/// <summary>
/// <para>Converts a given <see cref='System.DateTime'/> object to DMTF format.</para>
///
/// </summary>
/// <param name='date'>A <see cref='System.DateTime'/> object representing the datetime to be converted to DMTF datetime.</param>
/// <returns>
/// <para>A string that represents the DMTF datetime for the given DateTime object.</para>
/// </returns>
/// <remarks>
/// <para> Date and time in WMI is represented in DMTF datetime format. This format is explained in WMI SDK documentation.
/// The DMTF datetime string represented will be with respect to the UTC offset of the
/// current timezone. The lowest precision in DMTF is microseconds and
/// in <see cref='System.DateTime'/> is Ticks , which is equivalent to 100 of nanoseconds.
/// During conversion these Ticks are converted to microseconds and rounded
/// off to the the nearest microsecond.
/// </para>
/// </remarks>
/// <example>
/// <code lang='C#'>
/// // Convert the current time in System.DateTime to DMTF format
/// string dmtfDateTime = ManagementDateTimeConverter.ToDmtfDateTime(DateTime.Now);
/// </code>
/// <code lang='VB'>
/// ' Convert the current time in System.DateTime to DMTF format
/// Dim dmtfDateTime as String = ManagementDateTimeConverter.ToDmtfDateTime(DateTime.Now)
/// </code>
/// </example>
public static string ToDmtfDateTime(DateTime date)
{
string UtcString = String.Empty;
// Fill up the UTC field in the DMTF date with the current
// zones UTC value
System.TimeZone curZone = System.TimeZone.CurrentTimeZone;
System.TimeSpan tickOffset = curZone.GetUtcOffset(date);
long OffsetMins = (tickOffset.Ticks / System.TimeSpan.TicksPerMinute);
IFormatProvider frmInt32 = (IFormatProvider)CultureInfo.InvariantCulture.GetFormat(typeof(System.Int32));
// If the offset is more than that what can be specified in DMTF format, then
// convert the date to UniversalTime
if (Math.Abs(OffsetMins) > MAXSIZE_UTC_DMTF)
{
date = date.ToUniversalTime();
UtcString = "+000";
}
else
if ((tickOffset.Ticks >= 0))
{
UtcString = "+" + ((tickOffset.Ticks / System.TimeSpan.TicksPerMinute)).ToString(frmInt32).PadLeft(3, '0');
}
else
{
string strTemp = OffsetMins.ToString(frmInt32);
UtcString = "-" + strTemp.Substring(1, strTemp.Length - 1).PadLeft(3, '0');
}
string dmtfDateTime = date.Year.ToString(frmInt32).PadLeft(4, '0');
dmtfDateTime = (dmtfDateTime + date.Month.ToString(frmInt32).PadLeft(2, '0'));
dmtfDateTime = (dmtfDateTime + date.Day.ToString(frmInt32).PadLeft(2, '0'));
dmtfDateTime = (dmtfDateTime + date.Hour.ToString(frmInt32).PadLeft(2, '0'));
dmtfDateTime = (dmtfDateTime + date.Minute.ToString(frmInt32).PadLeft(2, '0'));
dmtfDateTime = (dmtfDateTime + date.Second.ToString(frmInt32).PadLeft(2, '0'));
dmtfDateTime = (dmtfDateTime + ".");
// Construct a DateTime with with the precision to Second as same as the passed DateTime and so get
// the ticks difference so that the microseconds can be calculated
DateTime dtTemp = new DateTime(date.Year, date.Month, date.Day, date.Hour, date.Minute, date.Second, 0);
System.Int64 microsec = ((date.Ticks - dtTemp.Ticks) * 1000) / System.TimeSpan.TicksPerMillisecond;
// fill the microseconds field
String strMicrosec = microsec.ToString((IFormatProvider)CultureInfo.InvariantCulture.GetFormat(typeof(System.Int64)));
if (strMicrosec.Length > 6)
{
strMicrosec = strMicrosec.Substring(0, 6);
}
dmtfDateTime = dmtfDateTime + strMicrosec.PadLeft(6, '0');
// adding the UTC offset
dmtfDateTime = dmtfDateTime + UtcString;
return(dmtfDateTime);
}
/// <summary>
/// Returns the abbreviated name of the specified time zone if it has one,
/// otherwise the full standard name. This method can be used to get a
/// string representation of System.TimeZone consistent with that of Type.TimeZone.
/// </summary>
public static string ToString(System.TimeZone timeZone)
{
if (timeZone is TimeZone)
{
return(timeZone.ToString());
}
string abbrev = TimeZoneInfo.FullNameToAbbreviation(timeZone.StandardName);
return(abbrev == null ? timeZone.StandardName : abbrev);
}
private void m_settings_SettingChanged(object sender, SettingChangedEventArgs e)
{
if (e.SettingName == EventViewerSettings.SettingDisplayTimeZone)
{
m_timeZone = m_settings.DisplayTimeZone;
if (m_timePropertyWrapper != null)
{
m_timePropertyWrapper.SetValue(LogForm.GetEventMessageTime(m_eventMessage, m_timeZone));
panes.gridDetails.Invalidate(true); // Must be called to refresh the grid immediately.
}
}
}
/// <summary>
/// Returns a DateTime equivalent to the specified System.DateTime. You must also
/// specify a time zone, because System.DateTime may represent times in the local
/// time zone as well as in UTC.
/// </summary>
public static DateTime FromSystemDateTime(System.DateTime dateTime,
System.TimeZone timeZone)
{
System.DateTime baseValue = new System.DateTime(dateTime.Year,
dateTime.Month, dateTime.Day, dateTime.Hour, dateTime.Minute,
dateTime.Second, dateTime.Millisecond);
int diffTicks = (int)(dateTime.Ticks - baseValue.Ticks);
int microseconds = diffTicks / 10;
int nanoseconds = (diffTicks % 10) * 100;
return(new DateTime(baseValue, microseconds, nanoseconds, timeZone, false));
}
public DateTime ToTimeZone(System.TimeZone timeZone)
{
try
{
return(new DateTime(Universal, m_nanosecond, timeZone, true));
}
catch (System.ArgumentOutOfRangeException ex)
{
throw new System.InvalidOperationException("The DateTime '" + ToString() + "' cannot be converted to time zone '"
+ Type.TimeZone.ToString(timeZone) + "', because the result would be"
+ " less than DateTime.MinValue or greater than DateTime.MaxValue.", ex);
}
}
public void Initialise(LogForm parentForm)
{
// Apply settings.
m_settings = ((MainForm)MdiParent).Settings;
m_settings.DetailsWindow.ApplyToWindow(this);
panes.SplitRatioTop = m_settings.DetailsSplitterRatioTop;
panes.SplitRatioBottom = m_settings.DetailsSplitterRatioBottom;
panes.gridDetails.EditorDialogSettings = m_settings.GenericEditorWindow;
panes.gridParameters.EditorDialogSettings = m_settings.GenericEditorWindow;
m_timeZone = m_settings.DisplayTimeZone;
m_parentForm = parentForm;
m_settings.SettingChanged += m_settings_SettingChanged;
m_initialised = true;
}
/// <summary>
/// Constructor for recreating object during de-serialization
/// </summary>
/// <param name="info"></param>
/// <param name="context"></param>
private DateTime(SerializationInfo info, StreamingContext context)
{
m_universal = info.GetDateTime("m_universal");
m_nanosecond = info.GetInt32("m_nanosecond");
bool isCurrentTimeZone = info.GetBoolean("isCurrentTimeZone");
if (isCurrentTimeZone)
{
m_timeZone = System.TimeZone.CurrentTimeZone;
}
else
{
m_timeZone = (System.TimeZone)info.GetValue("m_timeZone", typeof(System.TimeZone));
}
Debug.Assert(m_timeZone != null, "m_timeZone != null");
m_base = m_timeZone.ToLocalTime(m_universal);
}
// This constructor is for cloning. The nanosecond parameter is the total of microseconds and
// nanoseconds (ie. 0 to 1000000).
private DateTime(System.DateTime baseValue, int nanosecond, System.TimeZone timeZone,
bool isUniversalTime)
{
Debug.Assert(nanosecond >= 0 && nanosecond < 1000000, "The nanosecond value is invalid -"
+ " an exception should be thrown immediately after this.");
if (isUniversalTime)
{
m_universal = baseValue;
m_base = timeZone.ToLocalTime(baseValue);
}
else
{
m_base = baseValue;
m_universal = timeZone.ToUniversalTime(baseValue);
}
m_nanosecond = nanosecond;
m_timeZone = timeZone;
}
/// <summary>
/// If <c>isUniversalTime</c> is true then <c>baseValue</c> is taken to represent universal time.
/// Otherwise it's taken to represent time in the time zone specified by <c>timeZone</c>.
/// Universal time should be passed in whenever possible to avoid ambiguities
/// during the hour that occurs twice when changing from daylight time to standard
/// time.
/// </summary>
private DateTime(System.DateTime baseValue, int microsecond, int nanosecond,
System.TimeZone timeZone, bool isUniversalTime)
: this(baseValue, microsecond *DateTimeHelper.Microseconds2Nanoseconds + nanosecond,
timeZone, isUniversalTime)
{
const string method = ".ctor";
// Check that microsecond and nanosecond are valid values - the rest have
// already been checked by System.DateTime.
if (microsecond < DateTimeHelper.MinMicrosecond || microsecond > DateTimeHelper.MaxMicrosecond)
{
throw new ParameterOutOfRangeException(typeof(DateTime), method,
"microsecond", microsecond, DateTimeHelper.MinMicrosecond, DateTimeHelper.MaxMicrosecond);
}
if (nanosecond < DateTimeHelper.MinNanosecond || nanosecond > DateTimeHelper.MaxNanosecond)
{
throw new ParameterOutOfRangeException(typeof(DateTime), method,
"nanosecond", nanosecond, DateTimeHelper.MinNanosecond, DateTimeHelper.MaxNanosecond);
}
}
/// <summary>
/// <para>Converts a given DMTF datetime to <see cref='System.DateTime'/> object. The returned DateTime will be in the
/// current TimeZone of the system.</para>
/// </summary>
/// <param name='dmtfDate'>A string representing the datetime in DMTF format.</param>
/// <returns>
/// <para>A <see cref='System.DateTime'/> object that represents the given DMTF datetime.</para>
/// </returns>
/// <remarks>
/// <para> Date and time in WMI is represented in DMTF datetime format. This format is explained in WMI SDK documentation.
/// DMTF datetime string has an UTC offset which this datetime string represents.
/// During conversion to <see cref='System.DateTime'/>, UTC offset is used to convert the date to the
/// current timezone. According to DMTF format a particular field can be represented by the character
/// '*'. This will be converted to the MinValue of this field that can be represented in <see cref='System.DateTime'/>.
/// </para>
/// </remarks>
/// <example>
/// <code lang='C#'>
/// // Convert a DMTF datetime to System.DateTime
/// DateTime date = ManagementDateTimeConverter.ToDateTime("20020408141835.999999-420");
/// </code>
/// <code lang='VB'>
/// ' Convert a DMTF datetime to System.DateTime
/// Dim date as DateTime = ManagementDateTimeConverter.ToDateTime("20020408141835.999999-420")
/// </code>
/// </example>
public static DateTime ToDateTime(string dmtfDate)
{
int year = DateTime.MinValue.Year;
int month = DateTime.MinValue.Month;
int day = DateTime.MinValue.Day;
int hour = DateTime.MinValue.Hour;
int minute = DateTime.MinValue.Minute;
int second = DateTime.MinValue.Second;
int millisec = 0;
string dmtf = dmtfDate;
DateTime datetime = DateTime.MinValue;
// If the string passed is empty or null then throw
// an exception
if (dmtf == null)
{
throw new System.ArgumentOutOfRangeException("dmtfDate");
}
if (dmtf.Length == 0)
{
throw new System.ArgumentOutOfRangeException("dmtfDate");
}
// if the length of the string is not equal to the
// standard length of the DMTF datetime then throw an exception
if (dmtf.Length != SIZEOFDMTFDATETIME)
{
throw new System.ArgumentOutOfRangeException("dmtfDate");
}
IFormatProvider frmInt32 = (IFormatProvider)CultureInfo.InvariantCulture.GetFormat(typeof(System.Int32));
System.Int64 ticks = 0;
try
{
string tempString = System.String.Empty;
tempString = dmtf.Substring(0, 4);
if (("****" != tempString))
{
year = System.Int32.Parse(tempString, frmInt32);
}
tempString = dmtf.Substring(4, 2);
if (("**" != tempString))
{
month = System.Int32.Parse(tempString, frmInt32);
}
tempString = dmtf.Substring(6, 2);
if (("**" != tempString))
{
day = System.Int32.Parse(tempString, frmInt32);
}
tempString = dmtf.Substring(8, 2);
if (("**" != tempString))
{
hour = System.Int32.Parse(tempString, frmInt32);
}
tempString = dmtf.Substring(10, 2);
if (("**" != tempString))
{
minute = System.Int32.Parse(tempString, frmInt32);
}
tempString = dmtf.Substring(12, 2);
if (("**" != tempString))
{
second = System.Int32.Parse(tempString, frmInt32);
}
tempString = dmtf.Substring(15, 6);
if (("******" != tempString))
{
ticks = (System.Int64.Parse(tempString, (IFormatProvider)CultureInfo.InvariantCulture.GetFormat(typeof(System.Int64)))) * (System.TimeSpan.TicksPerMillisecond / 1000);
}
if (year < 0 || month < 0 || day < 0 || hour < 0 || minute < 0 || second < 0 || ticks < 0)
{
throw new System.ArgumentOutOfRangeException("dmtfDate");
}
}
catch
{
throw new System.ArgumentOutOfRangeException("dmtfDate");
}
// Construct a new System.DateTime object
datetime = new System.DateTime(year, month, day, hour, minute, second, millisec);
// Then add the ticks calculated from the microseconds
datetime = datetime.AddTicks(ticks);
// Adjust the UTC time to reflect the current zone time
System.TimeZone curZone = System.TimeZone.CurrentTimeZone;
System.TimeSpan tickOffset = curZone.GetUtcOffset(datetime);
long OffsetMins = tickOffset.Ticks / System.TimeSpan.TicksPerMinute;
// Adjusting the DateTime for the current UTC
int UTCOffset = 0;
string tempString1 = dmtf.Substring(22, 3);
long OffsetToBeAdjusted = 0;
if (("***" != tempString1))
{
tempString1 = dmtf.Substring(21, 4);
try
{
UTCOffset = System.Int32.Parse(tempString1, frmInt32);
}
catch
{
throw new System.ArgumentOutOfRangeException();
}
OffsetToBeAdjusted = UTCOffset - OffsetMins;
// We have to substract the minutes from the time
datetime = datetime.AddMinutes(OffsetToBeAdjusted * -1);
}
return(datetime);
}
public void setTimeZone(System.TimeZone tz)
{
this.m_tz = tz;
}
public DateTime(int year, int month, int day, System.TimeZone timeZone)
: this(new System.DateTime(year, month, day), 0, 0, timeZone, false)
{
}
public DateTime(int year, int month, int day, int hour, int minute, int second,
System.TimeZone timeZone)
: this(new System.DateTime(year, month, day, hour, minute, second), 0, 0,
timeZone, false)
{
}
public DateTime(Date date, TimeOfDay time, System.TimeZone timeZone)
: this(date.Year, date.Month, date.Day, time.Hour, time.Minute, time.Second,
time.Millisecond, time.Microsecond, time.Nanosecond, timeZone)
{
}
