在Sqlite中使用实体框架

Question

I'm trying to use Sqlite with my C# Console App but when trying to add the Entity-Framwork data model I get the following message:

Your project references the latest version of Entity Framework; however, an Entity Framework database provider compatible with this version could not be found for your data connection. If you have already installed a compatible provider, ensure you have rebuilt your project before performing this action. Otherwise, exit the wizard, install a compatible provider, and rebuild your project before performing this action.

Steps to reproduce:

• Add a new .NET 4 Console Application
• Install the System.DataBase.SQLite (x86/x64) Nuget package (which automatically installs the Entity-Framwork package as a dependency)
• Add an ADO.NET Entity Data Model with the Add new item dialog

after following the above steps the following app.config was created:

<?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>
  <system.data>
    <!--
        NOTE: The extra "remove" element below is to prevent the design-time
              support components within EF6 from selecting the legacy ADO.NET
              provider for SQLite (i.e. the one without any EF6 support).  It
              appears to only consider the first ADO.NET provider in the list
              within the resulting "app.config" or "web.config" file.
    -->
    <DbProviderFactories>
      <add name="SQLite Data Provider" invariant="System.Data.SQLite" description=".NET Framework Data Provider for SQLite" type="System.Data.SQLite.SQLiteFactory, System.Data.SQLite" />
      <remove invariant="System.Data.SQLite" />
      <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" />
    </DbProviderFactories>
  </system.data>
  <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="System.Data.SQLite.EF6" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6" />
    </providers>
  </entityFramework>
</configuration>

and the following packages.config :

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="EntityFramework" version="6.1.1" targetFramework="net40" />
  <package id="System.Data.SQLite" version="1.0.94.1" targetFramework="net40" />
  <package id="System.Data.SQLite.Core" version="1.0.94.0" targetFramework="net40" />
  <package id="System.Data.SQLite.EF6" version="1.0.94.0" targetFramework="net40" />
  <package id="System.Data.SQLite.Linq" version="1.0.94.1" targetFramework="net40" />
</packages>

Answer 1

You only need these packages:

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="EntityFramework" version="6.1.1" targetFramework="net40" />
  <package id="System.Data.SQLite.Core" version="1.0.94.0" targetFramework="net40" />
  <package id="System.Data.SQLite.EF6" version="1.0.94.0" targetFramework="net40" />
</packages>

And then set you build configuration to x86!

Answer 2

<entityFramework>
  <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
  <providers>
    <provider invariantName="System.Data.SQLite" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6, Version=1.0.94.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139" />
    <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" />-->
  </providers>
</entityFramework>
<connectionStrings>
  <add name="SettingContext" connectionString="Data Source=setting.db" providerName="System.Data.SQLite" />

<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" />
    <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" />

</DbProviderFactories>
</system.data>