語言

Stopwatch.IsHighResolution 欄位

定義

命名空間:
System.Diagnostics
組件:
System.dll, System.Runtime.Extensions.dll
組件:
netstandard.dll, System.Runtime.dll
組件:
System.Runtime.Extensions.dll
組件:
System.dll
組件:
netstandard.dll
來源:
Stopwatch.cs
來源:
Stopwatch.cs
來源:
Stopwatch.cs
來源:
Stopwatch.cs
來源:
Stopwatch.cs

顯示計時器是否基於高解析度性能計數器。 此欄位僅供讀取。

public: static initonly bool IsHighResolution;
public static readonly bool IsHighResolution;
 staticval mutable IsHighResolution : bool
Public Shared ReadOnly IsHighResolution As Boolean

欄位值

Boolean

範例

以下範例展示了計時器的頻率與解析度 Stopwatch 。 此程式碼範例是本類別更大範例 Stopwatch 的一部分。

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

備註

該類別使用的 Stopwatch 計時器取決於系統硬體與作業系統。 IsHighResolution 如果 true 計 Stopwatch 時器是基於高解析度的效能計數器。 否則， IsHighResolution 為 false，表示 Stopwatch 計時器是基於系統計時器。

適用於

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