C# EF Code first查询返回0

我尝试从数据库中的表中获取所有行，但列表返回空。 数据库中的行的屏幕截图：

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这是我的app.config

<?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>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
  </startup>
  <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" />
    </providers>
  </entityFramework>
</configuration>

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如果您使用的是SQL CE，则很可能是在bin\debug文件夹中创建了数据库文件，但您指向了其他地方

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如果您使用的是

DropCreateDatabaseAlways

视图在哪里，则尤其如此。。？？和你的连接字符串，因为你提供的代码很好。显示你的web配置数据库连接。检查连接字符串并找出你有多少个数据库副本。这是我的app.config

public class FilmsContext : DbContext
    {

        public FilmsContext() : base("FilmsContext")
        {
        }

        public DbSet<Films> Films { get; set; }
    }

public class Films
    {
        public int Id { get; set; }
        public string name { get; set; }
        public string beschrijving { get; set; }
        public string afbeelding { get; set; }
        public string auteur { get; set; }
        public int sterren { get; set; }
        public string websitelink { get; set; }
        public DateTime datum { get; set; }
    }

<?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>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
  </startup>
  <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" />
    </providers>
  </entityFramework>
</configuration>