Develop Reference

Getting IllegalFormatName exception in messageQueue.BeginReceive

I am trying to create a eventhandler for a msmq message router and I almost just copied a online example from msdn library
example 2.
But when I invoke messageQueue.BeginReceive() I get a IllegalFormatName exception.
I am using a private queue
Using VS 2015 on windows 10
Solution is using .Net 4.5.2
I got no problems sending messages to any of my private queues or reading from them if I use messageQueue.Receive()
Exception details below:
System.Messaging.MessageQueueException was unhandled
ErrorCode=-2147467259 HResult=-2147467259 Message=Formatnavnet er
ugyldigt. Source=System.Messaging StackTrace:
ved System.Messaging.MessageQueue.MQCacheableInfo.get_ReadHandle()
ved System.Messaging.MessageQueue.ReceiveAsync(TimeSpan timeout, CursorHandle cursorHandle, Int32 action, AsyncCallback
callback, Object stateObject)
ved System.Messaging.MessageQueue.BeginReceive()
ved MYFirstMSMQ.Program.Main(String[] args) in ......Visual Studio 2015\Projects\FirstQueue_bluff_city\ConsoleApplication1\Program.cs:linje
68
ved System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
ved System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
ved Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
ved System.Threading.ThreadHelper.ThreadStart_Context(Object state)
ved System.Threading.ExecutionContext.RunInternal(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx)
ved System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx)
ved System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
ved System.Threading.ThreadHelper.ThreadStart() InnerException:
Sorry about the Message - windows returns some messages in my native language

Try catch async await https exception

I have what seems a really weird situation. I have some async/await code which uses RestSharp to get some data off several rest APIs (same API hosted on different URLs) which a kind of directory service returns.
Now the problem: one of the APIs returned by said directory service is somehow "private" and initiating a SSL connection to it fails. Fiddler captures the following response:
HTTP/1.1 200 Connection Established
FiddlerGateway: Direct
StartTime: 19:13:11.117
Connection: close
fiddler.network.https> HTTPS handshake to foo.bar.com failed. System.IO.IOException The handshake failed due to an unexpected packet format.
I would ideally like to skip getting data from this API in case this happens and just move on. However, it turns out that a try/catch doesn't help! A NullReferenceException is thrown but even a generic try/catch doesn't manage to catch it.
The code is pretty straightforward:
try
{
await GetDataAsync(url);
}
catch
{
// never gets called
}
and
private async Task<List<Data>> GetDataAsync(string url)
{
var request = new RestRequest("/foo");
var restClient = new RestClient(url);
var response = await restClient.ExecuteTaskAsync<List<Data>>(request); // <-- this throws
return response.Data;
}
I've extracted the code in a library and tried it both in a Console app and in a WPF app, same result, catch block never gets entered.
Any ideas?
l.e.: as requested, here's the full exception stack trace
Unhandled Exception: System.NullReferenceException: Object reference not set to
an instance of an object.
at RestSharp.RestClient.<>c__DisplayClass15`1.<ExecuteTaskAsync>b__12(IRestResponse`1 response, RestRequestAsyncHandle _)
at RestSharp.RestClient.DeserializeResponse[T](IRestRequest request, Action`2 callback, IRestResponse response, RestRequestAsyncHandle asyncHandle)
at RestSharp.RestClient.<>c__DisplayClassa`1.<ExecuteAsync>b__9(IRestResponse response, RestRequestAsyncHandle asyncHandle)
at RestSharp.RestClient.ProcessResponse(IRestRequest request, HttpResponse httpResponse, RestRequestAsyncHandle asyncHandle, Action`2 callback)
at RestSharp.RestClient.<>c__DisplayClass3.<ExecuteAsync>b__0(HttpResponse r)
at RestSharp.Http.ExecuteCallback(HttpResponse response, Action`1 callback)
at RestSharp.Http.ResponseCallback(IAsyncResult result, Action`1 callback)
at RestSharp.Http.<>c__DisplayClass3.<GetStyleMethodInternalAsync>b__1(IAsyncResult result)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.ContextAwareResult.CompleteCallback(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.ContextAwareResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.HttpWebRequest.SetResponse(Exception E)
at System.Net.HttpWebRequest.CheckWriteSideResponseProcessing()
at System.Net.ConnectStream.ProcessWriteCallDone(ConnectionReturnResult returnResult)
at System.Net.HttpWebRequest.WriteCallDone(ConnectStream stream, ConnectionReturnResult returnResult)
at System.Net.ConnectStream.CallDone(ConnectionReturnResult returnResult)
at System.Net.ConnectStream.IOError(Exception exception, Boolean willThrow)
at System.Net.ConnectStream.HandleWriteHeadersException(Exception e, WebExceptionStatus error)
at System.Net.ConnectStream.WriteHeadersCallback(IAsyncResult ar)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.TlsStream.ResumeIOWorker(Object result)
at System.Net.TlsStream.WakeupPendingIO(IAsyncResult ar)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.Security.SslState.FinishHandshake(Exception e, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.PartialFrameCallback(AsyncProtocolRequest asyncRequest)
at System.Net.AsyncProtocolRequest.CompleteRequest(Int32 result)
at System.Net.FixedSizeReader.CheckCompletionBeforeNextRead(Int32 bytes)
at System.Net.FixedSizeReader.ReadCallback(IAsyncResult transportResult)
at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
at System.Net.ContextAwareResult.CompleteCallback(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.ContextAwareResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.Sockets.BaseOverlappedAsyncResult.CompletionPortCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)

This seems to be a bug in RestSharp. I'm not sure you can do anything about it without modifying RestSharp's source.

dll Matlab instance throw an exception while running release in c#

My c# program uses Matlab dll and it works find as long as I run it in Debug mode.
but as I trying to run it in Release mode it crashes immediately when creating it's instance.
It trows TypeInitializationException.
Thanks for your help
StackTrace:
"at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)
at System.Environment.get_StackTrace()
at Turbo_Neuron.ANNController..ctor()
in C:\\Users\\Eli\\Desktop\\....\\MyProject\\Program.cs:line 17
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.Runtime.Hosting.ManifestRunner.Run(Boolean checkAptModel)
at System.Runtime.Hosting.ManifestRunner.ExecuteAsAssembly()
at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData)
at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext)
at System.Activator.CreateInstance(ActivationContext activationContext)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()"
And it sais:
The type initializer for 'MatlabANNComp.MatlabANN' threw an exception.
StachTrace 2:
at MatlabANNComp.MatlabANN..ctor()
at Turbo_Neuron.ANNController..ctor() in C:\Users\Eli\Desktop\Work_ANN\ANN\working\Current\Turbo_Neuron_Pro_Filxed_10.09.13_N\Turbo_Neuron\Matlab_Layer\ANNController.cs:line 49
at Turbo_Neuron.TNController..ctor(pnl_main form) in C:\Users\Eli\Desktop\Work_ANN\ANN\working\Current\Turbo_Neuron_Pro_Filxed_10.09.13_N\Turbo_Neuron\Logic_Layer\TNController.cs:line 49
at Turbo_Neuron.pnl_main..ctor() in C:\Users\Eli\Desktop\Work_ANN\ANN\working\Current\Turbo_Neuron_Pro_Filxed_10.09.13_N\Turbo_Neuron\View_Layer\Turbo_Form.cs:line 29
at Turbo_Neuron.Program.Main() in C:\Users\Eli\Desktop\Work_ANN\ANN\working\Current\Turbo_Neuron_Pro_Filxed_10.09.13_N\Turbo_Neuron\Program.cs:line 17
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.Runtime.Hosting.ManifestRunner.Run(Boolean checkAptModel)
at System.Runtime.Hosting.ManifestRunner.ExecuteAsAssembly()
at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData)
at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext)
at System.Activator.CreateInstance(ActivationContext activationContext)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
Exception messages:
Exception.Message =
"The type initializer for 'MatlabANNComp.MatlabANN' threw an exception."
InnerException.Message =
{"Could not load file or assembly 'MWArray, Version=2.10.1.0,
Culture=neutral, PublicKeyToken=e1d84a0da19db86f'
or one of its dependencies. An attempt was made
to load a program with an incorrect format."}
InnerException.InnerException = null

An attempt was made to load a program with an incorrect format
this is the key, and it means you are mixing platforms somwhow. A 32bit process cannot load 64bit dlls and vice-versa. If a process tries to do so anyway, it throws the above exception.
You say you only changed from Debug->Release, so it's likely something that has to do with platform changed as well. Compare settings for all projects in the Configuration Manager. They all should be x86 or x64 (not AnyCPU). Which one depends on your matlab dll's platform (set when building it).

await with httpClient.GetAsync(url) and getting error System.NullReferenceException was unhandled

I am using VS 2012 and set the target framework 4.0.
public async Task<HttpResponseMessage> GetResponse(Uri url)
{
this.httpClient.DefaultRequestHeaders.Accept.Clear();
HttpResponseMessage response = await this.httpClient.GetAsync(url);
response.EnsureSuccessStatusCode();
}
Error:
System.NullReferenceException was unhandled
HResult=-2147467261
Message=Object reference not set to an instance of an object.
Source=Microsoft.CompilerServices.AsyncTargetingPack.Net4
StackTrace:
Server stack trace: at System.Web.ThreadContext.AssociateWithCurrentThread(Boolean setImpersonationContext) at System.Web.HttpApplication.OnThreadEnterPrivate(Boolean setImpersonationContext) at System.Web.LegacyAspNetSynchronizationContext.CallCallbackPossiblyUnderLock(SendOrPostCallback callback, Object state) at System.Web.LegacyAspNetSynchronizationContext.CallCallback(SendOrPostCallback callback, Object state) at System.Web.LegacyAspNetSynchronizationContext.Post(SendOrPostCallback callback, Object state) at System.Runtime.CompilerServices.TaskAwaiter.<>c__DisplayClassa.<OnCompletedInternal>b__0(Task param0)
Exception rethrown at [0]: at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>b__1(Object state)
at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()
InnerException:
-------------------------------------------------
I have installed "Microsoft.CompilerServices.AsyncTargetingPack" from NuGet, but still getting this error. Any suggestion.

Is there a limit to the number of tasks?

I am running a winrt program with multiple tasks.
In the middle of running, I get the following exception:
Not enough quota is available to process this command
The stack trace is
at Windows.UI.Core.CoreDispatcher.InvokeAsync(CoreDispatcherPriority priority, InvokedHandler freeThreadedCallback, Object sender, Object context)
at System.Threading.WinRTSynchronizationContext.Post(SendOrPostCallback d, Object state)
at System.Threading.Tasks.SynchronizationContextAwaitTaskContinuation.InvokeOrPostAction(Object state)
at System.Threading.Tasks.AwaitTaskContinuation.RunInline(ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
at System.Threading.Tasks.AwaitTaskContinuation.<ThrowAsyncIfNecessary>b__1(Object s)
at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()
Then it crashes.
Is this a problem specific to WintRT?
Is there a workaround?

According to the MSDN documentation for that error message, the fix for that error is to either "close some applications" or "increase the size of your paging file".
Given that, you might want to start by looking in Task Manager and see if your application is using a totally unreasonable amount of memory (or if some other process is). If your process has a memory leak, it might lead to this problem.