SQLite.CodeFirst "The provider did not return a ProviderManifest instance."

Question

我正在尝试使用 SQLite.CodeFirst (1.5.1.25, installed from NuGet package) along with the System.Data.SQLite（1.0.108，还有 NuGet）使工作成为最简单的项目。
但是，添加一个人会导致

The provider did not return a ProviderManifest instance.

异常。可悲的是，没有官方示例项目可以从中汲取灵感，因此以下是数十个 SO 答案的汇总让我遵循了最小的示例。
context:

class Person
{
   [Key]
   public int ID { get; set; }
   public string Name { get; set; }
}

class MyDBContentext : DbContext
{
    public MyDBContentext(string connectionString) 
           : base(new SQLiteConnection() { ConnectionString = connectionString }, true)
    { }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        var sqliteConnectionInitializer = new SqliteCreateDatabaseIfNotExists<MyDBContentext>(modelBuilder);
        System.Data.Entity.Database.SetInitializer(sqliteConnectionInitializer);
    }

    public DbSet<Person> People { get; set; }
}

//main
var conStr = $"Data Source=eftest.sqlite;Version=3;Password=123;";
var ctx = new MyDBContentext(conStr);
ctx.People.Add(new Person() { Name = "foo" });//<--- exception throw here
var res = ctx.SaveChanges();

和 App.config:

  <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" />
      <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>
  <entityFramework>
    <providers>
      <provider invariantName="System.Data.SQLite.EF6"
          type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6" />
      <provider invariantName="System.Data.SqlClient"
          type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
      <provider invariantName="System.Data.SQLite"
          type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6" />
    </providers>
  </entityFramework>

还有一个内部异常（翻译，因为它忽略线程文化）如果有任何相关性：

The attempt of method System.Data.SQLite.EF6.SQLiteProviderManifest.GetProviderManifestToken(System.String) to access the method System.Data.SQLite.UnsafeNativeMethods.GetSettingValue(System.String, System.String) failed.

Answer 1

重新安装所有 NuGet 包（SQLite.CodeFirst、System.Data.SQLite 和 Entity framework）并清理解决方案解决了问题。

Answer 2

对于将来遇到此问题的用户，请从您的 GAC 中删除所有 SQLite 程序集。就我而言，我必须运行从具有管理员权限的命令提示符执行以下操作：

gacutil –u System.Data.SQLite
gacutil –u System.Data.SQLite.Linq

SQLite.CodeFirst "The provider did not return a ProviderManifest instance."

SQLite.CodeFirst "The provider did not return a ProviderManifest instance."

c#

sqlite

system.data.sqlite

ef-code-first

entity-framework-6