c# - 调试WP7崩溃

我的第一本关于WP7堆栈跟踪的文章。

这给我造成了特别的麻烦，并且从我的应用程序的多个用户中弹出。我需要一些帮助来解密。

这是堆栈轨道:

Frame    Image                 Function                                                                              Offset
0        coredll.dll           xxx_RaiseException                                                                32
1        mscoree3_7.dll    WatsonUnhandledManagedException                                                   300
2        mscoree3_7.dll    Dbg_NotifyManagedException                                                        136
3        mscoree3_7.dll    FirstPassException                                                                1044
4                          TransitionStub                                                                    0
5                          System.ThrowHelper.ThrowArgumentException                                         52
6                          System.Collections.Generic.Dictionary`2.Insert                                    344
7                          System.IO.IsolatedStorage.IsolatedStorageSettings.Add                             92
8                          traffic_and_travel_uk.Services.push_settings.button4_Click                        92
9                          System.Windows.Controls.Primitives.ButtonBase.OnClick                             132
10                         System.Windows.Controls.Button.OnClick                                            120
11                         System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp                 228
12                         System.Windows.Controls.Control.OnMouseLeftButtonUp                               100
13                         MS.Internal.JoltHelper.FireEvent                                                  800
14       mscoree3_7.dll    IL_CallManaged                                                                    860
15       mscoree3_7.dll    IL_CallDelegateInternal                                                           176
16       mscoree3_7.dll    makeComPlusCall                                                                   984
17       mscoree3_7.dll    makeComPlusCallReturnInt                                                          40
   18                                                                                                           0
19       agcore.dll        CCoreServices::CLR_FireEvent                                                      400
20       npctrl.dll        CommonBrowserHost::CLR_FireEvent                                                  36
21       npctrl.dll        CControlBase::ScriptCallback                                                      536
22       npctrl.dll        CXcpDispatcher::OnScriptCallback                                                  300
23       npctrl.dll        CXcpDispatcher::OnReentrancyProtectedWindowMessage                                712
  24       npctrl.dll        CXcpDispatcher::WindowProc                                                        408
25       coredll.dll       SendMessageW                                                                      96
26       npctrl.dll        CXcpBrowserHost::SyncScriptCallbackRequest                                        196
27       agcore.dll        CEventManager::RaiseControlEvents                                                 208
28       agcore.dll        CEventManager::Raise                                                              320
29       agcore.dll        CEventManager::RaiseInterleavedRoutedEvents                                       360
30       agcore.dll        CInputManager::InterleaveMouseAndGesture                                          320
31       agcore.dll        CInputManager::ProcessMouseInput                                                  1768
32       agcore.dll        CInputManager::SimulateMouse                                                      248
33       agcore.dll        CInputManager::ProcessGestureInput                                                4492
34       agcore.dll        CInputManager::ProcessInput                                                       440
35       agcore.dll        CCoreServices::ProcessInput                                                       68
36       npctrl.dll        CXcpBrowserHost::HandleInputMessage                                               920
37       npctrl.dll        CXcpControl::OnGestureEvent                                                       460
38       npctrl.dll        CXcpControl::ProcessWindowMessage                                                 1868
39       npctrl.dll        ATL::CWindowImplBaseT_ATL::CWindow,ATL::CWinTraits_1442840576,0_ _::WindowProc    140
40       coredll.dll       DispatchMessageW
41       TaskHost.exe      CHostActiveXModule::RunMessageLoop                                                424
 42       TaskHost.exe      ATL::CAtlExeModuleT_CHostActiveXModule_::Run                                      40
43       TaskHost.exe      WinMain                                                                           1420
44       TaskHost.exe      WinMainCRTStartupHelper                                                           60
45       coredll.dll       MainThreadBaseFunc                                                                428

因此，我可以看到它卡在button4_Click函数上并添加了Iso存储设置，但是这里还发生了什么？我不明白是什么原因导致某些人坠机。

这是有问题的代码:

private void button4_Click(object sender, RoutedEventArgs e)
    {
        var settings = IsolatedStorageSettings.ApplicationSettings;
        settings.Add("FirstPush", "true");

        var hide = Visibility.Collapsed;
        grid4.Visibility = hide;
        SE_service_btn_Click1();
    }

谢谢。任何指导表示赞赏。

最佳答案

在documentation中查看IsolatedStorageSettings.Add():

ArgumentException   key already exists in the dictionary.

请改用IsolatedStorageSettings["FirstPush"] = "true"。如果密钥已经存在，则将创建或更新密钥而不会引发异常。