.net - 如何计算用户在应用程序上花费的总时间？

Question

我想创建一个能够计算用户(即我自己)在特定应用程序(例如 Firefox)上花费的总时间的应用程序。如果用户在 Firefox 上花费大量时间(例如 1 小时或更长时间)，此应用程序应显示警告消息

原因 : 我是一名 VB.NET 开发人员。在我的工作时间内，我的主要工具是 Visual Studio，我想进行编码。但是我偶尔需要 Firefox 来访问互联网(尤其是 SO 和其他网站)来为我的编程问题找到解决方案。问题是我沉迷于 SO 和 SO 浪费了我几个小时的时间 直到我忘记了我想继续编码而不是浏览 SO 站点。

我的问题 : 如何计算用户在 Firefox 等开放应用程序上花费的总时间？

更新:

如果我在 Firefox 上停留的时间过长，我需要播放一首歌曲作为警告信息。我的意图是创建一个 winform 或 windows 服务来实现这一点

Answer 1

这个人，Sateesh Arveti，编码了你要找的东西:Active Application Watcher :

Up to now, I have seen so many applications that will show system usage in terms of memory, processor...But, A user don't want this all details. He May expect to know how much time, he is spending on each application like browser, Winamp by the end of day...This application will help out a user to know how much time , he is spending on each application every day. This application assumes that the window, which is active as the application on which the user is working. So, it will log that application details like window title, process name and time spent on it in an xml file. It will continue like that until the application is closed. Once the application is closed, it will show entire active application's details in a browser with proper format.

这是我的简单 vb.net 版本(我为 FireFox 添加了声音警报事件)。



创建一个 WinTracker 类:

Imports System
Imports System.ComponentModel

Public Class WinTracker
  Implements INotifyPropertyChanged
  Public Event PropertyChanged(ByVal sender As Object, ByVal e As PropertyChangedEventArgs) Implements INotifyPropertyChanged.PropertyChanged
  Public Event SoundAlert(ByVal sender As Object, ByVal e As EventArgs)

  Private _ID As Integer
  Private _Text As String
  Private _ElapsedTime As TimeSpan
  Private _LastStart As DateTime
  Private _RunningTime As TimeSpan

  Public Sub New(ByVal id As Integer, ByVal text As String)
    _ID = id
    _Text = text
    Call StartTracking()
  End Sub

  ReadOnly Property ID() As Integer
    Get
      Return _ID
    End Get
  End Property

  Property Text() As String
    Get
      Return _Text
    End Get
    Set(ByVal value As String)
      If value <> _Text Then
        _Text = value
        RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs("Text"))
      End If
    End Set
  End Property

  Public Sub StartTracking()
    _RunningTime = TimeSpan.Zero
    _LastStart = DateTime.Now
  End Sub

  Public Sub StopTracking()
    _ElapsedTime += _RunningTime
    _RunningTime = TimeSpan.Zero
    RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs("ToString"))
  End Sub

  Public Sub UpdateTime()
    _RunningTime = (DateTime.Now - _LastStart)
    RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs("ToString"))

    If _RunningTime.Seconds >= 60 Then
      RaiseEvent SoundAlert(Me, New EventArgs)
    End If
  End Sub

  Public Overrides Function ToString() As String
    Return "(" & FormatTimeSpan(_ElapsedTime + _RunningTime) & ")   " & _Text
  End Function

  Public Shared Operator =(ByVal thisItem As WinTracker, ByVal thatItem As WinTracker) As Boolean
    Return (thisItem.ID = thatItem.ID)
  End Operator

  Public Shared Operator <>(ByVal thisItem As WinTracker, ByVal thatItem As WinTracker) As Boolean
    Return Not (thisItem.ID = thatItem.ID)
  End Operator

  Private Function FormatTimeSpan(ByVal span As TimeSpan) As String
    Return span.Hours.ToString("00") & " hrs " & span.Minutes.ToString("00") & " min " & span.Seconds.ToString("00") & " sec"
  End Function

  Public Shared Sub SwitchWindows(ByVal FromWindow As WinTracker, ByVal ToWindow As WinTracker)
    FromWindow.StopTracking()
    ToWindow.StartTracking()
  End Sub

End Class

然后创建一个带有计时器和列表框的表单:

Imports System
Imports System.ComponentModel
Imports System.Diagnostics
Imports System.Runtime.InteropServices

Public Class Form1
  Private Declare Auto Function GetForegroundWindow Lib "user32" () As IntPtr
  Private Declare Auto Function GetWindowThreadProcessId Lib "user32" (ByVal hWnd As Int32, ByRef lpdwProcessId As Int32) As UInt32

  Private _Windows As New BindingList(Of WinTracker)
  Private _ActiveWindow As WinTracker

  Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load
    With ListBox1
      .ValueMember = "ID"
      .DisplayMember = "ToString"
      .DataSource = New BindingSource(_Windows, Nothing)
    End With
    Timer1.Enabled = True
  End Sub

  Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As EventArgs) Handles Timer1.Tick
    Dim hWnd As Integer = GetForegroundWindow().ToInt32

    If hWnd > 0 Then
      Dim id As Integer = 1
      Call GetWindowThreadProcessId(hWnd, id)
      If id > 0 Then
        Dim text As String = Process.GetProcessById(id).ProcessName

        If text <> String.Empty Then
          Dim spent As WinTracker = _Windows.FirstOrDefault(Function(x As WinTracker) x.ID = id)
          If spent Is Nothing Then
            spent = New WinTracker(id, text)
            _Windows.Add(spent)

            If text.ToLower = "firefox" Then
              AddHandler spent.SoundAlert, AddressOf WinTracker_SoundAlert
            End If

          Else
            spent.Text = text
          End If

          If _ActiveWindow Is Nothing Then
            _ActiveWindow = spent
          Else
            If _ActiveWindow <> spent Then
              WinTracker.SwitchWindows(_ActiveWindow, spent)
              _ActiveWindow = spent
            Else
              _ActiveWindow.UpdateTime()
            End If
          End If

        End If
      End If
    End If
  End Sub

  Private Sub WinTracker_SoundAlert(ByVal sender As Object, ByVal e As EventArgs)
    My.Computer.Audio.PlaySystemSound(Media.SystemSounds.Beep)
  End Sub    

End Class

根据需要重构。