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The below configuration works fine when I specify the connectionString name as a parameter to the base constructor. Because I want to be able to change the default provider later on without recompiling, I want to set it in my app.config instead, but I have no idea what to provide as type for defaultConnectionFactory .

  <connectionStrings>
    <add name="MySQL" providerName="MySql.Data.MySqlClient" connectionString="SERVER=localhost;DATABASE=abc;UID=root;PASSWORD=;" />
  </connectionStrings>
  <entityFramework>
    <defaultConnectionFactory type="MySql.Data.Entity.MySqlConnectionFactory, EntityFramework"></defaultConnectionFactory>
    <providers>
      <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>
Exception:
  
Failed to set Database.DefaultConnectionFactory to an instance of
  the 'MySql.Data.Entity.MySqlConnectionFactory, EntityFramework' type
  as specified in the application configuration. See inner exception for
  details.
Inner exception (translated, VS is set to English but some messages are still in my language):
  
Could not load type "MySql.Data.Entity.MySqlConnectionFactory" in
  assembly "EntityFramework"
The documentation states that the assembly name follows after the colon, thus I also tried MySql.Data.Entity.MySqlConnectionFactory, MySql.Data.Entity.EF6, giving me this exception:
  
Format of the initialization string does not conform to specification
  starting at index 0.
I'm using EF6, MySql.Data & MySql.Data.Entity.EF6 6.8.3.0.
The name property of the connectionString must be the same as your context. This works fine:
  <connectionStrings>
    <add name="NAMEOFYOURCONTEXT" providerName="MySql.Data.MySqlClient" connectionString="Server=localhost;Database=abc;Uid=root;Pwd='';" />
  </connectionStrings>
  <entityFramework>
    <defaultConnectionFactory type="MySql.Data.Entity.MySqlConnectionFactory, MySql.Data.Entity.EF6"></defaultConnectionFactory>
    <providers>
      <provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6"></provider>
    </providers>
  </entityFramework>
                How we are suppose to change at runtime from mssql to mysql or mysql to mssql? link. Please let me know.
– Narendra Singh Rathore
                May 22, 2017 at 2:32
        
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