C#使用kernel32.dll读写INI文件的案例详解

//写入
[DllImport("kernel32.dll")]
private static extern long WritePrivateProfileString(string section, string key, string val, string    filePath);
//读取
[DllImport("kernel32.dll")]
private static extern int GetPrivateProfileString(string section, string key, string def,  StringBuilder retVal, int size, string INIPath);

public void IniWriteValue(string Section, string Key, string Value)
  {
   string inipath = ".CONFIG.INI";
   WritePrivateProfileString(Section, Key, Value, inipath);
  }
public void IniWriteValues() {
   IniWriteValue("CONFIG", "Comport", ComPort);
  }

 StringBuilder temp = new StringBuilder(500);
   GetPrivateProfileString("CONFIG", "Player", "", temp, 500, ".\CONFIG.INI");
   Player = temp.ToString();

class IniFile
{   
    // 引入kernel32.dll库，用于写入INI文件
    [DllImport("kernel32.dll")]
    private static extern long WritePrivateProfileString(string section, string key, string val, string filePath);
    // 引入kernel32.dll库，用于读取INI文件
    [DllImport("kernel32.dll")]
    private static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string INIPath);
    // INI文件路径
    private string _filePath;
    // 构造函数，初始化INI文件路径
    public IniFile(string filePath)
    {
        _filePath = filePath;
    }
    // 写入INI文件
    public void WriteValue(string section, string key, string value)
    {
        WritePrivateProfileString(section, key, value, _filePath);
    }
    // 写入INI文件
    public string ReadValue(string section, string key, string defaultValue = "")
    {
        StringBuilder sb = new StringBuilder(255);
        GetPrivateProfileString(section, key, defaultValue, sb, 255, _filePath);
        return sb.ToString();
    }
}