将时间戳存储到会话并计算时差会导致问题

Question

我正在计算从aspx第1页到第2页需要多少秒。这次没有反映真正的时钟..错误在哪里？

第1页

我有：

Session("sessioncreated") = Now.Ticks

第2页

我有：

Dim diff As Long = 0
If Not Session("sessioncreated") Is Nothing Then
  diff = Now.Ticks - Session("sessioncreated")
End If
Dim timediff As Integer = TimeSpan.FromTicks(diff).Seconds

Answer 1

了解您所看到的问题会有所帮助...... 无论如何，我认为你应该改变：

Dim timediff As Integer = TimeSpan.FromTicks(diff).Seconds

到

Dim timediff As Integer = TimeSpan.FromTicks(diff).TotalSeconds

Answer 2

使用： -

Session("sessioncreated") = Now
Dim diff as TimeSpan

If Not Session("sessioncreated") Is Nothing Then
   diff = Now - DirectCast(Session("sessioncreated"), DateTime)
End If
Dim timediff As Integer = diff.TotalSeconds

Answer 3

保持简单

    Dim stpw As New Stopwatch 'declare in the class


    'on page 1
    stpw.Reset()
    stpw.Start()


    'on page 2
    stpw.Stop()
    'stpw.Elapsed.TotalSeconds 'will contain seconds between the two