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The type ‘x’ is defined in an assembly that is not referenced. You must add a reference to assembly ‘abc123’.
I have a .NET 2.0 web application that references my assembly ‘abc123’. The assembly exists in the GAC and I’ve verified that it is the correct(same) version. The rest of application has no issues except for one .aspx page. The page in question has a repeater that displays a user control as one of its «fields». Upon binding a list of type y to the repeater I pass the user control a list of type x (a property of y) as shown here:
<uc1:usercontrol id="ucusercontrol " runat="server" myPublicUserControlProperty='<%#Eval("CollectionOfX") %>'/>
On the user control’s property set, I bind the list of type x to a gridview in the user control.
One strange thing to note is that this report works fine on my development pc but not on any servers once I deploy. My pc is Windows XP, IIS6, VS2005. The servers are Windows Server 2003, IIS6.
I hope I explained that well enough. Thanks in advance for any insight you can provide.
Dave Clemmer
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asked Nov 12, 2008 at 16:09
I’m Mike’s coworker, and we worked out a solution.
The type X is defined in his assembly, that is only in the GAC. Even though his ASP.NET web appplication did have a reference, it was failing to load from the GAC only for this UserControl. The rest of the application worked as expected. We confirmed the failed loading by placing a copy of the assembly in the bin directory, and everything worked. We removed the assembly, and the problem came back.
Our solution was to manually add an entry to the web.config in the assemblies section to point ASP.NET to the GAC.
It looks like any time you reference a type in the page (not the code-behind), you need the assembly information defined in the web.config file or in a page directive.
<assemblies>
<add assembly="MyAssembly, Version=1.0.0.0, Culture=neutral, PublicKeyToken=[MyPublicKeyToken]"/>
</assemblies>
answered Nov 12, 2008 at 19:32
Aaron DanielsAaron Daniels
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0
When troubleshooting these types of problems, the Fusion Log Viewer has always been a great help.
answered Nov 12, 2008 at 16:27
MaxamMaxam
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There’s also a bug that can manifest itself with similar symptoms, described here.
The workaround is to delete everything in the C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\ directory, and it only seems to manifest itself in debug mode.
answered Feb 12, 2009 at 1:47
Tom LianzaTom Lianza
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1
I found that if type x is actually a class in your App_Code, dirtying it and re-saving often forces the web app to recompile and solves the problem.
kapa
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answered Mar 2, 2012 at 11:01
More often than not, it is because of the cached assemblies. One way resolve this issue is by making the «strong reference» in the proj or config file. Refer this blog post
answered Mar 7, 2011 at 2:00
Lav GLav G
1539 bronze badges
I had the exact same error, but I had a public constructor in my class that used as a parameter, an object from another project.
I resolved the problem by making that constructor internal.
Stephan
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answered Feb 16, 2011 at 13:39
For me it was a version control pull problem.
In Visual studio, open «References» in your Solution explorer, and scroll through it.
If anything has a yellow warning triangle on it, remember the name, remove it, and add it back again (or have ReSharper do it for you).
Happened to me several times after pulling a project when a co-worker added a new package and references.
answered May 7, 2018 at 0:14
Max IzrinMax Izrin
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In my database schema each forum has a category and categories can have many forums. I’m trying to list categories and their respective forums with the following code:
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<dynamic>" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
Index
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>Index</h2>
<% foreach (GameSite.Models.Category category in (IEnumerable)ViewData["Categories"])
{ %>
<%= category.Name %>
<% foreach (GameSite.Models.Forum forum in (IEnumerable)category.Forums)
{ %>
<%= forum.Name %>
<% } %>
<% } %>
</asp:Content>
When this is run I get the following error:
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0012: The type 'System.Data.Linq.EntitySet`1<T0>' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
Source Error:
Line 11: { %>
Line 12: <%= category.Name %>
Line 13: <% foreach (GameSite.Models.Forum forum in (IEnumerable)category.Forums)
Line 14: { %>
Line 15: <%= forum.Name %>
I can confirm that System.Data.Linq is being referenced in my project.
Any ideas?
asked Apr 15, 2010 at 1:33
2
Adding this to the web.config file did the trick.
<add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
answered Apr 15, 2010 at 1:55
Matthew HMatthew H
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5
- Remove From My Forums
-
Question
-
We have a problem with a C# project, which refernces another C# project with additional references.
Project A -> references Project B
Project B -> references Project C, D, E
With Visual Studio 2008 the project A just refernced the project B and the solution was working.
After migration to Visual Studio 2010 the compile error CS0012 appears and needs the references in Project A to the projects C, D and E as well.
Our problem is that just the add of this projects is not enough as those projects references many another projects as well.
Is it a known issue in visual studio 2010? Did somebody experienced the same problems after migration and know how to resolve the issue?
Best Regards
Paul
Answers
-
Does your project A has got
[assembly: CLSCompliant(true)]in AssemblyInfo.cs?If yes, read this: http://stackoverflow.com/questions/1254078/clscomplianttrue-drags-in-unused-references
-
Edited by
Thursday, February 3, 2011 1:34 PM
Typo -
Marked as answer by
Paul73D
Thursday, February 3, 2011 5:18 PM
-
Edited by
Contents
- 1 Compiler Error Message Cs0012 Issue 64783 Microsoftdocs Azure
- 2 Fixing Compiler Error Cs1026 In C# Application
- 2.1 Conclusion
- 2.1.1 Related image with compiler error message cs0012 issue 64783 microsoftdocs azure
- 2.1.2 Related image with compiler error message cs0012 issue 64783 microsoftdocs azure
- 2.1 Conclusion
We were solutely delighted to have you here, ready to embark on a journey into the captivating world of Compiler Error Message Cs0012 Issue 64783 Microsoftdocs Azure. Whether you were a dedicated Compiler Error Message Cs0012 Issue 64783 Microsoftdocs Azure aficionado or someone taking their first steps into this exciting realm, we have crafted a space that is just for you. C cs0005 cs0001 download messages cs0013 cs0009 compiler cs0021- cs0019 cs0020 cs0016 messages error cs0015 cs0010 workloads cs0012 cs0014 resources cs0017 cs0007 cs0004 cs0008 apis cs0011 Features cs0003 cs0006
Compiler Error Message Cs0012 Issue 64783 Microsoftdocs Azure
Compiler Error Message Cs0012 Issue 64783 Microsoftdocs Azure
Compiler error message: cs0012 · issue #64783 · microsoftdocs azure docs · github microsoftdocs azure docs public notifications fork 20.4k star 9.3k code issues 3.3k pull requests 141 security insights new issue compiler error message: cs0012 #64783 closed dsmith222 opened this issue on oct 21, 2020 · 2 comments. Failed cs0012: the type ‘object’ is defined in an assembly that is not referenced. you must add a reference to assembly ‘mscorlib, version=4.0.0.0, culture=neutral, publickeytoken=7cec85d7bea7798e’. followed by a bunch complaints about predefined types:.
Receiving Error Cs0012 The Type Is Defined In An Assembly That Is Not
Receiving Error Cs0012 The Type Is Defined In An Assembly That Is Not
Features workloads apis resources download c# compiler messages error messages cs0001 cs0003 cs0004 cs0005 cs0006 cs0007 cs0008 cs0009 cs0010 cs0011 cs0012 cs0013 cs0014 cs0015 cs0016 cs0017 cs0019 cs0020 cs0021. Migrating a solution from core 3.1 to 5.0 fail on csharpcompilation emit. i was able to reproduce the problem with a minimal project as described on the steps bellow. version used: micros. Error cs0012 the type ‘object’ is defined in an assembly that is not referenced. you must add a reference to assembly ‘netstandard, version=2.0.0.0, culture=neutral, publickeytoken=cc7b13ffcd2ddd51’. · issue #391 · dotnet standard · github projects insights #391 . hi, i’m using vs 2017 15.3 preview 2. Fork 20.5k star 9.4k code issues 3.3k pull requests 156 security insights new issue azure functions runtime is unreachable after deploying via terraform template #108111 closed basel78 opened this issue on apr 12 · 3 comments basel78 commented on apr 12 • edited by ajaybathini msft.
C Blazor App Puzzling Compiler Error Message On A New Page Stack
C Blazor App Puzzling Compiler Error Message On A New Page Stack
Error cs0012 the type ‘object’ is defined in an assembly that is not referenced. you must add a reference to assembly ‘netstandard, version=2.0.0.0, culture=neutral, publickeytoken=cc7b13ffcd2ddd51’. · issue #391 · dotnet standard · github projects insights #391 . hi, i’m using vs 2017 15.3 preview 2. Fork 20.5k star 9.4k code issues 3.3k pull requests 156 security insights new issue azure functions runtime is unreachable after deploying via terraform template #108111 closed basel78 opened this issue on apr 12 · 3 comments basel78 commented on apr 12 • edited by ajaybathini msft. 36 the type ‘x’ is defined in an assembly that is not referenced. you must add a reference to assembly ‘abc123’. i have a 2.0 web application that references my assembly ‘abc123’. the assembly exists in the gac and i’ve verified that it is the correct (same) version. the rest of application has no issues except for one .aspx page. Link migrate your project from packages.config into packagereference. link make sure you are running on the latest version of visual studio. this is because we have added a lot of tooling during the build in order to ensure this problem won’t happen. this is targeting 4.7.2 (as stated).
Current Status Issue 21794 Microsoftdocs Azure Docs Github
Current Status Issue 21794 Microsoftdocs Azure Docs Github
36 the type ‘x’ is defined in an assembly that is not referenced. you must add a reference to assembly ‘abc123’. i have a 2.0 web application that references my assembly ‘abc123’. the assembly exists in the gac and i’ve verified that it is the correct (same) version. the rest of application has no issues except for one .aspx page. Link migrate your project from packages.config into packagereference. link make sure you are running on the latest version of visual studio. this is because we have added a lot of tooling during the build in order to ensure this problem won’t happen. this is targeting 4.7.2 (as stated).
3 Types Of Errors In Java Programming
3 Types Of Errors In Java Programming
Fixing Compiler Error Cs1026 In C# Application
Fixing Compiler Error Cs1026 In C# Application
fixing compiler error cs1026 in c# application youtu.be ov7civxow o #fixerror #compiler #error #cs1026 #csharp if you want to use another namespace to your project u can follow my tutorial to do that. but you found error «are you missing a have you ever deployed an asp core web app to azure app service and received the dreaded ‘http error 500.30 ancm fixing compiler error cs1002 in c# application youtu.be fsik0c h5 w #fixerror #compiler #error #cs1002 #csharp (fixed) windows script host syntax error code 800a03ea microsoft jscript compilation error subscribe for the next update this visual studio tutorial will focus on some errors while creating vsts extension and it’s continuous integration pipeline. some times we run c program in vs code but the program doesn’t compile and shows undefined reference to ‘winmain@16’ code blocks 17.12 gnu gcc compiler error fixed 2023 | 100% working here i show how to fixed code blocks gcc compiler how to fix error gcc g no such file or directory fatal error no input files. ros #roboticoperatingsystem #robotics #mechatronics #mechanicalengineering #controltheory #controlengineering the referenced assembly could not be found. error:0x80073701 | fix windows update error: 0x80073701 your queries: how to
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