I have created a simple Console application. I moved all my class files into a separate project because it is shared between this and a Asp.Net MVC application. I add the library fine. I add a reference to the project just fine. Everything looks good until it compiles, then it suddenly can't find the referenced namespace of the project. If I remove the using statement and add it back in the auto complete works fine and sees the project. It's only when building that it gives an error.
At first sight it looks like you're not doing anything wrong. In the past, I've had issues similar to this and the main causes were...
Both projects are targeting a different version of the .NET Framework. It can easily be changed from the project's Properties page
There are compilation errors on the referenced assembly (class library in this case)
The referenced assembly has some missing dependencies. It could be some like a reference to the System.Web assembly or System.Web.MVC, etc
Related
I've added 3 default Blazor projects to my solution.
Blazor WebAssembly1
Blazor WebAsssembly2
Blazor Server
The first WebAssembly project is converted to a razor library in order to share code between server and webassembly projects. I also deleted the default pages like FetchData.razor and such.
On compilation I still get compile error on this (the app runs fine though), and I can't seem to resolve them. I've search through the entire solution but can't find any of the files that results in the compile errors.
How to locate the reason for the errors and remove the references? The files are deleted from the project.
Example of compiler error:
CS0246 The type or namepace 'WeatherForecastService' could not be found (are you missing a using directive or an assembly reference?)
The errors in FetchData indicate a problem with the using statements.
Try to check if you have global using, try to remove and declare explicit in the razor page.
Check your CSPROJ and verify the project type, in the RCL the type must be:
<Project Sdk="Microsoft.NET.Sdk.Razor">
In the RCL you haven't a Program/App structure, you have only components and wwwroot elements.
My RCL is composed as follow:
I have also a _Imports.razor with:
#using Microsoft.AspNetCore.Components.Web
...
The issue resolved itself when I restarted Visual Studio.
Sorry for the wild goose chase
My shared library cannot resolve using RestSharp; among other related namespaces. RestSharp is an installed package and is resolvable in the Droid/iOS projects but cannot be found in the Shared Library. I know this works because I'm using RestSharp in a MonoGame project in the same way. The shared library is referenced in the Droid/iOS projects but still fails during compilation.
Any advice? I tried clean all.
Update I created a new Cross Platform Native app solution and I was able to reference in my shared library without issue. That original project is a bit older and was created with PCL originally. I still want to know why it's not working in my original solution.
I continued to have lots of namespace and type not found issues. Once I showed warnings instead of just errors I found that the csproj was missing. After removing the reference in the native apps and re-adding the issue was resolved. Quite frusterating.
I have a Xamarin.Forms Shared project.
I need to add a reference to System.Net.Http and after some research I found out it should be done via the regular right click -> select assembly (at every regular project), done that.
But now, if I go to any class on my shared project and try to use that DLL I can't (see image)
What am I doing wrong?
I've added the reference to every other project (iOS, Android and WinPhone) but can't access it on my Shared Project classes.
EDIT
After much try-and-error I figured it out...
I have 3 projects (iOS, Android AND WP8.1).
I was able to add System.Net.Http to iOS and Android projects but when I tried to do that at the WP project I got a message saying all needed DLLs were already in the SDK (how presumptuous!).
Anyway, I decided to unload WP project and it worked =/
So the problem now is: How can I add that DLL to the WP project, since I want to support it, but I NEED System.Net.Http?
Thanks.
You can not add a reference to a project type of SharedProject. Instead you have to add this reference to the project you referenced the SharedProject to.
Consider the following:
You have a solution with a console project and a - lets call it core project - as a SharedProject.
Your console project references core. If you now want to use System.Net.WebClient you have to add the reference to System.Net to the console project.
Well, I figured it out.
The way I solved it was by unloading the WP project and reloading it. Perfect, it worked =)
After reloading the project I checked the .NET for Windows Phone reference and System.Net.Http is indeed there. Maybe this was just a cache thing, I don't know.
All I know is unloading the project and reloading it did the trick.
I have asp.net 4 webforms website which references PortableLibrary project. In the website I serialize classes from PortableLibrary. When I deployed the project to webserver machine with IIS6 I'm getting following error:
Could not load file or assembly 'System.Xml, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e, Retargetable=Yes' or one of its dependencies. The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047)
the portable library project references System.Xml (v4.0.31029).
When I tried to deploy clean project without references, just with simple serialization of string object, it worked fine.
A tried assemblybinding in web config but without success.
Why I'm getting this error? I have no idea from where comes the '2.0.5.0' version of system.xml.
answer from here: http://visualstudiogallery.msdn.microsoft.com/b0e0b5e9-e138-410b-ad10-00cb3caf4981
which worked for me
We'll have clearer docs around this when we release, however, you need to have Update for Microsoft .NET Framework (KB2468871)[1] installed on the web server. You will also need to remove the the binding redirect - this will actually have the reverse effect of disabling the feature. :) [1] http://www.microsoft.com/downloads/en/details.aspx?FamilyID=41bdce1f-3cb3-44bb-9b33-23a1b8c99ac3&displaylang=en
I have a project which sends the status of a system via XML to a client. I have another project that is an ASP.Net MVC project. If I use the dll of the first project then I don't have any problems. If I use the exe from the first project then I get the following error:
The type or namespace name 'XXXX' does not exist in the namespace 'YYYYY' (are you missing an assembly reference?)
I think this error is when the page is render. I am not sure how razor works but it seems to create temporary classes.
public class _Page_Views_Status_Index_cshtml : System.Web.Mvc.WebViewPage<xxxx.yyyy.Monitoring.SystemStatus>
Are we not able to reference classes in an exe? I don't see any reason why this shouldn't work.
Probably the class that you are trying to use is located in the DLL and not the EXE, so you need to reference the DLL. You could also reference EXE (assemblies) but in this case make sure that the class that is shown in the error message is actually present in this EXE.
So you could have the following solution structure:
SomeProjectLib (Class library containing the YYYYY.XXXX class)
SomeProjectWin (An exe which references the class library and uses the class from it)
SomeProjectWeb (An ASP.NET MVC project which references the class library and uses the class from it)