Stopwatch.IsHighResolution Field
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Indicates whether the timer is based on a high-resolution performance counter. This field is read-only.
public: static initonly bool IsHighResolution;
public static readonly bool IsHighResolution;
staticval mutable IsHighResolution : bool
Public Shared ReadOnly IsHighResolution As Boolean
Field Value
Examples
The following example displays the frequency and resolution of a Stopwatch timer. This code example is part of a larger example provided for the Stopwatch class.
void DisplayTimerProperties()
{
// Display the timer frequency and resolution.
if ( Stopwatch::IsHighResolution )
{
Console::WriteLine( "Operations timed using the system's high-resolution performance counter." );
}
else
{
Console::WriteLine( "Operations timed using the DateTime class." );
}
Int64 frequency = Stopwatch::Frequency;
Console::WriteLine( " Timer frequency in ticks per second = {0}", frequency );
Int64 nanosecPerTick = (1000L * 1000L * 1000L) / frequency;
Console::WriteLine( " Timer is accurate within {0} nanoseconds", nanosecPerTick );
}
public static void DisplayTimerProperties()
{
// Display the timer frequency and resolution.
if (Stopwatch.IsHighResolution)
{
Console.WriteLine("Operations timed using the system's high-resolution performance counter.");
}
else
{
Console.WriteLine("Operations timed using the DateTime class.");
}
long frequency = Stopwatch.Frequency;
Console.WriteLine(" Timer frequency in ticks per second = {0}",
frequency);
long nanosecPerTick = (1000L*1000L*1000L) / frequency;
Console.WriteLine(" Timer is accurate within {0} nanoseconds",
nanosecPerTick);
}
Public Shared Sub DisplayTimerProperties()
' Display the timer frequency and resolution.
If Stopwatch.IsHighResolution Then
Console.WriteLine("Operations timed using the system's high-resolution performance counter.")
Else
Console.WriteLine("Operations timed using the DateTime class.")
End If
Dim frequency As Long = Stopwatch.Frequency
Console.WriteLine(" Timer frequency in ticks per second = {0}", frequency)
Dim nanosecPerTick As Long = 1000000000 / frequency
Console.WriteLine(" Timer is accurate within {0} nanoseconds", nanosecPerTick)
End Sub
Remarks
The timer used by the Stopwatch class depends on the system hardware and operating system. IsHighResolution is true
if the Stopwatch timer is based on a high-resolution performance counter. Otherwise, IsHighResolution is false
, which indicates that the Stopwatch timer is based on the system timer.
Applies to
See also
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