While my .NET Core application is running, I noticed the following line:
fail: Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware[0]
An unhandled exception has occurred: Method 'Clone' in type 'Microsoft.EntityFrameworkCore.Infrastructure.Internal.SqlServerOptionsExtension' from assembly 'Microsoft.EntityFrameworkCore.SqlServer, Version=1.1.2.0, Culture=neutral, PublicKeyToken=adb9793829ddae60' does not have an implementation. System.TypeLoadException: Method 'Clone' in type 'Microsoft.EntityFrameworkCore.Infrastructure.Internal.SqlServerOptionsExtension' from assembly 'Microsoft.EntityFrameworkCore.SqlServer, Version=1.1.2.0, Culture=neutral, PublicKeyToken=adb9793829ddae60' does not have an implementation.
I'm just curious what's causing this error because my apps is still running fine despite the error message.
By the way, I'm using .NET Core 2.0.0 Preview 1 version.
Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware is just the middleware catching exceptions when nothing else in your program did
So your "real" exception is
Method 'Clone' in type 'Microsoft.EntityFrameworkCore.Infrastructure.Internal.SqlServerOptionsExtension' from assembly 'Microsoft.EntityFrameworkCore.SqlServer, ...' does not have an implementation
By doing some googling with this exception, it seems to get down to support of your .Net Core version vs your EF Provider
If you want more information, you can:
https://learn.microsoft.com/en-us/aspnet/core/fundamentals/error-handling?view=aspnetcore-2.1#the-developer-exception-page Enable Developer Exception pages
Log more information from EF (https://learn.microsoft.com/en-us/aspnet/core/fundamentals/logging/?view=aspnetcore-2.1#add-providers => enable in trace mode will get you more information)
Related
i have created one library using .net standard , am trying to use that in .net core api ,
but am getting error -
Error constructing handler for request of type MediatR.IRequestHandler`2[]. Register your handlers with the container. See the samples in GitHub for examples.
inner exception -
Could not load file or assembly 'RedisHelper.Client, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified.
my mediatr injection as follow -
services.AddMediatR(Assembly.GetExecutingAssembly());
my class DI -
services.AddTransient<IRedisClient, RedisClient>();
can any one suggest me what i am missing here .
Thanks
Error constructing handler for request of type
MediatR.IRequestHandler`2[]. Register your handlers with the
container. See the samples in GitHub for examples.
inner exception - Could not load file or assembly 'RedisHelper.Client,
Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. The system
cannot find the file specified.
As the exception message said, could not load the RedisHelper.Client assembly. Please check your .net core application and the .net standard library, where you add this assembly? Please ensure it adds success, you could also try to re-install it.
Besides, if you add the RedisHelper.Client assembly in the library, you should also add it in the .net core application.
I'm trying to figure out how ASP.NET 5 Web API supports Content Negotiation. In order to support XML (in addition to the default JSON support), according to another answer here on Stack Overflow, I need to add that support from an optional NuGet package.
Things have changed a bit since that answer, but I pulled down the Microsoft.AspNet.Mvc.Xml package and edited my Startup.cs file:
public void ConfigureServices(IServiceCollection services)
{
// Add framework services.
services.AddMvc().AddMvcOptions(options =>
{
options.InputFormatters.Add(new XmlSerializerInputFormatter());
});
}
This, however, doesn't compile:
The type 'InputFormatter' is defined in an assembly that is not referenced. You must add a reference to assembly 'Microsoft.AspNet.Mvc.Core, Version=6.0.0.0, Culture=neutral, PublicKeyToken=null'.
Here are the full compilation error messages:
1>C:\Users\mark\Desktop\WebApplication1\src\WebApplication1\Startup.cs(33,17,33,44): DNX 4.5.1 error CS0012: The type 'InputFormatter' is defined in an assembly that is not referenced. You must add a reference to assembly 'Microsoft.AspNet.Mvc.Core, Version=6.0.0.0, Culture=neutral, PublicKeyToken=null'.
1>C:\Users\mark\Desktop\WebApplication1\src\WebApplication1\Startup.cs(33,45,33,78): DNX 4.5.1 error CS1503: Argument 1: cannot convert from 'Microsoft.AspNet.Mvc.Xml.XmlSerializerInputFormatter' to 'Microsoft.AspNet.Mvc.Formatters.IInputFormatter'
1>C:\Users\mark\Desktop\WebApplication1\src\WebApplication1\Startup.cs(33,17,33,44): DNX Core 5.0 error CS0012: The type 'InputFormatter' is defined in an assembly that is not referenced. You must add a reference to assembly 'Microsoft.AspNet.Mvc.Core, Version=6.0.0.0, Culture=neutral, PublicKeyToken=null'.
1>C:\Users\mark\Desktop\WebApplication1\src\WebApplication1\Startup.cs(33,45,33,78): DNX Core 5.0 error CS1503: Argument 1: cannot convert from 'Microsoft.AspNet.Mvc.Xml.XmlSerializerInputFormatter' to 'Microsoft.AspNet.Mvc.Formatters.IInputFormatter'
The error message seems fairly clear, but the project already includes Microsoft.AspNet.Mvc.Core, although not quite in the desired version:
Id Versions
-- --------
Microsoft.AspNet.IISPlatformHandler {1.0.0-rc1-final}
Microsoft.AspNet.Mvc {6.0.0-rc1-final}
Microsoft.AspNet.Mvc.Core {6.0.0-rc1-final}
Microsoft.AspNet.Mvc.Xml {6.0.0-beta5}
Microsoft.AspNet.Server.Kestrel {1.0.0-rc1-final}
Microsoft.AspNet.StaticFiles {1.0.0-rc1-final}
Microsoft.Extensions.Configurati... {1.0.0-rc1-final}
Microsoft.Extensions.Configurati... {1.0.0-rc1-final}
Microsoft.Extensions.Logging {1.0.0-rc1-final}
Microsoft.Extensions.Logging.Con... {1.0.0-rc1-final}
Microsoft.Extensions.Logging.Debug {1.0.0-rc1-final}
As I'm writing this, ASP.NET 5 is only available in a Release Candidate version, so the above packages are the most recent available.
Clearly, Microsoft.AspNet.Mvc.Core 6.0.0.0 isn't available. In a normal .NET project, I'd attempt to solve this issue with a binding redirect, but since this is ASP.NET 5, that's apparently no longer the way to do things.
How can I make my code compile?
I believe you have to use the Microsoft.AspNet.Mvc.Formatters.Xml package instead. Also see this issue on github.
Also a hot tip: Use http://packagesearch.azurewebsites.net/ to search for which NuGet-package contains the class you are looking for.
I am starting to explore Application Insights and tried adding it to my Windows Phone 8.1 app. While trying to execute the project, an exception is thrown on load within Public Sub New() in App.xaml.vb. The line where the error happens is
TelemetryClient = new TelemetryClient()
The exception thrown is
A first chance exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.ni.dll
An exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.ni.dll but was not handled in user code
Additional information: Exception has been thrown by the target of an invocation.
Innerexception details:
{System.InvalidOperationException: Type 'Microsoft.ApplicationInsights.Extensibility.ComponentContextInitializer, Microsoft.ApplicationInsights, Version=0.16.1.418, Culture=neutral, PublicKeyToken=31bf3856ad364e35' does not implement the required interface
Microsoft.ApplicationInsights.Extensibility.IContextInitializer.
at Microsoft.ApplicationInsights.Extensibility.Implementation.TelemetryConfigurationFactory.CreateInstance(Type interfaceType, String typeName)
at Microsoft.ApplicationInsights.Extensibility.Implementation.TelemetryConfigurationFactory.LoadInstance(XElement definition, Type expectedType, Object instance)
at Microsoft.ApplicationInsights.Extensibility.Implementation.TelemetryConfigurationFactory.LoadInstances[T](XElement definition, ICollection`1 instances)}
I followed the steps outlined in the Azure documentation. What may I be doing wrong?
Are you using a Windows Phone app on top of Windows Runtime or on top of Silverlight?
If you remove the following line from ApplicationInsights.config, does your app start successfully?
<Add Type="Microsoft.ApplicationInsights.Extensibility.ComponentContextInitializer, Microsoft.ApplicationInsights"/>
Turns out it was a corrupted solution. I had added the nuget and then added the Application Insights. In between I had upgraded the nugget package to the 0.16 pre-release version. In effect it had created multiple references. So I ended up manually clearing all entries of Microsoft.ApplicationInsights in package.config and .vbproj. I also removed all the references and referenced the whole thing again. Now it works like a charm!
I am trying to test a web site with xsp4, all assemblies are compiled for target framework 4.5. I get the following stack trace.
Exception during TraceManager initialization:
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.TypeInitializationException: An exception was thrown by the type initializer for System.Web.Configuration.TraceSection ---> System.MissingMethodException: Method not found: 'System.Configuration.ConfigurationProperty..ctor'.
--- End of inner exception stack trace ---
at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&)
A search here on stackoverflow (and other places) found that a possible reason is that xsp4 runs within the 4.0 directory of mono. Mine is already located in 4.5 and is used by the xsp script, so I am stuck with this one. Any ideas?
Found it. The error resulted from having a FSharp.Core.Dll within the bin folder. It is a mixed F# / C# project and a local copy is not needed, if the Dll resides within the GAC. Removing it made the error disappear.
I am using PRISM for Silverlight 4.0 in one of my projects where I also access Sharepoint 2010.
The strange thing is that randomly I get the error:
An exception occurred while initializing module 'SharepointServiceModule'.
- The exception message was: Die Methode add_GetListCompleted im Typ SharepointServiceModule.Services.SharepointObjectModelService der Assembly SharepointServiceModule, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null hat keine Implementierung.
- The Assembly that the module was trying to be loaded from was:SharepointServiceModule, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
Check the InnerException property of the exception for more information. If the exception occurred while creating an object in a DI container, you can exception.GetRootException() to help locate the root cause of the problem.
Which is very strange for me because first of all it happens only randomly and second that the method "add_GetListCompleted" is an event which must be implemented because I use it and it works.
Does anybody have an idea of whats going on here?
I found a solution for my problem.
First I tried to change the name of the interface and I noticed that the interface name did not change in the error message.
Therefore I removed the affected xap module from the Web project (this can be done in the properties of the "name.Web" project under "Silverlight Applications") and added it again. Then I performed a clean of the solution and a rebuild. After that everthing worked fine...