C# Ini文件操作實例
在開源中國看到的操作ini文件的,寫的還不看,留著以后用
using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using System.Collections;
using System.Collections.Specialized;
namespace wuyisky{
/**//**/
/**//// <summary>
/// IniFiles的類
/// </summary>
public class IniFiles
{
public string FileName; //INI文件名
//聲明讀寫INI文件的API函數(shù)
[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);
//類的構(gòu)造函數(shù),傳遞INI文件名
public IniFiles(string AFileName)
{
// 判斷文件是否存在
FileInfo fileInfo = new FileInfo(AFileName);
//Todo:搞清枚舉的用法
if ((!fileInfo.Exists))
{ //|| (FileAttributes.Directory in fileInfo.Attributes))
//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("#表格配置檔案");
sw.Close();
}
catch
{
throw (new ApplicationException("Ini文件不存在"));
}
}
//必須是完全路徑,不能是相對路徑
FileName = fileInfo.FullName;
}
//寫INI文件
public void WriteString(string Section, string Ident, string Value)
{
if (!WritePrivateProfileString(Section, Ident, Value, FileName))
{
throw (new ApplicationException("寫Ini文件出錯"));
}
}
//讀取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);
//必須設(shè)定0(系統(tǒng)默認(rèn)的代碼頁)的編碼方式,否則無法支持中文
string s = Encoding.GetEncoding(0).GetString(Buffer);
s = s.Substring(0, bufLen);
return s.Trim();
}
//讀整數(shù)
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(shù)
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B(tài)ool
public void WriteBool(string Section, string Ident, bool Value)
{
WriteString(Section, Ident, Convert.ToString(Value));
}
//從Ini文件中,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(jìn)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文件中,讀取所有的Sections的名稱
public void ReadSections(StringCollection SectionList)
{
//Note:必須得用Bytes來實現(xiàn),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文件中的Section"));
}
}
//刪除某個Section下的鍵
public void DeleteKey(string Section, string Ident)
{
WritePrivateProfileString(Section, Ident, null, FileName);
}
//Note:對于Win9X,來說需要實現(xiàn)UpdateFile方法將緩沖中的數(shù)據(jù)寫入文件
//在Win NT, 2000和XP上,都是直接寫文件,沒有緩沖,所以,無須實現(xiàn)UpdateFile
//執(zhí)行完對Ini文件的修改之后,應(yīng)該調(diào)用本方法更新緩沖區(qū)。
public void UpdateFile()
{
WritePrivateProfileString(null, null, null, FileName);
}
//檢查某個Section下的某個鍵值是否存在
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();
}
}
}
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