
}

//確保資源的釋放
~IniFiles()
{
UpdateFile();
}
}
}


[Section1]
KeyWord1 = Valuel
KeyWord2 = Value2
 ……
[Section2]
KeyWord3 = Value3
KeyWord4 = Value4

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