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使用SetDynamicTimeZoneInformation设置时区返回false，设置失败。

使用PowerShell设置Set-TimeZone成功。

/// <summary>
/// 设置本地时区
/// 参数取值"China Standard Time"，即可设置为中国时区
/// </summary>
/// <param name="timeZoneId"></param>
/// <returns></returns>
public static bool SetLocalTimeZone(string timeZoneId)
{var dynamicTimeZoneInformation = ConvertDynamicTimeZoneInformation(timeZoneId);bool success;// 检测当前系统是否为旧系统if (IsOldOsVersion()){var tzi = ConvertTimeZoneInformation(dynamicTimeZoneInformation);success = SetTimeZoneInformation(ref tzi);}else{success = SetDynamicTimeZoneInformation(ref dynamicTimeZoneInformation);}if (success){TimeZoneInfo.ClearCachedData(); // 清除缓存}else{success = SetTimeZoneByPowerShell(dynamicTimeZoneInformation.timeZoneKeyName);}return success;
}/// <summary>
/// 根据时区名获取对应的DynamicTimeZoneInformation
/// </summary>
/// <param name="timeZoneName"></param>
/// <returns></returns>
private static DynamicTimeZoneInformation ConvertDynamicTimeZoneInformation(string timeZoneName)
{var timeZoneInfo = TimeZoneInfo.FindSystemTimeZoneById(timeZoneName);var info = new DynamicTimeZoneInformation{standardName = timeZoneInfo.StandardName,standardDate = new SystemTime(),daylightName = timeZoneInfo.DaylightName,daylightDate = new SystemTime(),timeZoneKeyName = timeZoneInfo.Id,dynamicDaylightTimeDisabled = false,bias = -Convert.ToInt32(timeZoneInfo.BaseUtcOffset.TotalMinutes)};return info;
}/// <summary>
/// 判断Windows系统是否为旧版本
/// </summary>
/// <returns></returns>
public static bool IsOldOsVersion()
{var os = Environment.OSVersion;return os.Platform != PlatformID.Win32NT || os.Version.Major < 6;
}/// <summary>
/// 将DynamicTimeZoneInformation转换为TimeZoneInformation
/// </summary>
/// <param name="info"></param>
/// <returns></returns>
private static TimeZoneInformation ConvertTimeZoneInformation(DynamicTimeZoneInformation info)
{return new TimeZoneInformation{bias = info.bias,standardName = info.standardName,standardDate = info.standardDate,standardBias = info.standardBias,daylightName = info.daylightName,daylightDate = info.daylightDate,daylightBias = info.daylightBias};
}// 针对于旧Windows系统，如Windows XP
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern int GetTimeZoneInformation(ref TimeZoneInformation lpTimeZoneInformation);[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern bool SetTimeZoneInformation(ref TimeZoneInformation lpTimeZoneInformation);//针对于新Windows系统，如Windows 7,Windows 8, Windows10
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern int GetDynamicTimeZoneInformation(ref DynamicTimeZoneInformation lpDynamicTimeZoneInformation);[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern bool SetDynamicTimeZoneInformation(ref DynamicTimeZoneInformation lpDynamicTimeZoneInformation);/// <summary>
/// 通过PowerShell设置时区
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public static bool SetTimeZoneByPowerShell(string id)
{using var powerShell = PowerShell.Create();try{//通过PowerShell设置时区powerShell.AddCommand("Set-TimeZone").AddParameter("Id", id);powerShell.Invoke();}catch (Exception){return false;}return true;}