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 == "Eastern 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");
Program.SetTimeZoneInformation(ref tz);
int lastError = Marshal.GetLastWin32Error();
TokenPrivilegesAccess.DisablePrivilege("SeTimeZonePrivilege");
if (lastError == 0)
{
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();
}
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.
// <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
// <security>
// <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
// <requestedExecutionLevel level="requireAdministrator" uiAccess="false" />
// </requestedPrivileges>
// ...
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();
}
public static void ChangeTimeZone()
{
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 == "W. Europe 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 = TimeZoneControl.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 = TimeZoneControl.SetDynamicTimeZoneInformation(ref tz);
}
int lastError = Marshal.GetLastWin32Error();
TokenPrivilegesAccess.DisablePrivilege("SeTimeZonePrivilege");
if (didSet)
{
Console.WriteLine("Success, TimeZone Set!");
}
else
{
if (lastError == TimeZoneControl.ERROR_ACCESS_DENIED)
{
//Console.WriteLine("Error: Access denied... Try running application as administrator.");
}
else if (lastError == TimeZoneControl.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();
}