这是我前段时间写的一个类，可能现在可以增强很多，但它应该仍然可以正常工作。
该类使用 WinApi GetPrivateProfileSectionNames、GetPrivateProfileSection、GetPrivateProfileString，WritePrivateProfileString并提供从 NET 角度工作的简单方法。
文件 iniUtil.cs
using System;
using System.Text;
using System.Runtime.InteropServices;
using System.Collections.Specialized;
/// <summary>
/// Class to read/write key values in a INI file
/// </summary>
public class iniUtil
{
[DllImport("kernel32.dll")]
private static extern int GetPrivateProfileSectionNames(byte[] lpszReturnBuffer, int nSize, string lpFileName);
[DllImport("kernel32.dll")]
private static extern int GetPrivateProfileSection(string lpAppName, byte[] lpReturnedString, int nSize, string lpFileName);
[DllImport("kernel32.dll")]
private static extern int GetPrivateProfileString(string lpApplicationName, string lpKeyName, string lpDefault, byte[] lpReturnedString, int nSize, string lpFileName);
[DllImport("kernel32.dll")]
private static extern bool WritePrivateProfileString(string lpApplicationName, string lpKeyName, string lpString, string lpFileName);
private const int VALUE_BUFFER = 511;
private const int SECTION_BUFFER = (1024 * 16);
private string m_sIniFile;
/// <summary>
/// .ctor with INI file name
/// </summary>
/// <param name="fileName">Fullpath to the INI file</param>
public iniUtil(string fileName)
{
m_sIniFile = fileName;
}
/// <summary>
/// Set the value for a specific key in a section
/// </summary>
/// <param name="section">Section containing the key to write to</param>
/// <param name="key">Key to insert/update</param>
/// <param name="keyvalue">Value for the key</param>
/// <returns>True if OK</returns>
public bool SetValue(string section, string key, string keyvalue)
{
return WritePrivateProfileString(section, key, keyvalue, m_sIniFile);
}
/// <summary>
/// Gets the value of the specidied key in the specified section,
/// If the key doesn't exists returns the default value
/// </summary>
/// <param name="section">Section containing the key to read from</param>
/// <param name="key">Required key</param>
/// <param name="ifMissing">Value to return in case the key is missing</param>
/// <returns>string value of the key or missing value</returns>
public string GetValue(string section, string key, string ifMissing)
{
byte[] by = new byte[VALUE_BUFFER];
int n = GetPrivateProfileString(section, key, ifMissing, by, VALUE_BUFFER, m_sIniFile);
string s = Encoding.ASCII.GetString(by);
return s.Substring(0, n);
}
/// <summary>
/// Returns the NameValueCollection for every key in the section
/// </summary>
/// <param name="section">Section name</param>
/// <returns>NameValueCollection with nake=Key and value=value</returns>
public NameValueCollection GetSectionKeysvalues(string section)
{
NameValueCollection n = new NameValueCollection();
if(section.Length > 0)
{
byte[] by = new byte[SECTION_BUFFER];
int x = GetPrivateProfileSection(section, by, SECTION_BUFFER, m_sIniFile);
if(x > 0) x--;
string keysvalues = Encoding.ASCII.GetString(by, 0, x);
string[] temp = keysvalues.Split('\0');
foreach(string s in temp)
{
string[] t = s.Split('=');
n.Add(t[0], t[1]);
}
}
return n;
}
/// <summary>
/// Get the names of all sections in .INI
/// </summary>
/// <returns>string array with all the key names</returns>
public string[] GetSectionNames()
{
byte[] by = new byte[SECTION_BUFFER];
int x = GetPrivateProfileSectionNames(by, SECTION_BUFFER, m_sIniFile);
if(x > 0) x--;
string keys = Encoding.ASCII.GetString(by, 0, x);
return keys.Split('\0');
}
}
在你调用的程序中......
iniUtil ini = new iniUtil(@"C:\program files (x86)\myapp\myapp.ini");
string country = ini.GetValue("Carrier","Country","NoCountry");