System Namespace TimeZone Structure
Returns the coordinated universal time ( UTC ) offset for the specified local time.
[ VB ]
Public MustOverride Function GetUtcOffset ( _
time As DateTime _
) As TimeSpan
[ C# ]
public abstract TimeSpan GetUtcOffset (
DateTime time
)
[ C++ ]
public:
virtual TimeSpan GetUtcOffset (
DateTime time
) abstract
[ JScript ]
public abstract function GetUtcOffset (
time : DateTime
) : TimeSpan
- time
- The local date and time.
The UTC offset from time, measured in ticks.
Coordinated universal time ( UTC ) was previously known as Greenwich Mean Time (GMT). Local time is the date and time on the computer you are using. Offset is the difference between local time and UTC. That is:
local time = UTC + offset
time must be in the Gregorian calendar and the time zone represented by this instance. If time is in daylight saving time, this method returns the UTC offset to the daylight saving time zone. This method obtains the daylight saving time rule from the system.
For example, in the United States Pacific Standard time zone, which has -8 hours of offset, GetUtcOffset ( new DateTime ( 1999, 1, 1 ) ) returns -288000000000.
The following example gets the value returned by the GetUtcOffset method for the current time zone set on the Web server.
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The following examples show how to determine and set the current local time of a user's browser based on the current time zone setting on the Web server.
This is done basically by calling a client-side JavaScript function to determine the current browser's UTC offset based on the time zone setting of the browser, and then calculating the current browser's local time from the UTC time derived from the time zone setting of the server.
TimeZone Members CurrentTimeZone Property ToUniversalTime Method
