Why Can't I Select MySQL as a Connection Provider in Entity Framework 6?

Troubleshooting Entity Framework 6 Connectivity Issues with MySQL

Introduction

When attempting to establish a connection between Entity Framework 6 and MySQL, users may encounter the inability to select MySQL as the connection provider within the ADO.NET Entity model creation wizard. This article delves into the potential causes and provides detailed solutions to resolve this issue.

Analysis

The initial investigation revealed that the MySQL plugin for Visual Studio and MySQL .Net connector were installed on the system. However, the connection issue persisted, indicating a compatibility issue with the installed versions.

Solution 1: Installing Compatible Versions (Original Answer)

1. Verify that the MySQL for Visual Studio plugin version is 1.1.3 GA.
2. Ensure that MySQL Connector/Net version is 6.8.3.
3. Copy the "MySql.Data.Entity.EF6.dll" file from the Connector/Net Assemblies folder to the "C:Program Files (x86)Microsoft Visual Studio 12.0Common7IDEPrivateAssemblies" folder.

Solution 2: Installing Missing DLLs (Edit)

1. Add the following DLLs to the bin folder of the project:

   • "MySql.Data.dll"
   • "MySql.Data.Entity.EF6.dll"
   • "MySql.Web.dll"

2. Modify the "web.config" file to update the "EntityFramework" section:

   • "codeConfigurationType" should be set to "MySql.Data.Entity.MySqlEFConfiguration, MySql.Data.Entity.EF6".
   • Add a provider with the invariant name "MySql.Data.MySqlClient" and type "MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6".

Solution 3: Bug Fix (Latest Edit)

1. Install MySQL for Windows with Visual Studio support and the latest Connector/Net.
2. Update the installed software after installation.
3. Install EntityFramework, MySql.Data, and MySql.Data.Entity using NuGet.
4. Add an Ado.Net Entity Model to utilize code-first reverse engineering.

Important Notes:

• Rebuilding the project is essential after modifying the "web.config" file.
• Compatibility issues can arise from using different versions of MySQL plugin and Connector/Net.

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