調試WP7崩潰

Question

我第一次爲WP7創建堆棧軌跡。

這給我帶來了特別的麻煩，並且正從我的應用的幾個用戶彈出。我需要一些幫助來破譯這個。

這是堆棧跟蹤：

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 

所以我可以看到它被陷在button4_Click功能和新增ISO存儲設置，但還有什麼是怎麼回事？我不明白是什麼造成了一些人的崩潰。

這是有問題的代碼：

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(); 
    } 

感謝。任何指導讚賞。

Answer 1

看那documentation爲IsolatedStorageSettings.Add()：

ArgumentException key already exists in the dictionary. 

使用IsolatedStorageSettings["FirstPush"] = "true"代替。這將創建或更新密鑰，如果它已經存在沒有拋出異常。