C# Code:

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Runtime.InteropServices;

namespace CSFramework.Tech2011
{
   public class IniFileAPI
   {
      private string fileName;
      [DllImport("kernel32")]
      private static extern int GetPrivateProfileInt(
      string lpAppName,// 指向包含 Section 名称的字符串地址
      string lpKeyName,// 指向包含 Key 名称的字符串地址
      int nDefault,// 如果 Key 值没有找到，则返回缺省的值是多少
      string lpFileName
      );
      [DllImport("kernel32")]
      private static extern int GetPrivateProfileString(
      string lpAppName,// 指向包含 Section 名称的字符串地址
      string lpKeyName,// 指向包含 Key 名称的字符串地址
      string lpDefault,// 如果 Key 值没有找到，则返回缺省的字符串的地址
      StringBuilder lpReturnedString,// 返回字符串的缓冲区地址
      int nSize,// 缓冲区的长度
      string lpFileName
      );
      [DllImport("kernel32")]
      private static extern bool WritePrivateProfileString(
      string lpAppName,// 指向包含 Section 名称的字符串地址
      string lpKeyName,// 指向包含 Key 名称的字符串地址
      string lpString,// 要写的字符串地址
      string lpFileName
      );
      
      public void IniFile(string filename)
      {
         fileName = filename;
      }
      public int GetInt(string section, string key, int def)
      {
         return GetPrivateProfileInt(section, key, def, fileName);
      }
      public string GetString(string section, string key, string def)
      {
         StringBuilder temp = new StringBuilder(1024);
         GetPrivateProfileString(section, key, def, temp, 1024, fileName);
         return temp.ToString();
      }
      public void WriteInt(string section, string key, int iVal)
      {
         WritePrivateProfileString(section, key, iVal.ToString(), fileName);
      }
      public void WriteString(string section, string key, string strVal)
      {
         WritePrivateProfileString(section, key, strVal, fileName);
      }
      public void DelKey(string section, string key)
      {
         WritePrivateProfileString(section, key, null, fileName);
      }
      public void DelSection(string section)
      {
         WritePrivateProfileString(section, null, null, fileName);
      }
      
   }
}


//来源:C/S框架网(www.csframework.com) QQ:1980854898