Stopwatch.ElapsedTicks 属性

public:
 property long ElapsedTicks { long get(); };

public long ElapsedTicks { get; }

member this.ElapsedTicks : int64

Public ReadOnly Property ElapsedTicks As Long

属性值

一个只读长整数，表示当前实例测量的计时器时钟周期总数。

示例

下面的示例使用 Stopwatch 类测量四个不同的实现的性能，以分析字符串中的整数。 该代码示例是 Stopwatch 类中的一个较大示例的一部分。

long ticksThisTime = 0;
int inputNum;
Stopwatch timePerParse;

switch (operation)
{
    case 0:
        // Parse a valid integer using
        // a try-catch statement.

        // Start a new stopwatch timer.
        timePerParse = Stopwatch.StartNew();

        try
        {
            inputNum = Int32.Parse("0");
        }
        catch (FormatException)
        {
            inputNum = 0;
        }

        // Stop the timer, and save the
        // elapsed ticks for the operation.

        timePerParse.Stop();
        ticksThisTime = timePerParse.ElapsedTicks;
        break;
    case 1:
        // Parse a valid integer using
        // the TryParse statement.

        // Start a new stopwatch timer.
        timePerParse = Stopwatch.StartNew();

        if (!Int32.TryParse("0", out inputNum))
        {
            inputNum = 0;
        }

        // Stop the timer, and save the
        // elapsed ticks for the operation.
        timePerParse.Stop();
        ticksThisTime = timePerParse.ElapsedTicks;
        break;
    case 2:
        // Parse an invalid value using
        // a try-catch statement.

        // Start a new stopwatch timer.
        timePerParse = Stopwatch.StartNew();

        try
        {
            inputNum = Int32.Parse("a");
        }
        catch (FormatException)
        {
            inputNum = 0;
        }

        // Stop the timer, and save the
        // elapsed ticks for the operation.
        timePerParse.Stop();
        ticksThisTime = timePerParse.ElapsedTicks;
        break;
    case 3:
        // Parse an invalid value using
        // the TryParse statement.

        // Start a new stopwatch timer.
        timePerParse = Stopwatch.StartNew();

        if (!Int32.TryParse("a", out inputNum))
        {
            inputNum = 0;
        }

        // Stop the timer, and save the
        // elapsed ticks for the operation.
        timePerParse.Stop();
        ticksThisTime = timePerParse.ElapsedTicks;
        break;

    default:
        break;
}

Dim ticksThisTime As Long = 0
Dim inputNum As Integer
Dim timePerParse As Stopwatch

Select Case operation
   Case 0
      ' Parse a valid integer using
      ' a try-catch statement.
      ' Start a new stopwatch timer.
      timePerParse = Stopwatch.StartNew()

      Try
         inputNum = Int32.Parse("0")
      Catch e As FormatException
         inputNum = 0
      End Try

      ' Stop the timer, and save the
      ' elapsed ticks for the operation.
      timePerParse.Stop()
      ticksThisTime = timePerParse.ElapsedTicks
   Case 1
      ' Parse a valid integer using
      ' the TryParse statement.
      ' Start a new stopwatch timer.
      timePerParse = Stopwatch.StartNew()

      If Not Int32.TryParse("0", inputNum) Then
         inputNum = 0
      End If

      ' Stop the timer, and save the
      ' elapsed ticks for the operation.
      timePerParse.Stop()
      ticksThisTime = timePerParse.ElapsedTicks
   Case 2
      ' Parse an invalid value using
      ' a try-catch statement.
      ' Start a new stopwatch timer.
      timePerParse = Stopwatch.StartNew()

      Try
         inputNum = Int32.Parse("a")
      Catch e As FormatException
         inputNum = 0
      End Try

      ' Stop the timer, and save the
      ' elapsed ticks for the operation.
      timePerParse.Stop()
      ticksThisTime = timePerParse.ElapsedTicks
   Case 3
      ' Parse an invalid value using
      ' the TryParse statement.
      ' Start a new stopwatch timer.
      timePerParse = Stopwatch.StartNew()

      If Not Int32.TryParse("a", inputNum) Then
         inputNum = 0
      End If

      ' Stop the timer, and save the
      ' elapsed ticks for the operation.
      timePerParse.Stop()
      ticksThisTime = timePerParse.ElapsedTicks

   Case Else
End Select

注解

此属性表示基础计时器机制中经过的时钟周期数。 时钟周期是计时器可以测量的最小时间 Stopwatch 单位。 使用 Frequency 字段将 ElapsedTicks 值转换为秒数。

可以查询属性 Elapsed， ElapsedMilliseconds并在 ElapsedTicks 实例正在运行或停止时 Stopwatch 。 运行时 Stopwatch ，已用时间属性会稳步增加;在停止实例时它们保持不变。

默认情况下，实例的已用时间值 Stopwatch 等于所有测量时间间隔的总和。 每次调用 Start 开始在累积运行时间开始计数;每次调用 Stop 结束当前间隔度量并冻结累积已用时间值。 使用 Reset 该方法清除现有 Stopwatch 实例中的累积已用时间。

另请参阅

• Elapsed
• ElapsedMilliseconds
• Frequency