No Entity Framework provider found for 'MySql.Data.MySqlClient' ADO.NET provider

Question

I'm trying to use Entity Framework with MySQL and I get the above error. I have the latest MySQL connector installed.

The full error reads:

No Entity Framework provider found for 'MySql.Data.MySqlClient' ADO.NET provider. Make sure the provider is registered in the 'entityFramework' section of the application config file.

However, I can't find anything that suggests just how you register it in the 'entityFramework' section.

Some other posts (example) suggest adding the provider to the system.Data DbProviderFactories section like this:

<DbProviderFactories>
  <add 
    name="MySQL Data Provider"
    invariant="MySql.Data.MySqlClient"
    description=".Net Framework Data Provider for MySQL"
    type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, 
    Version=6.2.3.0, Culture=neutral, 
    PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>

But that doesn't work because it claims that the invariant name is duplicated. And, if I actually iterate through the System.Data.Common.DbProviderFactories I can see the last one is the MySQL provider:

MySQL Data Provider
.Net Framework Data Provider for MySQL
MySql.Data.MySqlClient
MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.6.5.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d

So the provider is there, but EF refuses to use it. Any ideas?

My full config looks like this:

<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.data>
   <!--<DbProviderFactories>
   <add 
    name="MySQL Data Provider"
    invariant="MySql.Data.MySqlClient"
    description=".Net Framework Data Provider for MySQL"
    type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, 
    Version=6.2.3.0, Culture=neutral, 
    PublicKeyToken=c5687fc88969c44d" />
   </DbProviderFactories>-->
</system.data>

<connectionStrings>
    <add name="myContext" connectionString="server=****;User Id=****;password=****;Persist Security Info=True;database=myDb"
  providerName="MySql.Data.MySqlClient" />
</connectionStrings>
<startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>

<entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="v11.0" />
      </parameters>
    </defaultConnectionFactory>

</entityFramework>

</configuration>

score 34 · Answer 1 · answered Mar 04 '14 at 08:23

34

in EF5 or less, all ok. in EF6, you need to use mysql connector 6.8.x, and add DbConfigurationTypeAttribute to you DbContext:

[DbConfigurationType(typeof(MySql.Data.Entity.MySqlEFConfiguration))]
public class DemoContext : DbContext{}

which MySqlEFConfiguration is in MySql.Data.Entity.EF6.dll in 6.8.x. Have a try!

answered Mar 04 '14 at 08:23

AlexanderYao

437
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5

It works, but sucks as a solution because then code will depend on MySQL instead of just configuration... – mycroes Aug 11 '14 at 09:38
3

Adding the attribute definitely solved my problem, but it is a pain having the MySQL dependency in code. Better approach would be to add this configuration as follows: – Denis Stepanenko Apr 22 '16 at 15:12
I had the correct config but started seeing this error. I began changing my configuration according to the variations, but nothing worked. Then I closed VS.NET and reopened the solution and it all worked again. – Nicholas Dec 12 '16 at 21:53
Thanks buddy you save my day. – Prashant Dec 18 '18 at 12:28

Der_Meister · Answer 2 · 2015-04-21T06:25:30.587

30

You need to create this section in config (EF 5):

<entityFramework>
  <!-- ... -->
  <providers>
    <provider invariantName="MySql.Data.MySqlClient"
              type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity" />
  </providers>
</entityFramework>

Update: Use this definition for EF 6:

<entityFramework>
  <!-- ... -->
  <providers>
    <provider invariantName="MySql.Data.MySqlClient"
              type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6" />
  </providers>
</entityFramework>

Thanks to elcool.

edited Apr 21 '15 at 06:25

answered Nov 11 '13 at 04:36

Der_Meister

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EF6 is now supported. I'm using connector 6.9.6, and in your code replace MySql.Data.Entity with MySql.Data.Entity.EF6 . And add the reference. – elcool Mar 26 '15 at 05:04
Adding this is what did the trick for me. Thanks – stephen ebichondo Oct 27 '15 at 08:48
Great ! Thanks . Save my time to configure the error. – Umesh Sehta Mar 17 '17 at 08:39

Alfredo Rodriguez · Answer 3 · 2017-11-27T15:12:33.743

I just had the same situation when trying to configure Visual Studio Professional 2017 environment with MySQL, ADO.NET (Database First) and EF6.

After going through hell with every connector/NET available, I got it to work with Connector/NET v6.9.10 and following the steps below.

Uninstall/remove "Connector/NET" and "MySQL for Visual Studio" if installed.
Install "MySQL for Visual Studio" v2.0.5 CTP (MySQL for Visual Studio). Note: Install MySQL for Visual Studio before Connector/NET.
Install "Connector/NET" v6.9.10 (Connector/Net). https://i.stack.imgur.com/XOT1I.jpg Note: I tried using Connector/NET v6.8, v6.10 and v8 first, but none of them worked Here you can find all Connector Versions and Compatibilities with Visual Studio IDEs, but so far this list is inaccurate.
Download and Install "EntityFramework" v6.2.0 through NuGet.
Add references to C:\Program Files (x86)\MySQL\Connector.NET 6.9.10\Assemblies\v4.5\MySql.Data.dll and C:\Program Files (x86)\MySQL\Connector.NET 6.9.10\Assemblies\v4.5\MySql.Data.Entity.EF6.dll.
Add MySQL EF6 provider info inside App.config under entity framework providers as follow:

<entityFramework>
       <providers>
         <provider invariantName="MySql.Data.MySqlClient"
              type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6" />
       </providers>
</entityFramework>

Rebuild project.

And that was it. VS2017 was ready to go for me. Hope this works for everybody, as it did for me today.

References:

comments are never supposed to be in answer section. – Mathews Sunny Nov 26 '17 at 16:56 — Mathews Sunny, Nov 26 '17 at 16:56

score 5 · Answer 4 · answered Feb 17 '14 at 22:42

5

Just adding a summary of versions (since I saw you are trying 6.2 which is way too old)

For EF4, use Connector/NET 6.6.x (current GA is 6.6.6)
For EF5, use Connector/NET 6.7.x (current GA is 6.7.4) or Connector/NET 6.8.x (current GA is 6.8.3).
For EF6, use Connector/NET 6.8.x (current GA is 6.8.3).

answered Feb 17 '14 at 22:42

Fernando Gonzalez Sanchez

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The question is almost a year old, so I don't know that it was too old at the time, but +1 for the helpful summary. – Matt Burland Feb 18 '14 at 02:00
1

After switching my dev system, I spent two weeks to be able to run the app. Stumbled upon this answer finally. Finally app seems to work. +100. Thanks so much. – Abhijeet Nagre May 16 '23 at 12:24

score 4 · Answer 5 · answered Apr 17 '14 at 17:19

4

I've updated from EntityFramework 5.0 to 6.1 and MySQL connector 6.8.3 and only had to add the attribute to get things going again. Before adding the attribute everything would compile fine but crash at runtime.

[DbConfigurationType(typeof(MySql.Data.Entity.MySqlEFConfiguration))]
public class DemoContext : DbContext{}

answered Apr 17 '14 at 17:19

Ken

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This was the answer for me. Hopefully this gets more upvotes and we'll have a more current accepted answer. Thank you! – Simon Tower Feb 26 '15 at 04:22

score 1 · Answer 6 · answered Aug 25 '14 at 01:15

I tried every different combination of config string and setup but I finally figured it out. My solution has the source code in one project and tests in another. I was using Entity Framework 6.1.1 and had installed MySql Connector 6.8.3 and MySql for Visual Studio 1.2.3.

The problem was that I had NuGet managing the packages, but only had them included in the main project. The solution was to

Right click on the Solution (top level in the solution explorer)
Manage Nuget packages for solution
Go to Installed tab
For all of the EntityFramework related packages (MySql.Data, MySql.Data.Entities, MySql.ConnectorNET.Entity and MySql.ConnectorNET.Data), select them then select the "Manage" button.
Enable each package for all projects.

Thanks buddy you save my day. – Prashant Dec 18 '18 at 12:28 — Prashant, Dec 18 '18 at 12:28

score 1 · Answer 7 · answered Jan 23 '15 at 11:46

1

For future reference, here's the official guide on using MySQL Connector/Net with EF 6 which includes all the necessary steps (assemblies, configs, ...etc.): Chapter 10 EF 6 Support

answered Jan 23 '15 at 11:46

Moayad Mardini

7,271
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score 1 · Answer 8 · answered Aug 31 '15 at 14:24

1

Install latest version from nuget https://www.nuget.org/packages/MySql.Data.Entity/

answered Aug 31 '15 at 14:24

Emanuele

469
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score 1 · Answer 9 · answered Jan 17 '17 at 14:37

In my case, it was a missing reference. When you upgrade to EntityFramework 6, you need to add a reference to the assembly

System.Data.Entity

I think it's because MySql.Data.Entity.EF6 inherits from a bunch of stuff in this assembly, that it did not for previous version of EF.

When your app.config is good and all your references seem fine, it's a solution worth checking.

score 0 · Accepted Answer · answered Feb 28 '13 at 20:13

0

Nevermind. I noticed that I had EF 6 installed. I removed it and tried EF 5 instead (which NuGet says is the latest stable version) and it started working.

Still, a more useful error message would have been nice!

answered Feb 28 '13 at 20:13

Matt Burland

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I'm trying to do something similar and can't get the app.config right... using .Net 4.5 and EF 5.. In your `` section you still have the `` pointing to the default `LocalDbConnectionFactory`. Where do you make it point to the `MySql` db? – Joao Coelho May 07 '13 at 02:43
17

Im not really sure how uninstalling EF6 and using something else can be marked as the correct answer to this problem. – spryce Nov 01 '13 at 03:17
@spryce: It's my question and my answer. It got it working. At the time EF 5 was the stable version but somehow I'd ended up with EF 6. – Matt Burland Nov 01 '13 at 13:26

score 0 · Answer 11 · answered Jul 13 '13 at 13:03

May just MySql provider is installed in machine-config (e. g. by .net connector installer? Also the default connection factory should be something like "MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.7.4.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" i guess...

No Entity Framework provider found for 'MySql.Data.MySqlClient' ADO.NET provider

11 Answers11

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