I'm trying to use Simple Membership in an MVC 5 project. I followed a video tutorial on a test project on my machine and was able to get it to work. Now I'm ready to implement it on a new website but when I get to the step of making a reference for Webmatrix.Data and Webmatrix.WebData I don't have the option in the References/Assemblies/Extensions section. I went to NuGet and tried to add WebMatrix and saw where is said it was legacy and to use AspNet.WebPages.WebData which I then installed through NuGet. Still no reference available for Webmatrix.
So, I looked at the references of the project that was working and found that there was a Packages/Microsoft.AspNet.WebPages.WebData.3.2.3 folder and copied that to my current projects folder. I then made a manual reference to the WebMatrix.dll in that folder and made sure that it was listed in my packages.config file like my working project. That seemed to have fixed my issue where it my pages were referencing the System.Web.Security.
However, in my Global.asax page I need to have the following
WebSecurity.InitializeDatabaseConnection("DbConnection", "Users", "UserId", "UserName", autoCreateTables: true);
I'm getting an error with that. It says 'object' does not contain a definition for 'InitializeDatabaseConnection and the using WebMatrix.WebData is grayed out at the top. When I type WebSecurity and look at the options through intellisense I have very few options and InitializeDatabaseConnection is definitely not there. I can see the reference to WebMatrix.Data and WebMatrix.WebData listed in my References section and there doesn't seem to be any errors associated with that.
I've tried to do some Google searches and can't find anything about the issue. I've been at this for several hours and I'm pulling my hair out trying to get this to work. Please, any suggests would be really helpful...I'm at a complete loss.
I had NuGet install Microsoft.AspNet.WebPages.WebData, Microsoft.AspNet.WebPages.Data and Microsoft.AspNet.WebPages (all v3.2.4).
Then I added a reference to WebMatrix.WebData by browsing to the package (.....\packages\Microsoft.AspNet.WebPages.WebData.3.2.4\lib\net45\WebMatrix.WebData.dll).
And everything worked fine, with
using System.Web.Security;
using WebMatrix.WebData;
I know the error message is common and there are plenty of questions on SO about this error, but no solutions have helped me so far, so I decided to ask the question. Difference to most of similar questions is me using App_Code directory.
Error message:
CS0012: The type 'Project.Rights.OperationsProvider' is defined in an
assembly that is not referenced. You must add a reference to assembly
'Project.Rights, version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.
Source File:
c:\inetpub\wwwroot\Test\Website\App_Code\Company\Project\BusinessLogic\Manager.cs
Following suggestions here and here, I have deleted all instances of Project.Rights.dll inside C:\Windows\Microsoft.NET/*.*
According to this, I checked if .cs files in question have build action set to "Compile". They do.
I have also double checked that the .cs file containing the "Project.Rights.OperationsProvider" type is deployed to App_Code directory.
For some reason, application is not looking for the type in the App_Code directory. Since I've deleted all instances of Project.Rights.dll (that I know of), I don't know which assembly the error message is mentioning.
When you get this error it isn't always obvious what is going on, but as the error says - you are missing a reference. Take the following line of code as an example:
MyObjectType a = new MyObjectType("parameter");
It looks simple enough and you probably have referenced "MyObjectType" correctly. But lets say one of the overloads for the "MyObjectType" constructor takes a type that you don't have referenced. For example there is an overload defined as:
public MyObjectType(TypeFromOtherAssembly parameter) {
// ... normal constructor code ...
}
That is at least one case where you will get this error. So, look for this type of pattern where you have referenced the type but not all the types of the properties or method parameters that are possible for functions being called on that type.
Hopefully this at least gets you going in the right direction!
Check target framework in the projects.
In my case "You must add a reference to assembly" actually meant, that caller and reference projects didn't have the same target framework. The caller project had .Net 4.5 , but referenced library had target 4.6.1.
I am sure, that MS compiler can be smarter and log more meaningful error message. I've added a suggestion to https://github.com/dotnet/roslyn/issues/14756
In my case this was because doing a NuGet package update had only updated references to a dll dependency in some but not all projects in my solution - resulting in conflicting versions. Using a grep-style tool to search text within *.csproj files in my solution it was then easy to see the projects that still needed to be updated.
When you get this error, it means that code you are using makes a reference to a type that is in an assembly, but the assembly is not part of your project so it can't use it.
Deleting Project.Rights.dll is the opposite of what you want. You need to make sure your project can reference the assembly. So it must either be placed in the Global Assembly Cache or your web application's ~/Bin directory.
Edit-If you don't want to use the assembly, then deleting it is not the proper solution either. Instead, you must remove all references to it in your code. Since the assembly isn't directly needed by code you've written, but instead by something else you're referencing, you'll have to replace that referenced assembly with something that doesn't have Project.Rights.dll as a dependency.
In my case, I was referencing a library that was being built to the wrong Platform/Configuration (I had just created the referenced library).
Furthermore, I was unable to fix the problem in Visual Studio Configuration Manager -- unable to switch and create new Platforms and Configurations for this library. I fixed it by correcting the entries in the ProjectConfigurationPlatforms section of the .sln file for that project. All its permutations were set to Debug|Any CPU (I'm not sure how I did that). I overwrote the entries for the broken project with the ones for a working project and changed the GUID for each entry.
Entries for functioning project
{9E93345C-7A51-4E9A-ACB0-DAAB8F1A1267}.Release|x64.ActiveCfg = Release|x64
{9E93345C-7A51-4E9A-ACB0-DAAB8F1A1267}.Release|x64.Build.0 = Release|x64
Entries for corrupted project
{94562215-903C-47F3-BF64-8B90EF43FD27}.Release|x64.ActiveCfg = Debug|Any CPU
{94562215-903C-47F3-BF64-8B90EF43FD27}.Release|x64.Build.0 = Debug|Any CPU
Corrupted entries now fixed
{94562215-903C-47F3-BF64-8B90EF43FD27}.Release|x64.ActiveCfg = Release|x64
{94562215-903C-47F3-BF64-8B90EF43FD27}.Release|x64.Build.0 = Release|x64
I hope this helps someone.
It just happened to me that different projects were referencing different copies of the same dll.
I made sure all referenced the same file on disk, and the error disappeared as I expected.
Unloading and reloading the class library in Visual Studio solved this for me.
For me, this was caused by the project both directly and indirectly (through another dependency) referencing two different builds of Bouncy Castle that had different assembly names. One of the Bouncy Castle builds was the NuGet package, the other one was a debug build of the source downloaded from GitHub. Both were nominally version 1.8.1, but the project settings of the GitHub code set the assembly name to BouncyCastle whereas the NuGet package had the assembly name BouncyCastle.Crypto. Changing the project settings, thus aligning the assembly names, fixed the problem.
It didn't work for me when I've tried to add the reference from the .NET Assemblies tab.
It worked, though, when I've added the reference with BROWSE to C:\Windows\Microsoft.NET\Framework\v4.0.30319
I had this issue on a newly created solution that used existing projects. For some reason, one project could not "see" one other project, even though it had the same reference as every other project, and the referenced project was also building. I suspect that it was failing to detect something having to do with multiple target frameworks, because it was building in one framework but not the other.
Cleaning and rebuilding didn't work, and restarting VS didn't work.
What ended up working was opening a "Developer Command Prompt for VS 2019" and then issuing a msbuild MySolution.sln command. This completed successfully, and afterwards VS started building successfully also.
one of main reason can be the property of DLL
you must before do any thing to check the specific version property if it true make it false
Reason:
maybe the source code joined with other (old)version when you build it , but this Library upgraded with new update the version now different in the Assembly Cash and your application forbidden to get new DLL ,and after disable specific version property your applacaten will be free to get the new version of DLL references
Maybe a library (DLL file) you are using requires another library. In my case, I referenced a library that contained a database entity model - but I forgot to reference the entity framework library.
This can also mean you use a library, which exposes (public) types that are defined in a library. Even when you do not use these specifically in your library (the one that doesn't build).
What this probably prevents is you writing code that uses a class (which in its signature has the types from a library not referenced) that you cannot use.
For me the reason why the error appeared was that the WebForm where the error was reported has been moved from another folder, but the name of its codefile class remained unchanged and didn't correspond to the actual path.
Initial state:
Original file path: /Folder1/Subfolder1/MyWebForm.aspx.cs
Original codefile class name: Folder1_Subfolder1_MyWebForm
After the file was moved:
File path: /Folder1/MyWebForm.aspx.cs
Codefile class name (unchanged, with the error shown): Folder1_Subfolder1_MyWebForm
The solution:
Rename your codefile class Folder1_Subfolder1_MyWebForm
to one corresponding with the new path: Folder1_MyWebForm
All at once - problem solved, no errors reporting..
The type 'Domain.tblUser' is defined in an assembly that is not
referenced. You must add a reference to assembly 'Domain,
Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.
**Solved:**
Add reference of my domain library layer to my web app libary layer
Note: Make sure your references are correct according to you DI container
In my case this was because I used
Implicit Operator
between BLL and DAL classes.when I want to use BLL Layer In Application Layer I got this error.
I changed
implicit operator
to
explicit operator
it be OK.
Thanks
In my case the version of the dll referenced was actually newer than the one that I had before.
I just needed to roll back to the previous release and that fixed it.
I have a similar problem, and I remove the RuntimeFrameworkVersion, and the problem was fixed.
Try to remove 1.1.1 or
My problem was that the Output Type for one of my projects was set to Console Application. To fix this, I right-clicked the project, chose Properties, clicked the Application tab, and change Output Type (from Console Application) to Class Library. After I re-compiled, this error went away.
Clean your solution and rebuild worked for me (in Visual Studio, these are options you get when you right click in your solution explorer), the error is gone in my project.
Using .NET Web API (.NET 4, EF 4) and I'm getting some strange errors when debugging and really can't figure what is going on.
Say in the DocumentRepository I have this constructor:
public DocumentRepository(DocPortalContext db)
{
this._db = db;
}
If I debug and hover over _db and drill into the items in the popup window I'm coming across the following errors:
System.Data.Entity.Infrastructure.IObjectContextAdapter.ObjectContext = 'System.Data.Entity.DbContext' does not contain a definition for 'System' and no extension method 'System' accepting a first argument of type 'System.Data.Entity.DbContext' could be found (are you missing a using directive or an assembly reference?)
and
System.Collections.Generic.ICollection>.IsReadOnly = 'System.Collections.Generic.Dictionary' does not contain a definition for 'System' and no extension method 'System' accepting a first argument of type 'System.Collections.Generic.Dictionary
No exceptions are being caught.
If I put a break point on this line in a repository method - return _db.Documents.AsQueryable(); - and hover over Document I get the following error:
System.Linq.IQueryable.Provider = 'System.Data.Entity.Infrastructure.DbQuery' does not contain a definition for 'System' and no extension method 'System' accepting a first argument of type 'System.Data.Entity.Infrastructure.DbQuery' could be f...
Some help would be much appreciated.
Additional information:
Drilling into _db in the following way gives message quoted at the end:
base(System.Data.Entity.DbContext) -> Internal Context -> _appConfig -> and finally Default Connection Factory has the following error beside it "The function evaluated requires all threads to run."
More information as per my comment:
This isn't really related to the question, but it has me thinking there could be something wrong with my install of .NET or VS - I don't know enough about the pipework to make that call, maybe one of you can. Anyway, I can browse to a URI in my WebAPI project and get JSON returned in the browser. When I try to consume the URI in my Website project, I get this in my browser: Could not find file 'C:\Program Files (x86)\IIS Express\System.Net.Http.StreamContent'. which is also caught as an exception.
By default EF 4 generates proxy classes on the fly that inherit from your POCO classes or your model first classes. That is most likely why you get these errors on runtime. The odd things is that all required usings should be included.
Are you sure you reference System in your POCO classes (presuming you have POCO classes)?
Do all projects in your solution have the same .NET version setup in project's properties?
Do those versions agree with the version on the MSDN describing the missing classes?
Try registering your entity-framework dll and sql-server dll in global assembly cache using gacutil.exe from visual studio command prompt
I had come across this issue recently on a small sample application where we just included nuget packages and created some data layer objects. This is what we did and it solved the issue
Make sure temp folders for .net are clean . usually in asp.net temporary files in windows directory.
Make sure your visual studio is upto date and not requiring a restart due to nuget reinstall. Not sure if it solved or did help but i checked this as well and restarted vs.
Clean the projects and made sure that dlls are present. if you are using some webmatrix dll for asp.net simple membership make sure you have selected to copy it locally. This was one issue when we were seeding data for roles and members for mvc4 simple membership use but may not be the case for your project.
We also checked that in web projects the configuration for ef corresponds to proper version of ef.
Build the solution and run it after a vs 2012 restart and it worked fine. Now I dont know exactly which of these things helped in resolving this issue but doing all 4 worked in one case.
Just thought to share if it helps.
These look like issues relating to an incompatibility between your project's target .Net version and the build version of the assembly you're referencing.
In this instance, you should make sure that the assembly you are referencing is less than or equal to your project's target .Net Framework version.
I have seen this message numerous times. 9 times out of ten, this means that there is a likely problem with the App.config file. Usually, it is just missing. In other words, for every project folder you have referencing the Entity Model you need to place a copy of that App.config file within it. If they are already there, then delete the App.config file that partners the edmx file, and recompile the Entity Model separately to regenerate it. (DON'T DELETE THE EDMX FILE or THE DESIGNER CLASS) Then you have to replace all the App.config's again. Yes, it sucks!!! Sometimes, LinqPad is great for checking this issue too. You can reference the dll file in LinqPad and attempt to run queries giving you the same error message letting you know that the problem is not just Visual Studio.
Hope this helps...Good Luck!!!!
How are you implementing your repository? Seems to me that maybe the problem is that your application is running on a different thread than your repository and that might be the answer for the "The function evaluated requires all threads to run." message.
Using Visual Studio 2010 to build a setup project that installs a Windows Forms application .Net 4.0 C#. It has worked fine for ages but now when I'm trying to install the finished setup file, I'm getting this error message:
Error 1001. Unable to get installed types in the "Path" assembly. -->
Unable to load one or more of the requested types. Retrieve the
LoaderExceptions property for more information.
I have been searching for answers for over 4 hours now without finding anything. This problem just came without me doing anything. Last time I build the install file was like 2 weeks ago and there was NO problem at all. I haven't deleted any reference or any code that have anything to do with the setup project.
How could this problem appear from nothing and more important, how do I fix it?
Based on the error message in your second comment, it appears that your SysDir.exe assembly has been added as a Custom Action with the InstallerClass property set to true, but either no installer classes could be found in the exe or the exe could not be loaded due to missing dependencies.
You can see the list of Custom Actions by right-clicking on the installer project, selecting View and then Custom Actions.
If your exe does not can an installer class, then you can remove it from the list of custom actions.
If it does contain an installer class, then the issue is going to be missing dependencies. If fuslogvw doesn't work for you (it has always helped resolve this kind of issue for us), you can carefully review the list of references in the exe's project and compare them to what is listed in the installer project.
The other trick that we use is to examine the install directory while the error message is displayed on the screen. We can often see that DLLs are missing by doing this, usually because the path was entered incorrectly in the DLL entry within the installer project or because a condition was set incorrectly.
Have the same error today. For me it was the project type of the class library.
I noticed that the pucture on the guide I was following had selected Class Library (.NET Framework) instead of just Class Library.
Creating the correct project type fixed the error.
https://nhvu1988.com/posts/how-to-create-msi-installer-using-vs-installer/
I'm trying to recreate a solution that had multiple projects in it (only the cs, aspx, etc, remain). When I create a blank solution and blank project files and start re-adding things, I receive the following compiler errors numerous times:
The type or namespace name 'Activation' could not be found (are you missing a using directive or an assembly reference?)
The Activation class is defined in a Activation.cs file that is in a sub folder to the cs file that is using it. I've added and included the files in the project...
The website currently works in production as is, so I'm wondering what type of reference I need...
The following is the structure
Solution
Project1
FileUsingActivation.cs
Folder1
Activation.cs (which contains the class being used in FileUsingActivation.cs that the compiler is complaining about
Edit 1: Just a note that Visual Studio can't resolve the class name, meaning it currently has a squiggly line under the class1 : Activation (Activation portion). But the file is definately included in the project, it's just under another sub folder... I mean I know it won't compile because VS can't resolve the name, but I'm wondering why....
Edit 2: If I add the file to the root of the project, the class name highlights blue, the squiggly goes away as does the error.... so I can't keep the existing folder structure in the project for some reason????
long shot: check for compiler conditionals (like #if some_condition/.../#endif);
Your build configurations might have contained them.
Also, check that the build action is 'compile' for the build configuration that you're trying to build.
Build configurations: MSDN
Conditional Compilation: MSDN
Could be a few things, but given your context...
Are you using .NET 4/VS 2010? The default "Target Framework" for projects is .NET Framework 4 Client Profile, but if you are referencing another project that is the full .NET Framework 4 you'll get this un-informative build error.
To fix this, right-click on your project, click "Properties", and under the "Application" tab set the target framework to .NET Framework 4 (and not .NET Framework 4 Client Profile).
EDIT: For anyone else who stumbles on this question/answer, the above solution will work for you if your classes appear to be included/working while editing (highlighted light blue, etc), and you can right-click "Go-to Definition" for it, but then it gives build errors as if it could not be resolved.