Entity Framework 6 + SQLite

ado.net entity-framework entity-framework-6 sqlite

Question

I'm trying to use EF6 alpha and SQLite 1.0.66.0

My .config file:

<connectionStrings>
   <add connectionString="data source=:memory:;" name="TestDbContext" providerName="System.Data.SQLite" />
</connectionStrings>
<entityFramework>
   <providers>
      <provider invariantName="System.Data.SQLite" type="System.Data.SQLite.SQLiteFactory, System.Data.SQLite, Version=1.0.66.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139" />
   </providers>
</entityFramework>
<runtime>
   <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
     <dependentAssembly>
        <assemblyIdentity name="EntityFramework" publicKeyToken="b77a5c561934e089" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.0.0.0" newVersion="5.0.0.0" />
     </dependentAssembly>
   </assemblyBinding>
</runtime>
<system.data>
  <DbProviderFactories>
     <remove invariant="System.Data.SQLite"/>
       <add name="SQLite Data Provider" invariant="System.Data.SQLite"
           description=".Net Framework Data Provider for SQLite"
           type="System.Data.SQLite.SQLiteFactory, System.Data.SQLite, Version=1.0.66.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139" />
  </DbProviderFactories>
</system.data>

When I run

using (var dbContext = new TestDbContext())
{
    if (dbContext.Database.Exists())
    {
        dbContext.Database.Delete();
    }
    dbContext.Database.Create();
}

I get an error:

System.InvalidOperationException: System.InvalidOperationException: The 'Instance' member of the Entity Framework provider type 'System.Data.SQLite.SQLiteFactory, System.Data.SQLite, Version=1.0.66.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139' did not return an object that inherits from 'System.Data.Entity.Core.Common.DbProviderServices'. Entity Framework providers must extend from this class and the 'Instance' member must return the Singleton instance of the provider..

What am I doing wrong?

Popular Answer

if you used EF 6.1.3 + System.Data.SQLite v1.0.96.0, just adjust(add) the following declarations in the web.config. (you can find the difference with some text-compare tool, i have numbered them).

    <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" />
        <provider invariantName="System.Data.SQLite.EF6" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6" /> 

        <!-- 1. Solves SQLite error of "Unable to find the requested .Net Framework Data Provider."-->
        <provider invariantName="System.Data.SQLite" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6" />

    </providers>
</entityFramework>
<system.data>
    <DbProviderFactories>
        <remove invariant="System.Data.SQLite.EF6" />
        <add name="SQLite Data Provider (Entity Framework 6)" invariant="System.Data.SQLite.EF6" description=".NET Framework Data Provider for SQLite (Entity Framework 6)" type="System.Data.SQLite.EF6.SQLiteProviderFactory, System.Data.SQLite.EF6" /> 

        <!-- 2. Solves SQLite error of "Unable to find the requested .Net Framework Data Provider."-->
        <remove invariant="System.Data.SQLite"/>
        <add name="SQLite Data Provider" invariant="System.Data.SQLite"
            description=".Net Framework Data Provider for SQLite" type="System.Data.SQLite.SQLiteFactory, System.Data.SQLite" />

    </DbProviderFactories>
</system.data>

It works for me.




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Is this KB legal? Yes, learn why