.NET에서 시스템 시간대를 설정하십시오
https://stackoverflow.com/questions/808736
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settimezoneInformation을 통해 시스템 시간대를 설정하기 위해 .NET에서 TimeZoneInfo 필드를 사용하고 Interop 코드를 실행하는 코드가 있습니까? 나는 그것이 기본적으로 TimezoneInfo 멤버를 Struct 멤버에 매핑하고 있다는 것을 알고 있지만, 필드가 정확히 매핑되는 방법 또는 편견을 넘어서 신경을 써야 할 것인지는 분명하지 않습니다.
해결책
이것이 당신이 찾고있는 것인지 모르겠지만 Win32 기능을 사용하여 시간대 정보를 얻고 설정하는 방법에 대한 정보가 있습니다.
http://www.pinvoke.net/default.aspx/kernel32/gettimezoneinformation.html
다음 샘플 코드의 주요 부분은이 사이트에서 가져옵니다. 방금 gettimezone () 메소드를 호출하기 위해 몇 줄을 추가하고 SystemTime Struct의 액세스 수정 자에서 작은 오류를 수정하여 샘플을 작동 시켰습니다.
도움이 되었기를 바랍니다...
using System;
using System.Runtime.InteropServices;
namespace Stackoverflow
{
class TimeZoneFunctionality
{
/// <summary>
/// [Win32 API call]
/// The GetTimeZoneInformation function retrieves the current time-zone parameters.
/// These parameters control the translations between Coordinated Universal Time (UTC)
/// and local time.
/// </summary>
/// <param name="lpTimeZoneInformation">[out] Pointer to a TIME_ZONE_INFORMATION structure to receive the current time-zone parameters.</param>
/// <returns>
/// If the function succeeds, the return value is one of the following values.
/// <list type="table">
/// <listheader>
/// <term>Return code/value</term>
/// <description>Description</description>
/// </listheader>
/// <item>
/// <term>TIME_ZONE_ID_UNKNOWN == 0</term>
/// <description>
/// The system cannot determine the current time zone. This error is also returned if you call the SetTimeZoneInformation function and supply the bias values but no transition dates.
/// This value is returned if daylight saving time is not used in the current time zone, because there are no transition dates.
/// </description>
/// </item>
/// <item>
/// <term>TIME_ZONE_ID_STANDARD == 1</term>
/// <description>
/// The system is operating in the range covered by the StandardDate member of the TIME_ZONE_INFORMATION structure.
/// </description>
/// </item>
/// <item>
/// <term>TIME_ZONE_ID_DAYLIGHT == 2</term>
/// <description>
/// The system is operating in the range covered by the DaylightDate member of the TIME_ZONE_INFORMATION structure.
/// </description>
/// </item>
/// </list>
/// If the function fails, the return value is TIME_ZONE_ID_INVALID. To get extended error information, call GetLastError.
/// </returns>
[DllImport( "kernel32.dll", CharSet = CharSet.Auto )]
private static extern int GetTimeZoneInformation( out TimeZoneInformation lpTimeZoneInformation );
/// <summary>
/// [Win32 API call]
/// The SetTimeZoneInformation function sets the current time-zone parameters.
/// These parameters control translations from Coordinated Universal Time (UTC)
/// to local time.
/// </summary>
/// <param name="lpTimeZoneInformation">[in] Pointer to a TIME_ZONE_INFORMATION structure that contains the time-zone parameters to set.</param>
/// <returns>
/// If the function succeeds, the return value is nonzero.
/// If the function fails, the return value is zero. To get extended error information, call GetLastError.
/// </returns>
[DllImport( "kernel32.dll", CharSet = CharSet.Auto )]
private static extern bool SetTimeZoneInformation( [In] ref TimeZoneInformation lpTimeZoneInformation );
/// <summary>
/// The SystemTime structure represents a date and time using individual members
/// for the month, day, year, weekday, hour, minute, second, and millisecond.
/// </summary>
[StructLayoutAttribute( LayoutKind.Sequential )]
public struct SystemTime
{
public short year;
public short month;
public short dayOfWeek;
public short day;
public short hour;
public short minute;
public short second;
public short milliseconds;
}
/// <summary>
/// The TimeZoneInformation structure specifies information specific to the time zone.
/// </summary>
[StructLayout( LayoutKind.Sequential, CharSet = CharSet.Unicode )]
public struct TimeZoneInformation
{
/// <summary>
/// Current bias for local time translation on this computer, in minutes. The bias is the difference, in minutes, between Coordinated Universal Time (UTC) and local time. All translations between UTC and local time are based on the following formula:
/// <para>UTC = local time + bias</para>
/// <para>This member is required.</para>
/// </summary>
public int bias;
/// <summary>
/// Pointer to a null-terminated string associated with standard time. For example, "EST" could indicate Eastern Standard Time. The string will be returned unchanged by the GetTimeZoneInformation function. This string can be empty.
/// </summary>
[MarshalAs( UnmanagedType.ByValTStr, SizeConst = 32 )]
public string standardName;
/// <summary>
/// A SystemTime structure that contains a date and local time when the transition from daylight saving time to standard time occurs on this operating system. If the time zone does not support daylight saving time or if the caller needs to disable daylight saving time, the wMonth member in the SystemTime structure must be zero. If this date is specified, the DaylightDate value in the TimeZoneInformation structure must also be specified. Otherwise, the system assumes the time zone data is invalid and no changes will be applied.
/// <para>To select the correct day in the month, set the wYear member to zero, the wHour and wMinute members to the transition time, the wDayOfWeek member to the appropriate weekday, and the wDay member to indicate the occurence of the day of the week within the month (first through fifth).</para>
/// <para>Using this notation, specify the 2:00a.m. on the first Sunday in April as follows: wHour = 2, wMonth = 4, wDayOfWeek = 0, wDay = 1. Specify 2:00a.m. on the last Thursday in October as follows: wHour = 2, wMonth = 10, wDayOfWeek = 4, wDay = 5.</para>
/// </summary>
public SystemTime standardDate;
/// <summary>
/// Bias value to be used during local time translations that occur during standard time. This member is ignored if a value for the StandardDate member is not supplied.
/// <para>This value is added to the value of the Bias member to form the bias used during standard time. In most time zones, the value of this member is zero.</para>
/// </summary>
public int standardBias;
/// <summary>
/// Pointer to a null-terminated string associated with daylight saving time. For example, "PDT" could indicate Pacific Daylight Time. The string will be returned unchanged by the GetTimeZoneInformation function. This string can be empty.
/// </summary>
[MarshalAs( UnmanagedType.ByValTStr, SizeConst = 32 )]
public string daylightName;
/// <summary>
/// A SystemTime structure that contains a date and local time when the transition from standard time to daylight saving time occurs on this operating system. If the time zone does not support daylight saving time or if the caller needs to disable daylight saving time, the wMonth member in the SystemTime structure must be zero. If this date is specified, the StandardDate value in the TimeZoneInformation structure must also be specified. Otherwise, the system assumes the time zone data is invalid and no changes will be applied.
/// <para>To select the correct day in the month, set the wYear member to zero, the wHour and wMinute members to the transition time, the wDayOfWeek member to the appropriate weekday, and the wDay member to indicate the occurence of the day of the week within the month (first through fifth).</para>
/// </summary>
public SystemTime daylightDate;
/// <summary>
/// Bias value to be used during local time translations that occur during daylight saving time. This member is ignored if a value for the DaylightDate member is not supplied.
/// <para>This value is added to the value of the Bias member to form the bias used during daylight saving time. In most time zones, the value of this member is –60.</para>
/// </summary>
public int daylightBias;
}
/// <summary>
/// Sets new time-zone information for the local system.
/// </summary>
/// <param name="tzi">Struct containing the time-zone parameters to set.</param>
public static void SetTimeZone( TimeZoneInformation tzi )
{
// set local system timezone
SetTimeZoneInformation( ref tzi );
}
/// <summary>
/// Gets current timezone information for the local system.
/// </summary>
/// <returns>Struct containing the current time-zone parameters.</returns>
public static TimeZoneInformation GetTimeZone()
{
// create struct instance
TimeZoneInformation tzi;
// retrieve timezone info
int currentTimeZone = GetTimeZoneInformation( out tzi );
return tzi;
}
/// <summary>
/// Oversimplyfied method to test the GetTimeZone functionality
/// </summary>
/// <param name="args">the usual stuff</param>
static void Main( string[] args )
{
TimeZoneInformation timeZoneInformation = GetTimeZone();
return;
}
}
}
시간대 정보를 설정하기 전에 프로세스에 적절한 권한이 있는지 확인해야합니다. SettimezoneInformation의 MSDN 페이지에 언급 된 바와 같이 :
응용 프로그램에는이 기능이 성공하려면 SE_TIME_ZONE_NAME 권한이 있어야합니다. 이 권한은 기본적으로 비활성화됩니다.
다음은이 권한을 활성화하기위한 샘플 코드입니다.
public class AdjustTokenPrivilegesFunctionality
{
[StructLayout(LayoutKind.Sequential)]
private struct LUID
{
public uint LowPart;
public int HighPart;
}
[StructLayout(LayoutKind.Sequential)]
private struct LUID_AND_ATTRIBUTES
{
public LUID Luid;
public UInt32 Attributes;
}
private struct TOKEN_PRIVILEGES
{
public UInt32 PrivilegeCount;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)]
public LUID_AND_ATTRIBUTES[] Privileges;
}
public const string SE_TIME_ZONE_NAME = "SeTimeZonePrivilege";
public const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;
public const int TOKEN_QUERY = 0x00000008;
public const int SE_PRIVILEGE_ENABLED = 0x00000002;
[DllImport("advapi32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool AdjustTokenPrivileges(IntPtr TokenHandle, bool DisableAllPrivileges, ref TOKEN_PRIVILEGES NewState, UInt32 Zero, IntPtr Null1, IntPtr Null2);
[DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Auto)]
private static extern int OpenProcessToken(int ProcessHandle, int DesiredAccess, out IntPtr tokenhandle);
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern int GetCurrentProcess();
[DllImport("advapi32.dll", CharSet = CharSet.Auto)]
private static extern int LookupPrivilegeValue(string lpsystemname, string lpname, [MarshalAs(UnmanagedType.Struct)] ref LUID lpLuid);
static void EnableSetTimeZonePrivileges()
{
// We must add the set timezone privilege to the process token or SetTimeZoneInformation will fail
IntPtr token;
int retval = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, out token);
Assert.IsTrue(retval != 0, String.Format("OpenProcessToken failed. GetLastError: {0}", Marshal.GetLastWin32Error()));
LUID luid = new LUID();
retval = LookupPrivilegeValue(null, SE_TIME_ZONE_NAME, ref luid);
Assert.IsTrue(retval != 0, String.Format("LookupPrivilegeValue failed. GetLastError: {0}", Marshal.GetLastWin32Error()));
TOKEN_PRIVILEGES tokenPrivs = new TOKEN_PRIVILEGES();
tokenPrivs.PrivilegeCount = 1;
tokenPrivs.Privileges = new LUID_AND_ATTRIBUTES[1];
tokenPrivs.Privileges[0].Luid = luid;
tokenPrivs.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Assert.IsTrue(AdjustTokenPrivileges(token, false, ref tokenPrivs, 0, IntPtr.Zero, IntPtr.Zero), String.Format("AdjustTokenPrivileges failed. GetLastError: {0}", Marshal.GetLastWin32Error()));
}
}
다른 팁
이 작업을 수행하는 또 다른 방법이 있습니다.
public void SetSystemTimeZone(string timeZoneId)
{
var process = Process.Start(new ProcessStartInfo
{
FileName = "tzutil.exe",
Arguments = "/s \"" + timeZoneId + "\"",
UseShellExecute = false,
CreateNoWindow = true
});
if (process != null)
{
process.WaitForExit();
TimeZoneInfo.ClearCachedData();
}
}
이 방법을 호출하고 전달하십시오 TimeZoneInfo.Id 당신이 설정하고 싶은 것. 예를 들어:
SetSystemTimeZone("Eastern Standard Time");
이 코드를 실행하기 위해 특별 권한이 필요하지 않습니다. tzutil.exe 이미 적절한 권한이 있습니다.
Microsoft의 지원 사이트에서 VB를 사용하여이를 수행하기위한 기사가 있습니다.
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