如何使用.net 更改Windows2k8的时区设置

我已经尝试用c#代码改变我的系统的时区几天了,而我正在尝试的任何东西都没有多大意义或工作。 我开始尝试使用我在其他问题上看到的SetTimeZoneInformation的PInvoke语法。

[DllImport("kernel32.dll", CharSet = CharSet.Auto)] private static extern bool SetTimeZoneInformation([In] ref TimeZoneInformation lpTimeZoneInformation); 

我正在研究如何创建TimeZoneInformation结构并因为我的系统显然具有动态DST系统而感到困惑。 事实certificate,自从微软Vista添加了一种处理时区的新方法以来。 您现在必须使用SetDynamicTimeZoneInformation

 [DllImport("kernel32.dll", CharSet = CharSet.Auto)] private static extern bool SetDynamicTimeZoneInformation([In] ref DynamicTimeZoneInformation lpTimeZoneInformation); 

我在msdn上搜索了这个API的帮助,发现了一些问题,“应用程序必须具有SE_TIME_ZONE_NAME特权才能使此function成功。” 最终我发现这个页面看起来像是一个很好的代码来完成这个。 问题是它不起作用。

这是我的非工作代码:

 [StructLayout(LayoutKind.Sequential)] public struct LUID { public int LowPart; public int HighPart; } [StructLayout(LayoutKind.Sequential)] public struct TOKEN_PRIVILEGES { public LUID Luid; public UInt32 Attributes; public UInt32 PrivilegeCount; } [StructLayoutAttribute(LayoutKind.Sequential)] public struct SystemTime { public ushort Year; public ushort Month; public ushort DayOfWeek; public ushort Day; public ushort Hour; public ushort Minute; public ushort Second; public ushort Millisecond; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] public struct DynamicTimeZoneInformation { public int bias; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)] public string standardName; public SystemTime standardDate; public int standardBias; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)] public string daylightName; public SystemTime daylightDate; public int daylightBias; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)] public string timeZoneKeyName; public bool dynamicDaylightTimeDisabled; } [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)] private static extern int GetDynamicTimeZoneInformation(out DynamicTimeZoneInformation lpTimeZoneInformation); [DllImport("kernel32.dll", CharSet = CharSet.Auto)] private static extern bool SetDynamicTimeZoneInformation([In] ref DynamicTimeZoneInformation lpTimeZoneInformation); [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)] public static extern int OpenProcessToken(int ProcessHandle, int DesiredAccess, ref int tokenhandle); [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)] public static extern int GetCurrentProcess(); [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)] public static extern int LookupPrivilegeValue(string lpsystemname, string lpname, [MarshalAs(UnmanagedType.Struct)] ref LUID lpLuid); [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)] public static extern int AdjustTokenPrivileges(int tokenhandle, int disableprivs, [MarshalAs(UnmanagedType.Struct)]ref TOKEN_PRIVILEGES Newstate, int bufferlength, int PreivousState, int Returnlength); public const int TOKEN_ASSIGN_PRIMARY = 0x00000001; public const int TOKEN_DUPLICATE = 0x00000002; public const int TOKEN_IMPERSONATE = 0x00000004; public const int TOKEN_QUERY = 0x00000008; public const int TOKEN_QUERY_SOURCE = 0x00000010; public const int TOKEN_ADJUST_PRIVILEGES = 0x00000020; public const int TOKEN_ADJUST_GROUPS = 0x00000040; public const int TOKEN_ADJUST_DEFAULT = 0x00000080; public const UInt32 SE_PRIVILEGE_ENABLED_BY_DEFAULT = 0x00000001; public const UInt32 SE_PRIVILEGE_ENABLED = 0x00000002; public const UInt32 SE_PRIVILEGE_REMOVED = 0x00000004; public const UInt32 SE_PRIVILEGE_USED_FOR_ACCESS = 0x80000000; public static bool EnablePrivilege(string privilege) { try { int token = 0; int retVal = 0; TOKEN_PRIVILEGES TP = new TOKEN_PRIVILEGES(); LUID LD = new LUID(); retVal = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref token); retVal = LookupPrivilegeValue(null, privilege, ref LD); TP.PrivilegeCount = 1; TP.Attributes = SE_PRIVILEGE_ENABLED; TP.Luid = LD; retVal = AdjustTokenPrivileges(token, 0, ref TP, 1024, 0, 0); return true; } catch { return false; } } public static bool DisablePrivilege(string privilege) { try { int token = 0; int retVal = 0; TOKEN_PRIVILEGES TP = new TOKEN_PRIVILEGES(); LUID LD = new LUID(); retVal = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref token); retVal = LookupPrivilegeValue(null, privilege, ref LD); TP.PrivilegeCount = 1; // TP.Attributes should be none (not set) to disable privilege TP.Luid = LD; retVal = AdjustTokenPrivileges(token, 0, ref TP, 1024, 0, 0); return true; } catch { return false; } } public bool SetSystemTimeZone(string timeZoneId) { //I'm using the TimeZoneInfo class to populate a list in the UI. This code to retrieve the correct timezone is working TimeZoneInfo newTimeZone = TimeZoneInfo.FindSystemTimeZoneById(timeZoneId); DynamicTimeZoneInformation dtzi = new DynamicTimeZoneInformation(); dtzi.bias = -(Convert.ToInt32(newTimeZone.BaseUtcOffset.TotalMinutes)); dtzi.standardBias = 0; //Here's where I start to lose it. I don't know which adjustment rule to use from the GetAdjustmentRules call. I'm just using the last one as that seems to usually be the most recent, but it doesn't always have to be. dtzi.daylightBias = Convert.ToInt32(newTimeZone.GetAdjustmentRules().Last().DaylightDelta.TotalMinutes); dtzi.standardName = newTimeZone.StandardName; dtzi.daylightName = newTimeZone.DaylightName; //It would be nice if this key name would just look up the timezone from the registry and use its settings dtzi.timeZoneKeyName = newTimeZone.Id; //No idea if this is the right way to create the SystemTime object I need here. SystemTime standardDate = new SystemTime(); standardDate.Year = 0; standardDate.Hour = (ushort)newTimeZone.GetAdjustmentRules().Last().DaylightTransitionEnd.TimeOfDay.Hour; standardDate.Minute = (ushort)newTimeZone.GetAdjustmentRules().Last().DaylightTransitionEnd.TimeOfDay.Minute; standardDate.DayOfWeek = (ushort)newTimeZone.GetAdjustmentRules().Last().DaylightTransitionEnd.DayOfWeek; standardDate.Month = (ushort)newTimeZone.GetAdjustmentRules().Last().DaylightTransitionEnd.Month; standardDate.Day = (ushort)newTimeZone.GetAdjustmentRules().Last().DaylightTransitionEnd.Week; dtzi.standardDate = standardDate; SystemTime daylightDate = new SystemTime(); standardDate.Year = 0; standardDate.Hour = (ushort)newTimeZone.GetAdjustmentRules().Last().DaylightTransitionStart.TimeOfDay.Hour; standardDate.Minute = (ushort)newTimeZone.GetAdjustmentRules().Last().DaylightTransitionStart.TimeOfDay.Minute; standardDate.DayOfWeek = (ushort)newTimeZone.GetAdjustmentRules().Last().DaylightTransitionStart.DayOfWeek; standardDate.Month = (ushort)newTimeZone.GetAdjustmentRules().Last().DaylightTransitionStart.Month; standardDate.Day = (ushort)newTimeZone.GetAdjustmentRules().Last().DaylightTransitionStart.Week; dtzi.daylightDate = daylightDate; dtzi.dynamicDaylightTimeDisabled = false; EnablePrivilege("SeTimeZonePrivilege"); if (!SetDynamicTimeZoneInformation(ref dtzi)) returnVal = false; DisablePrivilege("SeTimeZonePrivilege"); return returnVal; } 

有没有人对此有任何好运…在后Vista系统中设置时区? 也许总有一种更好的方式。

谢谢

我以前做过这个,这就是我做的。

唯一的问题是,当您在任务栏中检查DateTime时,它表示Your current time zone is not recognized. Please select a valid time zone using the link below. Your current time zone is not recognized. Please select a valid time zone using the link below. 我从来没有能够“修复”……所以是的。

编辑 :我找到了一种方法使时区“有效”(你必须重新启动机器才能使它工作)。 请务必阅读说明app.manifest需要requireAdministrator 。 ^ _ ^

祝好运!

 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; using Microsoft.Win32; namespace TimeZoneTest { [StructLayoutAttribute(LayoutKind.Sequential)] public struct SystemTime { [MarshalAs(UnmanagedType.U2)] public short Year; [MarshalAs(UnmanagedType.U2)] public short Month; [MarshalAs(UnmanagedType.U2)] public short DayOfWeek; [MarshalAs(UnmanagedType.U2)] public short Day; [MarshalAs(UnmanagedType.U2)] public short Hour; [MarshalAs(UnmanagedType.U2)] public short Minute; [MarshalAs(UnmanagedType.U2)] public short Second; [MarshalAs(UnmanagedType.U2)] public short Milliseconds; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] public struct TimeZoneInformation { [MarshalAs(UnmanagedType.I4)] public int Bias; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x20)] public string StandardName; public SystemTime StandardDate; [MarshalAs(UnmanagedType.I4)] public int StandardBias; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x20)] public string DaylightName; public SystemTime DaylightDate; [MarshalAs(UnmanagedType.I4)] public int DaylightBias; } [StructLayout(LayoutKind.Sequential)] public struct RegistryTimeZoneInformation { [MarshalAs(UnmanagedType.I4)] public int Bias; [MarshalAs(UnmanagedType.I4)] public int StandardBias; [MarshalAs(UnmanagedType.I4)] public int DaylightBias; public SystemTime StandardDate; public SystemTime DaylightDate; public RegistryTimeZoneInformation(TimeZoneInformation tzi) { this.Bias = tzi.Bias; this.StandardDate = tzi.StandardDate; this.StandardBias = tzi.StandardBias; this.DaylightDate = tzi.DaylightDate; this.DaylightBias = tzi.DaylightBias; } public RegistryTimeZoneInformation(byte[] bytes) { if ((bytes == null) || (bytes.Length != 0x2c)) { throw new ArgumentException("Argument_InvalidREG_TZI_FORMAT"); } this.Bias = BitConverter.ToInt32(bytes, 0); this.StandardBias = BitConverter.ToInt32(bytes, 4); this.DaylightBias = BitConverter.ToInt32(bytes, 8); this.StandardDate.Year = BitConverter.ToInt16(bytes, 12); this.StandardDate.Month = BitConverter.ToInt16(bytes, 14); this.StandardDate.DayOfWeek = BitConverter.ToInt16(bytes, 0x10); this.StandardDate.Day = BitConverter.ToInt16(bytes, 0x12); this.StandardDate.Hour = BitConverter.ToInt16(bytes, 20); this.StandardDate.Minute = BitConverter.ToInt16(bytes, 0x16); this.StandardDate.Second = BitConverter.ToInt16(bytes, 0x18); this.StandardDate.Milliseconds = BitConverter.ToInt16(bytes, 0x1a); this.DaylightDate.Year = BitConverter.ToInt16(bytes, 0x1c); this.DaylightDate.Month = BitConverter.ToInt16(bytes, 30); this.DaylightDate.DayOfWeek = BitConverter.ToInt16(bytes, 0x20); this.DaylightDate.Day = BitConverter.ToInt16(bytes, 0x22); this.DaylightDate.Hour = BitConverter.ToInt16(bytes, 0x24); this.DaylightDate.Minute = BitConverter.ToInt16(bytes, 0x26); this.DaylightDate.Second = BitConverter.ToInt16(bytes, 40); this.DaylightDate.Milliseconds = BitConverter.ToInt16(bytes, 0x2a); } } public class TokenPrivilegesAccess { [DllImport("advapi32.dll", CharSet = CharSet.Auto)] public static extern int OpenProcessToken(int ProcessHandle, int DesiredAccess, ref int tokenhandle); [DllImport("kernel32.dll", CharSet = CharSet.Auto)] public static extern int GetCurrentProcess(); [DllImport("advapi32.dll", CharSet = CharSet.Auto)] public static extern int LookupPrivilegeValue(string lpsystemname, string lpname, [MarshalAs(UnmanagedType.Struct)] ref LUID lpLuid); [DllImport("advapi32.dll", CharSet = CharSet.Auto)] public static extern int AdjustTokenPrivileges(int tokenhandle, int disableprivs, [MarshalAs(UnmanagedType.Struct)]ref TOKEN_PRIVILEGE Newstate, int bufferlength, int PreivousState, int Returnlength); public const int TOKEN_ASSIGN_PRIMARY = 0x00000001; public const int TOKEN_DUPLICATE = 0x00000002; public const int TOKEN_IMPERSONATE = 0x00000004; public const int TOKEN_QUERY = 0x00000008; public const int TOKEN_QUERY_SOURCE = 0x00000010; public const int TOKEN_ADJUST_PRIVILEGES = 0x00000020; public const int TOKEN_ADJUST_GROUPS = 0x00000040; public const int TOKEN_ADJUST_DEFAULT = 0x00000080; public const UInt32 SE_PRIVILEGE_ENABLED_BY_DEFAULT = 0x00000001; public const UInt32 SE_PRIVILEGE_ENABLED = 0x00000002; public const UInt32 SE_PRIVILEGE_REMOVED = 0x00000004; public const UInt32 SE_PRIVILEGE_USED_FOR_ACCESS = 0x80000000; public static bool EnablePrivilege(string privilege) { try { int token = 0; int retVal = 0; TOKEN_PRIVILEGE TP = new TOKEN_PRIVILEGE(); LUID LD = new LUID(); retVal = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref token); retVal = LookupPrivilegeValue(null, privilege, ref LD); TP.PrivilegeCount = 1; var luidAndAtt = new LUID_AND_ATTRIBUTES(); luidAndAtt.Attributes = SE_PRIVILEGE_ENABLED; luidAndAtt.Luid = LD; TP.Privilege = luidAndAtt; retVal = AdjustTokenPrivileges(token, 0, ref TP, 1024, 0, 0); return true; } catch { return false; } } public static bool DisablePrivilege(string privilege) { try { int token = 0; int retVal = 0; TOKEN_PRIVILEGE TP = new TOKEN_PRIVILEGE(); LUID LD = new LUID(); retVal = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref token); retVal = LookupPrivilegeValue(null, privilege, ref LD); TP.PrivilegeCount = 1; // TP.Attributes should be none (not set) to disable privilege var luidAndAtt = new LUID_AND_ATTRIBUTES(); luidAndAtt.Luid = LD; TP.Privilege = luidAndAtt; retVal = AdjustTokenPrivileges(token, 0, ref TP, 1024, 0, 0); return true; } catch { return false; } } } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] public struct LUID { internal uint LowPart; internal uint HighPart; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] public struct LUID_AND_ATTRIBUTES { internal LUID Luid; internal uint Attributes; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] public struct TOKEN_PRIVILEGE { internal uint PrivilegeCount; internal LUID_AND_ATTRIBUTES Privilege; } public class Program { public const int ERROR_ACCESS_DENIED = 0x005; public const int CORSEC_E_MISSING_STRONGNAME = -2146233317; [DllImport("kernel32.dll", CharSet = CharSet.Auto)] private static extern bool SetTimeZoneInformation([In] ref TimeZoneInformation lpTimeZoneInformation); public static void Main(string[] args) { var regTimeZones = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Time Zones"); // Print out all the possible time-zones. //foreach(var subKey in regTimeZones.GetSubKeyNames()) //{ // Console.WriteLine(subKey); //} var subKey = regTimeZones.GetSubKeyNames().Where(s => s == "Atlantic Standard Time").First(); string daylightName = (string)regTimeZones.OpenSubKey(subKey).GetValue("Dlt"); string standardName = (string)regTimeZones.OpenSubKey(subKey).GetValue("Std"); byte[] tzi = (byte[])regTimeZones.OpenSubKey(subKey).GetValue("TZI"); var regTzi = new RegistryTimeZoneInformation(tzi); var tz = new TimeZoneInformation(); tz.Bias = regTzi.Bias; tz.DaylightBias = regTzi.DaylightBias; tz.StandardBias = regTzi.StandardBias; tz.DaylightDate = regTzi.DaylightDate; tz.StandardDate = regTzi.StandardDate; tz.DaylightName = daylightName; tz.StandardName = standardName; TokenPrivilegesAccess.EnablePrivilege("SeTimeZonePrivilege"); bool didSet = Program.SetTimeZoneInformation(ref tz); int lastError = Marshal.GetLastWin32Error(); TokenPrivilegesAccess.DisablePrivilege("SeTimeZonePrivilege"); // NOTE: This fixes the "Your current time zone is not recognized. Please select a valid time zone using the link below" error // only when the machine is *restarted*. // // You must have the following set in your app.manifest to request admin rights to write to this key. //  //  //  //  //  // ... var key = Registry.LocalMachine.OpenSubKey("SYSTEM\\CurrentControlSet\\Control\\TimeZoneInformation", true); key.SetValue("TimeZoneKeyName", key.GetValue("StandardName")); if (didSet) { Console.WriteLine("Success, TimeZone Set!"); } else { if (lastError == Program.ERROR_ACCESS_DENIED) { Console.WriteLine("Error: Access denied... Try running application as administrator."); } else if (lastError == Program.CORSEC_E_MISSING_STRONGNAME) { Console.WriteLine("Error: Application is not signed ... Right click the project > Signing > Check 'Sign the assembly'."); } else { Console.WriteLine("Win32Error: " + lastError + "\nHRESULT: " + Marshal.GetHRForLastWin32Error()); } } Console.ReadLine(); } } } 

TheCloudlessSky的答案适用于Windows XP:从Vista开始,要调用的函数是SetDynamicTimeZoneInformation ,否则“ 您的当前时区无法识别。请使用下面的链接选择有效时区。 ”将显示,直到下次重新启动。

奖励:调用SetDynamicTimeZoneInformation使得无需手动编辑注册表,因此没有必要以管理员身份启动程序。

这是TheCloudlessSky的片段修改后可以在Vista及更高版本上运行

 using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; using Microsoft.Win32; namespace TimeZoneTest { [StructLayoutAttribute(LayoutKind.Sequential)] public struct SystemTime { [MarshalAs(UnmanagedType.U2)] public short Year; [MarshalAs(UnmanagedType.U2)] public short Month; [MarshalAs(UnmanagedType.U2)] public short DayOfWeek; [MarshalAs(UnmanagedType.U2)] public short Day; [MarshalAs(UnmanagedType.U2)] public short Hour; [MarshalAs(UnmanagedType.U2)] public short Minute; [MarshalAs(UnmanagedType.U2)] public short Second; [MarshalAs(UnmanagedType.U2)] public short Milliseconds; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] public struct TimeZoneInformation { [MarshalAs(UnmanagedType.I4)] public int Bias; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x20)] public string StandardName; public SystemTime StandardDate; [MarshalAs(UnmanagedType.I4)] public int StandardBias; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x20)] public string DaylightName; public SystemTime DaylightDate; [MarshalAs(UnmanagedType.I4)] public int DaylightBias; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] public struct DynamicTimeZoneInformation { public int Bias; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)] public string StandardName; public SystemTime StandardDate; public int StandardBias; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)] public string DaylightName; public SystemTime DaylightDate; public int DaylightBias; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)] public string TimeZoneKeyName; [MarshalAs(UnmanagedType.U1)] public bool DynamicDaylightTimeDisabled; } [StructLayout(LayoutKind.Sequential)] public struct RegistryTimeZoneInformation { [MarshalAs(UnmanagedType.I4)] public int Bias; [MarshalAs(UnmanagedType.I4)] public int StandardBias; [MarshalAs(UnmanagedType.I4)] public int DaylightBias; public SystemTime StandardDate; public SystemTime DaylightDate; public RegistryTimeZoneInformation(TimeZoneInformation tzi) { this.Bias = tzi.Bias; this.StandardDate = tzi.StandardDate; this.StandardBias = tzi.StandardBias; this.DaylightDate = tzi.DaylightDate; this.DaylightBias = tzi.DaylightBias; } public RegistryTimeZoneInformation(byte[] bytes) { if ((bytes == null) || (bytes.Length != 0x2c)) { throw new ArgumentException("Argument_InvalidREG_TZI_FORMAT"); } this.Bias = BitConverter.ToInt32(bytes, 0); this.StandardBias = BitConverter.ToInt32(bytes, 4); this.DaylightBias = BitConverter.ToInt32(bytes, 8); this.StandardDate.Year = BitConverter.ToInt16(bytes, 12); this.StandardDate.Month = BitConverter.ToInt16(bytes, 14); this.StandardDate.DayOfWeek = BitConverter.ToInt16(bytes, 0x10); this.StandardDate.Day = BitConverter.ToInt16(bytes, 0x12); this.StandardDate.Hour = BitConverter.ToInt16(bytes, 20); this.StandardDate.Minute = BitConverter.ToInt16(bytes, 0x16); this.StandardDate.Second = BitConverter.ToInt16(bytes, 0x18); this.StandardDate.Milliseconds = BitConverter.ToInt16(bytes, 0x1a); this.DaylightDate.Year = BitConverter.ToInt16(bytes, 0x1c); this.DaylightDate.Month = BitConverter.ToInt16(bytes, 30); this.DaylightDate.DayOfWeek = BitConverter.ToInt16(bytes, 0x20); this.DaylightDate.Day = BitConverter.ToInt16(bytes, 0x22); this.DaylightDate.Hour = BitConverter.ToInt16(bytes, 0x24); this.DaylightDate.Minute = BitConverter.ToInt16(bytes, 0x26); this.DaylightDate.Second = BitConverter.ToInt16(bytes, 40); this.DaylightDate.Milliseconds = BitConverter.ToInt16(bytes, 0x2a); } } public class TokenPrivilegesAccess { [DllImport("advapi32.dll", CharSet = CharSet.Auto)] public static extern int OpenProcessToken(int ProcessHandle, int DesiredAccess, ref int tokenhandle); [DllImport("kernel32.dll", CharSet = CharSet.Auto)] public static extern int GetCurrentProcess(); [DllImport("advapi32.dll", CharSet = CharSet.Auto)] public static extern int LookupPrivilegeValue(string lpsystemname, string lpname, [MarshalAs(UnmanagedType.Struct)] ref LUID lpLuid); [DllImport("advapi32.dll", CharSet = CharSet.Auto)] public static extern int AdjustTokenPrivileges(int tokenhandle, int disableprivs, [MarshalAs(UnmanagedType.Struct)]ref TOKEN_PRIVILEGE Newstate, int bufferlength, int PreivousState, int Returnlength); public const int TOKEN_ASSIGN_PRIMARY = 0x00000001; public const int TOKEN_DUPLICATE = 0x00000002; public const int TOKEN_IMPERSONATE = 0x00000004; public const int TOKEN_QUERY = 0x00000008; public const int TOKEN_QUERY_SOURCE = 0x00000010; public const int TOKEN_ADJUST_PRIVILEGES = 0x00000020; public const int TOKEN_ADJUST_GROUPS = 0x00000040; public const int TOKEN_ADJUST_DEFAULT = 0x00000080; public const UInt32 SE_PRIVILEGE_ENABLED_BY_DEFAULT = 0x00000001; public const UInt32 SE_PRIVILEGE_ENABLED = 0x00000002; public const UInt32 SE_PRIVILEGE_REMOVED = 0x00000004; public const UInt32 SE_PRIVILEGE_USED_FOR_ACCESS = 0x80000000; public static bool EnablePrivilege(string privilege) { try { int token = 0; int retVal = 0; TOKEN_PRIVILEGE TP = new TOKEN_PRIVILEGE(); LUID LD = new LUID(); retVal = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref token); retVal = LookupPrivilegeValue(null, privilege, ref LD); TP.PrivilegeCount = 1; var luidAndAtt = new LUID_AND_ATTRIBUTES(); luidAndAtt.Attributes = SE_PRIVILEGE_ENABLED; luidAndAtt.Luid = LD; TP.Privilege = luidAndAtt; retVal = AdjustTokenPrivileges(token, 0, ref TP, 1024, 0, 0); return true; } catch { return false; } } public static bool DisablePrivilege(string privilege) { try { int token = 0; int retVal = 0; TOKEN_PRIVILEGE TP = new TOKEN_PRIVILEGE(); LUID LD = new LUID(); retVal = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref token); retVal = LookupPrivilegeValue(null, privilege, ref LD); TP.PrivilegeCount = 1; // TP.Attributes should be none (not set) to disable privilege var luidAndAtt = new LUID_AND_ATTRIBUTES(); luidAndAtt.Luid = LD; TP.Privilege = luidAndAtt; retVal = AdjustTokenPrivileges(token, 0, ref TP, 1024, 0, 0); return true; } catch { return false; } } } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] public struct LUID { internal uint LowPart; internal uint HighPart; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] public struct LUID_AND_ATTRIBUTES { internal LUID Luid; internal uint Attributes; } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] public struct TOKEN_PRIVILEGE { internal uint PrivilegeCount; internal LUID_AND_ATTRIBUTES Privilege; } public class Program { public const int ERROR_ACCESS_DENIED = 0x005; public const int CORSEC_E_MISSING_STRONGNAME = -2146233317; [DllImport("kernel32.dll", CharSet = CharSet.Auto)] private static extern bool SetTimeZoneInformation([In] ref TimeZoneInformation lpTimeZoneInformation); [DllImport("kernel32.dll", CharSet = CharSet.Auto)] private static extern bool SetDynamicTimeZoneInformation([In] ref DynamicTimeZoneInformation lpTimeZoneInformation); public static void Main(string[] args) { var regTimeZones = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Time Zones"); // Print out all the possible time-zones. //foreach(var subKey in regTimeZones.GetSubKeyNames()) //{ // Console.WriteLine(subKey); //} var subKey = regTimeZones.GetSubKeyNames().Where(s => s == "Atlantic Standard Time").First(); string daylightName = (string)regTimeZones.OpenSubKey(subKey).GetValue("Dlt"); string standardName = (string)regTimeZones.OpenSubKey(subKey).GetValue("Std"); byte[] tzi = (byte[])regTimeZones.OpenSubKey(subKey).GetValue("TZI"); var regTzi = new RegistryTimeZoneInformation(tzi); TokenPrivilegesAccess.EnablePrivilege("SeTimeZonePrivilege"); bool didSet; if (Environment.OSVersion.Version.Major < 6) { var tz = new TimeZoneInformation(); tz.Bias = regTzi.Bias; tz.DaylightBias = regTzi.DaylightBias; tz.StandardBias = regTzi.StandardBias; tz.DaylightDate = regTzi.DaylightDate; tz.StandardDate = regTzi.StandardDate; tz.DaylightName = daylightName; tz.StandardName = standardName; didSet = Program.SetTimeZoneInformation(ref tz); } else { var tz = new DynamicTimeZoneInformation(); tz.Bias = regTzi.Bias; tz.DaylightBias = regTzi.DaylightBias; tz.StandardBias = regTzi.StandardBias; tz.DaylightDate = regTzi.DaylightDate; tz.StandardDate = regTzi.StandardDate; tz.DaylightName = daylightName; tz.StandardName = standardName; tz.TimeZoneKeyName = subKey; tz.DynamicDaylightTimeDisabled = false; didSet = Program.SetDynamicTimeZoneInformation(ref tz); } int lastError = Marshal.GetLastWin32Error(); TokenPrivilegesAccess.DisablePrivilege("SeTimeZonePrivilege"); if (didSet) { Console.WriteLine("Success, TimeZone Set!"); } else { if (lastError == Program.ERROR_ACCESS_DENIED) { Console.WriteLine("Error: Access denied... Try running application as administrator."); } else if (lastError == Program.CORSEC_E_MISSING_STRONGNAME) { Console.WriteLine("Error: Application is not signed ... Right click the project > Signing > Check 'Sign the assembly'."); } else { Console.WriteLine("Win32Error: " + lastError + "\nHRESULT: " + Marshal.GetHRForLastWin32Error()); } } Console.ReadLine(); } } }