I have a similar problem as the one presented in the question
No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlClient', the error has the following message:
"The ADO.NET provider with invariant name 'System.Data.SqlClient' is either not registered in the machine or application config file, or could not be loaded. See the inner exception for details."
As the answers to the related question suggest, I have reinstalled Entity Framework (EF6) via the Package Manager Console, but the error persists. I also checked that EntityFramework.SqlServer.dll is referenced in my project.
Here is the connection string as stored in App.config:
<add name="DesignModel" ConnectionString="metadata=res://*/DesignModel.csdl|res://*/DesignModel.ssdl|res://*/DesignModel.msl;provider=System.Data.SqlClient;provider connection string="data source=C071E;initial catalog=CTD2;integrated security=True;multipleactiveresultsets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
I have another project where I used EntityFramework to create the exact same entities and context, and it works fine, which makes this all more puzzling.
The error is shown when trying to execute this lines:
DesignModel designContext = new DesignModel();
designContext.MoPerfIDs.Load();
where DesignModel is the name of the class that inherits DbContext.
Here's the full App.config:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<section name="ppe.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</sectionGroup>
<!-- 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="DesignModel" connectionString="metadata=res://*/DesignModel.csdl|res://*/DesignModel.ssdl|res://*/Design Model.msl;provider=System.Data.SqlClient;provider connection string="data source=MONNMC071E;initial catalog=CTD2;integrated security=True;multipleactiveresultsets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
</connectionStrings>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework">
<parameters>
<parameter value="System.Data.SqlClient" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
</configuration>
Any help will be appreciated. Thanks in advance.
You need to register the Entity Framework provider for the System.Data.SqlClient SQL connection type.
you should have in app.config:
<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">
<parameters>
<parameter value="v11.0" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
Still not sure what was causing the problem, but ended up creating a new solution and copying everything from my project. Now works fine. Really weird, indeed.
Simply install "MySql.Data.Entity" from nuget! It will install mysql ado driver and entity driver automatically!
Wow...that is pretty special...Anyways. You need to register the Entity Framework provider for the System.Data.SqlClient SQL connection type.
You want to add the following to your app.config/web.config
<configuration>
<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.SqlConnectionFactory, EntityFramework">
<parameters>
<parameter value="System.Data.SqlClient" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
</configuration>
There are 2 options which you can try.
1) Load "System.Data.SqlClient" manually
Include the follow statement in your context class
var type = typeof(System.Data.Entity.SqlServer.SqlProviderServices);
2) Don't load "System.Data.SqlClient"
By change from
<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>
to
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="v11.0" />
</parameters>
</defaultConnectionFactory>
I hope your issue is resolved.
Try adding
var _ = System.Data.Entity.SqlServer.SqlProviderServices.Instance;
in the ctor of your designContext.
The problem in my case was that inorder to catch another exception I had enabled CLR exceptions. And I forgot to disable it.
I disabled it in my exception setting. and it overlooked this exception and went on to run and create a db for me (in my case) automatically.
I got this error but for me it was something entirely different.
I had to edit:
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config\machine.config
And:
C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.config
Searching for DbProviderFactories both configs looked like this:
<system.data>
<DbProviderFactories>
<add name="IBM DB2 for i .NET Provider" invariant="IBM.Data.DB2.iSeries" description=".NET Framework Data Provider for IBM i" type="IBM.Data.DB2.iSeries.iDB2Factory, IBM.Data.DB2.iSeries, Version=12.0.0.0, Culture=neutral, PublicKeyToken=9cdb2ebfb1f93a26" />
</DbProviderFactories>
<DbProviderFactories />
</system.data>
When I removed the trailing <DbProviderFactories /> everything started working again.
I was able to solve it by looking at only Unable to find the requested .Net Framework Data Provider and finding this answer:
https://stackoverflow.com/a/9929534/3850405
If you get this error on Visual Studio while debugging, this happens after you installed another DB provider or IDE with DB Provider. I faced this error after I installed Delphi on my computer.
Solution: Just edit C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.config and remove tags.
Related
ProjectA includes EF code, and is normally hosted in MVC project. Now I'd like to "wrap" it in a Azure (v1) function (lets call ProjF), in order to expose on a consumptionplan (so we can scale the heavy calls).
So I ref ProjA, fine. But how to get all the EF settings over? Connectionstring goes via fina via host.settings.json, but the remaining from web.config ?
(notice we use PostgresSql and Devart). Since the azure function has no app.config or web.config, these settings has to be set elsewhere.
Relevant sections from web.config:
<configSections>
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
and
<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="Devart.Data.PostgreSql" type="Devart.Data.PostgreSql.Entity.PgSqlEntityProviderServices, Devart.Data.PostgreSql.Entity.EF6, Version=7.12.1328.0, Culture=neutral, PublicKeyToken=09af7300eec23701" />
</providers>
</entityFramework>
<system.data>
<DbProviderFactories>
<remove invariant="Devart.Data.PostgreSql" />
<add name="dotConnect for PostgreSQL" invariant="Devart.Data.PostgreSql" description="Devart dotConnect for PostgreSQL" type="Devart.Data.PostgreSql.PgSqlProviderFactory, Devart.Data.PostgreSql, Version=7.12.1328.0, Culture=neutral, PublicKeyToken=09af7300eec23701" />
</DbProviderFactories>
</system.data>
Have looked at the solution from
How to specify EntityFramework ProviderName in an Azure Function
but cannot figure out what values to use since we're using Postgres + Devart
When app.config is not available, you can add register DbProviderFactory and EF6 provider via code. An example is here: https://forums.devart.com/viewtopic.php?t=28550#p97525.
I have c# winfrm project with Local database. I created setup File with attaching database.
But I get following error.
A file activation error occurred. The physical file name 'InventoryDb.mdf' may be incorrect. Diagnose and correct additional errors, and retry the operation.
It's working fine in the same computer as I have my project, but not in othet Windows 7 whe nI install it.
This is my connection string in App.config page
<?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=v4.6.1" />
</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="Db" connectionString="Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\InventoryDb.mdf;Integrated Security=True;Connect Timeout=30; MultipleActiveResultSets=True"
providerName="System.Data.SqlClient" />
</connectionStrings>
</configuration>
I wonder what is I'am missing? Do I have wrong connectionstring? I would appricate for your help.
I have a simple console app with EF6, my PC has localdb v13 and when I try to connect to the EF database, I get this error
{"Cannot open database \"NinjaDomain.DataModel.NinjaContext\" requested by the login. The login failed.\r\nLogin failed for user 'xx\\xx.yy'."}
this is the app.config
<?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>
</configuration>
It is does not matter Console app might also have an App.config, normally if you have installed EF from Package Manager Console like that:
install-package entityframework
The app.config will be automatically added to your project file.
This is the default connection string, if the do not have it the app.config (related to EF v 6.1.3)
"Data Source=(localdb)\\mssqllocaldb;Initial Catalog=MyConsoleApplication.Program+MyDbContext;Integrated Security=True;MultipleActiveResultSets=True"
Below, I have changed the app.config (If you do not have you can just add it to your project) and I have provided the connection string
<?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=v4.6.1" />
</startup>
<connectionStrings>
<add name="DatabaseConnectionString"
connectionString="Integrated Security=SSPI; Initial Catalog=UsersDatabase5; Data Source=.\;" providerName="System.Data.SqlClient" />
</connectionStrings>
<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>
</configuration>
You should pass the connection string to the DbContext constructor with 'name' keyword like that:
using (var myDbContext = new MyDbContext("name=" + "DatabaseConnectionString"))
{
....
I have used the normal SQL Server in my app.config example:
Data Source=.\;
You can change it:
Data Source=(localdb)\\mssqllocaldb;
or just check your SQL Server instance name (use SSM or command line).
Good evening everyone. I try to use SQL Server Compact Edition and Entity Framework in simplest console application. But I get the following exception.
The Entity Framework provider type
'System.Data.Entity.SqlServerCompact.SqlCeProviderServices,
EntityFramework.SqlServerCompact' registered in the application config
file for the ADO.NET provider with invariant name
'System.Data.SqlServerCe.4.0' 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.
So I started find the answer in the internet. After googling I found the following answers in StackOverflow:
No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlServerCe.4.0'
I did the following configuration file.
<?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" />
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
</configSections>
<connectionStrings>
<add name="SQLCE.DAL.BreakAwayContex" providerName="System.Data.SqlServerCe.4.0" connectionString="Data Source=D:\TestDatabase.sdf" />
</connectionStrings>
<entityFramework>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
<provider invariantName="System.Data.SqlServerCe.4.0" type="System.Data.Entity.SqlServerCompact.SqlCeProviderServices, EntityFramework.SqlServerCompact" />
</providers>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlCeConnectionFactory, EntityFramework">
<parameters>
<parameter value="System.Data.SqlServerCe.4.0" />
</parameters>
</defaultConnectionFactory>
</entityFramework>
</configuration>
But I still have this exception. So how can I fix it? Thank you very much for answer or your device.
Have a nice evening.
i have a project that is been started two months ago ! i'm using [LASG]:https://layerguidance.codeplex.com/ Architecture for my Solution !
i'm working in my solution well since i have received the " No Entity Framwork provider found for the ADO.net Provider with invarient name 'System.Data.SqlClient' "
the application config file contain the full block of provider
this is my app.config file :
<?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>
<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="MASTERGESTION" connectionString="Data Source=ZZZZ\ZZZZZ;Initial Catalog=XXXXXX;User ID=YY;Password=ZZZZZZ" providerName="System.Data.SqlClient" />
</connectionStrings>
</configuration>
I copied the project in other computer, after building the solution, it start normally and without provider error
I rebuild the solution many times, i re-add references manually with no response!
Any help please? i loose six hours for no reason
The defaultConnectionFactory shouldn't be:
System.Data.Entity.Infrastructure.LocalDbConnectionFactory
Instead make it:
System.Data.Entity.Infrastructure.SqlConnectionFactory
I assume it worked on the second machine as that has LocalDb installed and the first one doesn't.
Try instead of
User ID=YY;Password=ZZZZZZ
to use
Integrate Security=True
also add in <context>
<context type="tablename, databasename">
<databaseInitializer type="databasename.Migrations.tablenameInitializer, databasename" />
</context>