// 系统接口类
public static class WinAPI
{
[DllImport("kernel32")] // 写入配置文件的接口
private static extern long WritePrivateProfileString(
string section, string key, string val, string filePath);

[DllImport("kernel32")] // 读取配置文件的接口
private static extern int GetPrivateProfileString(
string section, string key, string def,
StringBuilder retVal, int size, string filePath);

// 向配置文件写入值
public static void ProfileWriteValue(
string section, string key, string value, string path)
{
WritePrivateProfileString(section, key, value, path);
}

// 读取配置文件的值
public static string ProfileReadValue(
string section, string key, string path)
{
StringBuilder sb = new StringBuilder(255);
GetPrivateProfileString(section, key, "", sb, 255, path);
return sb.ToString().Trim();
}
}