ClickOnce应用程序升级后，没有重新启动完成

Question

我使用AppplicationDeployment类，以检查是否升级包，然后再升级像下面

Dim AD As System.Deployment.Application.ApplicationDeployment = System.Deployment.Application.ApplicationDeployment.CurrentDeployment 
Dim info As System.Deployment.Application.UpdateCheckInfo = Nothing 

Me.DialogResult = Windows.Forms.DialogResult.Cancel 
Me.Close() 

AD.Update() 

Application.Restart() // this doesn't work which is still ok. 

重启不工作，所以我试图让该应用程序升级后的应用程序可执行文件路径并更新注册表，以便在用户重新启动系统时启动最新的应用程序。

升级后，我无法获取安装应用程序的路径。它会在c \ document ... \ user中创建新文件夹....我知道。但是，需要获取此路径并更新注册表。

任何人有任何指针？

Answer 1

你可以尝试重新启动应用程序，像这样：

Dim applicationEntryPoint = ApplicationDeployment.CurrentDeployment.UpdatedApplicationFullName 

Process.Start(applicationEntryPoint) 

// Call any code to shut down the current instance of the application here... 

Answer 2

我建议在某种把一个消息或在它调用Application.Restart，以确保它的真正叫它点跟踪。如果您确认并且仍然无效，那么您是否可能锁定了某些内容，并且在关闭之前不会重新启动？

Answer 3

这很可能是因为您在ClickOnce部署的应用程序中使用了VB的本机单实例应用程序功能。该功能使用了引擎盖下的Mutex，该应用程序不能及时发布以重新启动应用程序。因此，你看到的行为 - 它不会重新启动。

我刚才也有同样的问题。为了解决这个问题，我不得不使用VB翻译，并且稍微修改了我发现的技巧here。实质上，我们需要的是Mutex的共享实例和Application.Restart()上的3秒暂停，以便让现有版本发布其Mutex。不要忘记在项目的Property Pages的Application选项卡上UNCHECK '制作单实例应用程序'。

这是我最后的代码，如下。通过这种方式，我们可以拥有最好的世界 - 我们非常喜欢的VB漂亮的应用程序框架，单实例功能和ClickOnce API重新启动。一次全部。我很头晕。

帽子提示＃1：到devzoo，他的CodeProject posting，展示了主要概念。

帽尖＃2：要NullFX，他WinApi PostMessage() idea，如引述devzoo。

帽尖＃3：@ cmptrs4now他IsRestarting 3秒的停顿想法here。

帽子提示＃4：到@pstrjds他的澄清here。根据他的建议，我将Mutex.ReleaseMutex()更改为Mutex.Close()。这看起来更安全。

HTH

Friend Class Main 
    Inherits System.Windows.Forms.Form 

    Protected Overrides Sub WndProc(ByRef Message As Message) 
    If Message.Msg = SingleInstance.WM_SHOWFIRSTINSTANCE Then 
     ShowWindow() 
    End If 
    MyBase.WndProc(Message) 
    End Sub 

    Private Sub ShowWindow() 
    Me.WindowState = FormWindowState.Normal 
    Me.Focus() 
    End Sub 

    Private Sub cmdUpdate_Click(Sender As Object, e As EventArgs) Handles cmdUpdate.Click 
    If ApplicationDeployment.IsNetworkDeployed Then 
     If ApplicationDeployment.CurrentDeployment.CheckForUpdate(False) 
     ApplicationDeployment.CurrentDeployment.Update() 

     MsgBox("The application has been updated and will now restart.", MsgBoxStyle.Information) 

     My.Settings.IsRestarting = True 
     My.Settings.Save() 

     Application.Restart() 
     End If 
    End If 
    End Sub 
End Class 

Namespace My 
    ' The following events are availble for MyApplication: 
    ' 
    ' Startup: Raised when the application starts, before the startup form is created. 
    ' Shutdown: Raised after all application forms are closed. This event is not raised if the application terminates abnormally. 
    ' UnhandledException: Raised if the application encounters an unhandled exception. 
    ' StartupNextInstance: Raised when launching a single-instance application and the application is already active. 
    ' NetworkAvailabilityChanged: Raised when the network connection is connected or disconnected. 
    Partial Friend Class MyApplication 
    Private Sub MyApplication_Startup(sender As Object, e As ApplicationServices.StartupEventArgs) Handles Me.Startup 
     If My.Settings.IsRestarting Then 
     My.Settings.IsRestarting = False 
     My.Settings.Save() 
     Thread.Sleep(3000) 
     End If 

     If Not SingleInstance.Start() Then 
     SingleInstance.ShowFirstInstance() 
     e.Cancel = True 
     End If 
    End Sub 

    Private Sub MyApplication_Shutdown(sender As Object, e As EventArgs) Handles Me.Shutdown 
     SingleInstance.Stop() 
    End Sub 
    End Class 
End Namespace 

Public NotInheritable Class SingleInstance 
    Public Shared ReadOnly WM_SHOWFIRSTINSTANCE As Integer = WinApi.RegisterWindowMessage("WM_SHOWFIRSTINSTANCE|{0}", ProgramInfo.AssemblyGuid) 
    Private Shared Mutex As Mutex 

    Public Shared Function Start() As Boolean 
    Dim lIsOnlyInstance As Boolean 
    Dim sMutexName As String 

    lIsOnlyInstance = False 
    sMutexName = String.Format("Local\{0}", ProgramInfo.AssemblyGuid) 

    ' If you want your app to be limited to a single instance 
    ' across ALL SESSIONS (multiple users & terminal services), 
    ' then use the following line instead: 
    ' sMutexName = String.Format("Global\\{0}", ProgramInfo.AssemblyGuid); 

    Mutex = New Mutex(True, sMutexName, lIsOnlyInstance) 
    Return lIsOnlyInstance 
    End Function 

    Public Shared Sub ShowFirstInstance() 
    WinApi.PostMessage(New IntPtr(WinApi.HWND_BROADCAST), WM_SHOWFIRSTINSTANCE, IntPtr.Zero, IntPtr.Zero) 
    End Sub 

    Public Shared Sub [Stop]() 
    Mutex.Close() 
    End Sub 
End Class 

Public NotInheritable Class WinApi 
    <DllImport("user32")> _ 
    Public Shared Function RegisterWindowMessage(message As String) As Integer 
    End Function 

    <DllImport("user32")> _ 
    Public Shared Function PostMessage(hwnd As IntPtr, msg As Integer, wparam As IntPtr, lparam As IntPtr) As Boolean 
    End Function 

    <DllImport("user32")> _ 
    Public Shared Function ShowWindow(hWnd As IntPtr, nCmdShow As Integer) As Boolean 
    End Function 

    <DllImport("user32")> _ 
    Public Shared Function SetForegroundWindow(hWnd As IntPtr) As Boolean 
    End Function 

    Public Shared Function RegisterWindowMessage(Template As String, ParamArray Values As Object()) As Integer 
    Return RegisterWindowMessage(String.Format(Template, Values)) 
    End Function 

    Public Shared Sub ShowToFront(Window As IntPtr) 
    ShowWindow(Window, SW_SHOWNORMAL) 
    SetForegroundWindow(Window) 
    End Sub 

    Public Const HWND_BROADCAST As Integer = &HFFFF 
    Public Const SW_SHOWNORMAL As Integer = 1 
End Class 

Public NotInheritable Class ProgramInfo 
    Public Shared ReadOnly Property AssemblyGuid As String 
    Get 
     Dim aAttributes As Object() 

     aAttributes = Assembly.GetEntryAssembly.GetCustomAttributes(GetType(GuidAttribute), False) 

     If aAttributes.Length = 0 Then 
     AssemblyGuid = String.Empty 
     Else 
     AssemblyGuid = DirectCast(aAttributes(0), GuidAttribute).Value 
     End If 
    End Get 
    End Property 
End Class