EntityFramework.sqlServer dll not found - c#

We have ASP.NET WebSite and it refers project (dll) which refer EntityFramework dll. We have added EntityFramework.dll and EntityFramework.SqlServer.dll reference to bin folder manually(not through Nuget). We are using Octopus to deploy our websites. While deploying we dont have EntityFramework.SqlServer dll in bin folder. I have gone through various answers but couldn't get it.
Anybody know the answer on the same? I have tried publishing through VS and I see SqlServer of EF in bin folder. Surprisingly we dont have any reference entry in our web.config for EF dll version.
Not sure about adding below code which some of them suggested -
var ensureDLLIsCopied = System.Data.Entity.SqlServer.SqlProviderServices.Instance;
Error Message-
ERROR occurred in LockAutomationNotification.NotifyEmail
System.Data.Entity.Core.MetadataException: Schema specified is not valid. Errors:
OLIEDataModel.ssdl(2,2) : error 0152: No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlClient'. Make sure the provider is registered in the 'entityFramework' section of the application config file. See

Answer to your first question is here. It is happening as EntityFramework.SqlServer.dll is referenced internally by EntityFramework.dll but not your project code.
The new error you're getting is because of your missing configurations. Please add below settings in web.config file of your website:
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework" />
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
</configuration>

Related

Cannot connect asp.net web forms to local mySQL db

I have wasted nearly a month trying to resolve this issue and have had no luck. I think I have tried everything I can find in the forums.
So at the moment all I want to be able to do is have my asp.net web forms connect to my local database and to be able to use the asp.net Identity.
I am using Visual Studio Community 2017 (Version 15.9.3) and have downloaded the latest MySQL Workbench 8.0 (Version 8.0.13) also downloaded the latest MySql.Data.dll (Version 8.0.11.0).
So that I can be sure that it is not something I have done else where in my project I have created a new asp.net web app (.net framework). I have selected web forms and changed the Authentication to Individual User Accounts.
In web config I have changed the following:
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<connectionStrings>
<add name="DefaultConnection" connectionString="server=localhost;User Id=root;password=****;database=testdb" providerName="MySql.Data.MySqlClient" />
</connectionStrings>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
<provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6, Version=6.8.3.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d"></provider>
</providers>
</entityFramework>
Within mysql workbench I have created a new Schema called testdb.
When I run the project I get this error
System.InvalidOperationException: 'The Entity Framework provider type 'MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6, Version=6.8.3.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' registered in the application config file for the ADO.NET provider with invariant name 'MySql.Data.MySqlClient' could not be loaded. Make sure that the assembly-qualified name is used and that the assembly is available to the running application. See http://go.microsoft.com/fwlink/?LinkId=260882 for more information.'
I have followed the link the error gives me but I am not sure exactly what it is telling me, I know some people will tell me it is given me the answer but I have spent so much time reading it I have no idea what it is telling me now. I am not asking for people to give me the but I really do need some help.
Edit:
Thank you Bradley and SH7 that got the web site started with out an error, now I am not sure if I need to start a new question here, but when I click on Register and enter my email and password it gives me this error.
System.Data.Entity.Core.EntityCommandExecutionException: 'An error occurred while executing the command definition. See the inner exception for details.'
MySqlException: Table 'testdb.aspnetusers' doesn't exist
Yes I know that means that the table does not exists, but I was under the impression that when you first register a user it would create all the tables needed for Identity.. While I am waiting for help I will add a new table and see if I can connect to that.

Entity Frame Work always return null

I'm created windows service where I have problem in calling query using entity frame-work inside this service, its always return null.
I tried to reinstall entity-framework package from NuGet but nothing happend.
this is my app.config file part:
<add name="GPSContext" connectionString="data source=server_name;initial catalog=dbName;user id=username;password=****;MultipleActiveResultSets=True;App=EntityFramework" providerName="System.Data.SqlClient" />
and (
The Entity Framework provider type 'System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer' registered in the application config file for the ADO.NET provider with invariant name 'System.Data.SqlClient' could not be loaded.
) run time error returned when I configured my entity-framework:
<configSections>
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="mssqllocaldb" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
You can do a couple of things...
Make sure you have both EntityFramework and EntityFramework.SqlServer added to the references of the calling assembly.
If this will not fix your problem you can delete the BIN folder and try again.
If this still isn't working add the following code somewhere in your calling assembly
internal static class MissingDllHack
{
// Must reference a type in EntityFramework.SqlServer.dll so that this dll will be
// included in the output folder of referencing projects without requiring a direct
// dependency on Entity Framework. See http://stackoverflow.com/a/22315164/1141360.
private static SqlProviderServices instance = SqlProviderServices.Instance;
}
the compiler sometimes removes the entityFramework.SqlServer.dll if its not referenced! You do not need to do anything with this code!

Entity Framework provider error

Hello guys I am strugling with connecting to sql database server. I am using Entity framework v6 and trying code first approach for the first time. Below I will show you my app.config file and error message I get I checked out similar questions and most of answers were about missing EntityFramework.SqlServer.dll I have this dll referenced
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
</startup>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="mssqllocaldb" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
<connectionStrings>
<add name="HotelDB"
connectionString="Data Source=(localdb)\v11.0;Initial Catalog=master;Integrated Security=True;Connect Timeout=30;Encrypt=False;TrustServerCertificate=True;ApplicationIntent=ReadWrite;MultiSubnetFailover=False"/>
</connectionStrings>
</configuration>
Error Message:
System.InvalidOperationException: No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlClient'. Make sure the provider is registered in the 'entityFramework' section of the application config file. See http://go.microsoft.com/fwlink/?LinkId=260882 for more information.
Have you found a solution for this problem? Otherwise you could take a look here: Entity Framework Provider type could not be loaded?
Most of the time when I see this exception it's because the web application doesn't have Entity Framework installed (and / or missing the EntityFramework.SqlServer.dll).
So to give an example, if you have 2 projects in a solution:
WebApp
DataAccess
and with Entity Framework installed in the DataAccess project. When wanting to call a method on a class (for example a repository) from the DataAccess project within the WebApp, 2 things are needed:
WebApp needs a reference to DataAccess
Webapp also needs EF to be installed
When DataAccess has EF installed and then added as a reference to WebApp, the WebApp project will (normally) also install EF. Sometimes in unexpected situations the installation of EF in the WebApp fails. Therefore not adding the needed references and showing the exception message you mentioned. Hopefully this answer will help some others.
I also had a similar problem
My problem was solved by doing the following:
If nothing of the solutions worked then check both the packages.config of WebApp and DataAccess for the version of Entity Framework. In case you see or don't see the entry of EF in the packages.config file of WebApp, go to the reference and delete the EF from WebApp and install it again using the package manager console giving the following command:
Install-Package "EntityFramework" -Version (Version number)
where Version number is the version that's present in the packages.config of DataAccess.
Example:
Install-Package "EntityFramework" -Version "6.1.3"

Getting an error from Entity Framework(type initializer exception)

I' am getting this:
The type initializer for 'System.Data.Entity.Internal.AppConfig' threw an exception.
error in my Entity Framework.
I read this Question and the possible answers, however non of them worked for me. Here is my App.config file:
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<connectionStrings>
<add name="SalesReportEntities"
connectionString="metadata=res://*/SalesReportModel.csdl
|res://*/SalesReportModel.ssdl
|res://*/SalesReportModel.msl;
provider=System.Data.SqlClient;
provider connection string="data source=.;
initial catalog=Training;
integrated security=True;
MultipleActiveResultSets=True;
App=EntityFramework""
providerName="System.Data.EntityClient" />
</connectionStrings>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="v11.0" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
</configuration>
What other possible things can cause this error?
I can offer a few suggestions and some are similar to the thread you already looked at:
Can you use SQL Management Studio and verify this database exists and has tables and is currently in a responsive state?
Put your 'connectionStrings' section after the < providers > node.
Your parameter value is 'v11.0' which seems to be targeting a version of SQL Server 2012. Mine that I am looking at now is similar to yours but just states: "mssqllocaldb". Which I believe is just the default instance of sql server from the connection you specify.
Uninstall Entity Framework completely and get it again from NuGet. I assume you are using Visual Studio so in 2015 it is Tools>NuGet Package Manager>Manage NuGet Packages. Uninstall, check your app config and 'References' that 'EntityFramework' is gone. Reinstall and check your settings again.
Are you trying to reference a project that entity lives in in another project or is it self contained? If so you need to target EF just like you were on the source project with adding EF to that project and a config the same.
You may also want to post the entire exception for better answers too.

No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlClient'.

We are using EntityFramework 6 with Code First. We have a console app that has no reference to EntityFramework but reads the connection string from its App.config. It calls the DatabaseInitializationUtilities assembly passing the connection string as a parameter.
DatabaseInitializationUtilities has the reference to EF6 (EntityFramework and EntityFramework.SqlServer). Its App.config is this:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<system.serviceModel>
<bindings>
<basicHttpBinding>
<binding name="BasicHttpBinding_IAuthentication" />
</basicHttpBinding>
</bindings>
<client>
<endpoint address="http://localhost/SecurityServices/Authentication.svc" binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IAuthentication" contract="SecurityService.IAuthentication" name="BasicHttpBinding_IAuthentication" />
</client>
</system.serviceModel>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="v11.0" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
</configuration>
When execution reaches a line where DatabaseInitializationUtilities attempts to run a script
context.Database.ExecuteSqlCommand(script.ScriptText)
the error is thrown:
No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlClient'. Make sure the provider is registered in the 'entityFramework' section of the application config file. See http://go.microsoft.com/fwlink/?LinkId=260882 for more information.
I believe the remedy is exactly what I have in my config file, so I don't understand the problem.
NOTE: Resharper is bluelining the node and reporting
"The element 'EntityFramework' has an invalid child element 'providers'. However, the section was injected by NuGet when I installed EF6.
Any ideas?
You need to create a reference, so it will be copied in the debug folder. So later it can accessed in runtime.
Don't to copy any files, just create this reference:
private volatile Type _dependency;
public MyClass()
{
_dependency = typeof(System.Data.Entity.SqlServer.SqlProviderServices);
}
do you have the assembly EntityFramework.SqlServer.dll in your application path?
I had the same Problem and after copying the dll into the application path every Thing worked fine.
Finally found the answer in this blog:
http://robsneuron.blogspot.com/2013/11/entity-framework-upgrade-to-6.html
I had this problem too. Everything worked locally when I ran my .net mvc app but when I published it I got this error. The problem was that I had to reference the EntityFrameworl.SqlServer also in my web project alhough I had seperate project for Data. What is strange is that this error was only thrown when app was published. This is some serious bug probably from Microsoft. I used EF 6.1.1.
This is because EntityFramework.SqlServer.dllis not copied into your project. Add that dll and it will hopefully work.You can find that from the project where you added datamodel.
For me it turned out that my provider reference in the web.config file was incorrect. I believe that the nuget package might not properly include the provider.
I replaced my provider with this and it worked:
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
I also had a similar problem
My problem was solved by doing the following:
The best way to get ride of such a kind of problem is to include the reference EntityFramework.SqlServer.dll into your project the press F4 (op the properties) change the property to Copy to Local =True so each and every time when publish the app it will be copied to the published folder.
I tend to add EntityFramework to the web project as well as the assembly that actually references it.
Add "EntityFramework.SqlServer.dll" into your project bin folder will resolved your issue.

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