I am using MVVMCross 3.5.1 with Windows Phone 8 Silverlight. The app is using using background execution:
<DefaultTask Name="_default" NavigationPage="Views/MainPage.xaml" >
<BackgroundExecution>
<ExecutionType Name="Location" />
</BackgroundExecution>
</DefaultTask>
If I open the app, click start, and then open the app again I'm getting the exception on MvxPhonePage.OnNavigatedTo method with message:
Unable to find incoming MvxViewModelRequest
I've noticed that page is created 2 times and the exception is only thrown the second time and NavigationEventArgs.Uri contains only "/Views/FirstView.xaml" unlike the first time when it contains mvvmcross's paramteters.
Also I created project without MvvmCross. Page constructor is invoked only once, and OnNavigateTo twice.
Call stack:
Cirrious.MvvmCross.WindowsPhone.DLL!Cirrious.MvvmCross.WindowsPhone.Views.MvxPhoneViewsContainer.GetRequestFromXamlUri(System.Uri viewUri) Unknown
Cirrious.MvvmCross.WindowsPhone.DLL!Cirrious.MvvmCross.WindowsPhone.Views.MvxPhoneExtensionMethods.LoadViewModel(Cirrious.MvvmCross.WindowsPhone.Views.IMvxPhoneView phoneView, System.Uri navigationUri, Cirrious.MvvmCross.ViewModels.IMvxBundle savedStateBundle) Unknown
Cirrious.MvvmCross.WindowsPhone.DLL!Cirrious.MvvmCross.WindowsPhone.Views.MvxPhoneExtensionMethods.OnViewCreate.AnonymousMethod__0() Unknown
Cirrious.MvvmCross.DLL!Cirrious.MvvmCross.Views.MvxViewExtensionMethods.OnViewCreate(Cirrious.MvvmCross.Views.IMvxView view, System.Func<Cirrious.MvvmCross.ViewModels.IMvxViewModel> viewModelLoader) Unknown
Cirrious.MvvmCross.WindowsPhone.DLL!Cirrious.MvvmCross.WindowsPhone.Views.MvxPhoneExtensionMethods.OnViewCreate(Cirrious.MvvmCross.WindowsPhone.Views.IMvxPhoneView phoneView, System.Uri navigationUri, Cirrious.MvvmCross.ViewModels.IMvxBundle savedStateBundle) Unknown
Cirrious.MvvmCross.WindowsPhone.DLL!Cirrious.MvvmCross.WindowsPhone.Views.MvxPhonePage.OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e) Unknown
Phone8Native.DLL!Phone8Native.Views.FirstView.OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e) Line 16 C#
Microsoft.Phone.ni.dll!Microsoft.Phone.Controls.PhoneApplicationPage.InternalOnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e) Unknown
Microsoft.Phone.ni.dll!Microsoft.Phone.Controls.PhoneApplicationPage.Microsoft.Phone.Controls.IPhoneApplicationPage.InternalOnNavigatedToX(System.Windows.Navigation.NavigationEventArgs e) Unknown
Microsoft.Phone.ni.dll!System.Windows.Navigation.NavigationService.RaiseNavigated(object content, System.Uri uri, System.Windows.Navigation.NavigationMode mode, bool isNavigationInitiator, Microsoft.Phone.Controls.IPhoneApplicationPage existingContentPage, Microsoft.Phone.Controls.IPhoneApplicationPage newContentPage) Unknown
Microsoft.Phone.ni.dll!System.Windows.Navigation.NavigationService.CompleteNavigation(System.Windows.DependencyObject content, System.Windows.Navigation.NavigationMode mode) Unknown
Microsoft.Phone.ni.dll!System.Windows.Navigation.NavigationService.ContentLoader_BeginLoad_Callback(System.IAsyncResult result) Unknown
Microsoft.Phone.ni.dll!System.Windows.Navigation.PageResourceContentLoader.BeginLoad_OnUIThread(System.AsyncCallback userCallback, System.Windows.Navigation.PageResourceContentLoader.PageResourceContentLoaderAsyncResult result) Unknown
Microsoft.Phone.ni.dll!System.Windows.Navigation.PageResourceContentLoader.BeginLoad.AnonymousMethod__0(object args) Unknown
[Native to Managed Transition]
[Managed to Native Transition]
mscorlib.ni.dll!System.Delegate.DynamicInvokeImpl(object[] args) Unknown
System.Windows.ni.dll!System.Windows.Threading.DispatcherOperation.Invoke() Unknown
System.Windows.ni.dll!System.Windows.Threading.Dispatcher.Dispatch(System.Windows.Threading.DispatcherPriority priority) Unknown
System.Windows.ni.dll!System.Windows.Threading.Dispatcher.OnInvoke(object context) Unknown
System.Windows.ni.dll!System.Windows.Hosting.CallbackCookie.Invoke(object[] args) Unknown
System.Windows.RuntimeHost.ni.dll!System.Windows.RuntimeHost.ManagedHost.InvokeDelegate(System.IntPtr pHandle, int nParamCount, System.Windows.Hosting.NativeMethods.ScriptParam* pParams, System.Windows.Hosting.NativeMethods.ScriptParam* pResult) Unknown
Related
In a native-C++-Dll (MFC): how to throw an Exception (with some additional text) that can be catched and handled from a .NET-Client?
This is the native-MFC-Dll which wants to throw an Exception:
void RGaugeTVDDataReader::LoadDataFromFile_HandleException(const CString& szPath) const
{
CString sMessage;
sMessage.Format(_T("TVD-File %s"), static_cast<LPCTSTR>(szPath));
/*1*/ AfxThrowFileException(CFileException::genericException, -1, static_cast<LPCTSTR>(sMessage));
/*2*/ throw std::runtime_error(CT2A(sMessage));
}
The Caller is a .Net-Dll which uses the native dll via a .net-generated-COM-Wrapper.
Both variants (/1/ and /2/) fall into the catch-Block of the .Net-Component but what I get here is just a ´System.Runtime.InteropServices.SEHException´ and the exceptionmessage says "External component has thrown an exception.". Included ErrorCode and HResult is 0x80004005. There is no inner exception, nothing to find about my given text and the stacktrace only contains the managed part.
So the question is: how to throw an excpetion from the native-c++-dll so that a .net-client using it via COM can at least see the message-string?
Alternative question: how to catch and handle the thrown exception in .net correctly?
regards
In my logs, I found a weird error regarding my ServiceStack service. I don't have further information than the following stacktrace and I didn't manage to reproduce the error yet. That's the stacktrace:
JsvTypeSerializer.EatMapKey (ServiceStack.Text.StringSegment value, System.Int32& i)
DeserializeDictionary`1[TSerializer].ParseStringDictionary (ServiceStack.Text.StringSegment value)
(wrapper delegate-invoke) :invoke_object_StringSegment (ServiceStack.Text.StringSegment)
JsvReader`1[T].ParseStringSegment (ServiceStack.Text.StringSegment value)
JsvReader`1[T].Parse (System.String value)
TypeSerializer.DeserializeFromString[T] (System.String value)
StringExtensions.FromJsv[T] (System.String jsv)
WebServiceException.ParseResponseDto ()
WebServiceException.get_ErrorMessage ()
WebServiceException.get_Message ()
I'm not sure where I should start, the service actually only has json enabled and not jsv, and the part where I handle the request is inside a try-catch block, so I'm not sure why the error is actually happening.
This Exception is due to not being able to parse a structured Error ResponseStatus thrown in a WebServiceException possibly due to returning an unknown Error Response. I've made it so this parsing heuristic doesn't throw an Exception when it fails in this commit.
This change is available from v5.0.3 that's now available on MyGet.
Everything is working fine but from few hours i am getting the error
E/TAG: com.android.volley.ParseError: org.json.JSONException: Value Connection of type java.lang.String cannot be converted to JSONObject
I am using compile 'com.mcxiaoke.volley:library-aar:1.0.0' Library
#Override
public void onErrorResponse(VolleyError error) {
Log.e("TAG",message);
}
It seems to be Error in your server side where Your API resides.
Check your Rest API working properly.
I'm trying to build a WP8 app and I keep getting the following error:
Any ideas?
Error 12 The "GenerateWinPRTManifest" task failed unexpectedly.
System.Xml.XmlException: '.', hexadecimal value 0x00, is an invalid character. Line 1, position 1.
at System.Xml.XmlTextReaderImpl.Throw(Exception e)
at System.Xml.XmlTextReaderImpl.Throw(String res, String[] args)
at System.Xml.XmlTextReaderImpl.ThrowInvalidChar(Char[] data, Int32 length, Int32 invCharPos)
at System.Xml.XmlTextReaderImpl.ParseRootLevelWhitespace()
at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
at System.Xml.XmlTextReaderImpl.Read()
at System.Xml.Linq.XDocument.Load(XmlReader reader, LoadOptions options)
at System.Xml.Linq.XDocument.Load(String uri, LoadOptions options)
at Microsoft.Silverlight.Build.Tasks.GenerateWinPRTManifest.IsManifestUptoDate()
at Microsoft.Silverlight.Build.Tasks.GenerateWinPRTManifest.SaveDocumentIfUpdated()
at Microsoft.Silverlight.Build.Tasks.GenerateWinPRTManifest.ExecuteImplementation()
at Microsoft.Silverlight.Build.Tasks.GenerateWinPRTManifest.Execute()
at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__20.MoveNext()
Not sure what was wrong but deleting the contents of the Bin and obj folder and rebuilding resolved the issue.
I am trying to run IronPython code with c#.
I created a simple console application (.net 4) and added IronPython.dll , IronPython.Modules.dll and Microsoft.Scripting and wrote the next code -
using Microsoft.Scripting.Hosting;
namespace app
{
class Program
{
static void Main(string[] args)
{
ScriptRuntime runtime = IronPython.Hosting.Python.CreateRuntime();
ScriptEngine engine = runtime.GetEngine("py");
engine.Execute("print 'hello!'");
}
}
}
While trying to run this , I get an exception -
Unhandled Exception:
System.Reflection.TargetInvocationException:
Exception has been thrown by the
target of an invocation. --->
System.IO.FileNotFoundException :
Could not load file or assembly
'Microsoft.Scripting, Version=1.0.0.0,
Culture
=neutral, PublicKeyToken=31bf3856ad364e35' or
one of its dependencies. The syste m
cannot find the file specified. at
Core.LanguageProvider.Python..ctor(Stream
stream) --- End of inner exception
stack trace --- at
System.RuntimeMethodHandle._InvokeConstructor(IRuntimeMethodInfo
method, O bject[] args,
SignatureStruct& signature,
RuntimeType declaringType) at
System.RuntimeMethodHandle.InvokeConstructor(IRuntimeMethodInfo
method, Ob ject[] args,
SignatureStruct signature, RuntimeType
declaringType) at
System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags
invokeAttr, B inder binder, Object[]
parameters, CultureInfo culture) at
System.RuntimeType.CreateInstanceImpl(BindingFlags
bindingAttr, Binder bin der, Object[]
args, CultureInfo culture, Object[]
activationAttributes) at
System.Activator.CreateInstance(Type
type, BindingFlags bindingAttr, Binde
r binder, Object[] args, CultureInfo
culture, Object[]
activationAttributes) at
System.Activator.CreateInstance(Type
type, Object[] args) at
Core.LanguageRuntime.RegisterLanguageProvider(Type
providerType) in D:\cod
e\CodeRunner\Core\LanguageRuntime.cs:line
30 at Test.Program.Main(String[]
args) in
D:\code\CodeRunner\Test\Program.cs:lin
e 19 Press any key to continue . . .
I really , dont know what to do , searched at google and dont find a solution.
I will be glad to get help.
Whic version of iron python are you using ? The syntax you show seems belong to an older version, now you should have something like:
var ipy = Python.CreateRuntime();
anyway this blog post seems to be really accurate on pointing the correct reference to use. Anyway, ensure you have the latest IronPython version.