DateTimeOffset.ToUniversalTime Method
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Converts the current DateTimeOffset object to a DateTimeOffset value that represents the Coordinated Universal Time (UTC).
Assembly: mscorlib (in mscorlib.dll)
Return Value
Type: System.DateTimeOffsetAn object that represents the date and time of the current DateTimeOffset object converted to Coordinated Universal Time (UTC).
This method returns a DateTimeOffset object whose Offset property is set to zero.
Both the value of the current DateTimeOffset object and the value of the DateTimeOffset object returned by the method call represent the same point in time. That is, if both are passed to the DateTimeOffset.Equals(DateTimeOffset, DateTimeOffset) method, the method will return true.
The following example calls the ToUniversalTime method to convert a local time and several other times to Coordinated Universal Time (UTC).
Dim localTime, otherTime, universalTime As DateTimeOffset ' Define local time in local time zone localTime = New DateTimeOffset(#6/15/2007 12:00:00 PM#) outputBlock.Text += String.Format("Local time: {0}", localTime) & vbCrLf outputBlock.Text &= vbCrLf ' Convert local time to offset 0 and assign to otherTime otherTime = localTime.ToOffset(TimeSpan.Zero) outputBlock.Text += String.Format("Other time: {0}", otherTime) & vbCrLf outputBlock.Text += String.Format("{0} = {1}: {2}", _ localTime, otherTime, _ localTime.Equals(otherTime)) + vbCrLf outputBlock.Text += String.Format("{0} exactly equals {1}: {2}", _ localTime, otherTime, _ localTime.EqualsExact(otherTime)) + vbCrLf outputBlock.Text &= vbCrLf ' Convert other time to UTC universalTime = localTime.ToUniversalTime() outputBlock.Text += String.Format("Universal time: {0}", universalTime) & vbCrLf outputBlock.Text += String.Format("{0} = {1}: {2}", _ otherTime, universalTime, _ universalTime.Equals(otherTime)) + vbCrLf outputBlock.Text += String.Format("{0} exactly equals {1}: {2}", _ otherTime, universalTime, _ universalTime.EqualsExact(otherTime)) + vbCrLf outputBlock.Text &= vbCrLf ' The example produces the following output: ' Local time: 6/15/2007 12:00:00 PM -07:00 ' ' Other time: 6/15/2007 7:00:00 PM +00:00 ' 6/15/2007 12:00:00 PM -07:00 = 6/15/2007 7:00:00 PM +00:00: True ' 6/15/2007 12:00:00 PM -07:00 exactly equals 6/15/2007 7:00:00 PM +00:00: False ' ' Universal time: 6/15/2007 7:00:00 PM +00:00 ' 6/15/2007 7:00:00 PM +00:00 = 6/15/2007 7:00:00 PM +00:00: True ' 6/15/2007 7:00:00 PM +00:00 exactly equals 6/15/2007 7:00:00 PM +00:00: True