我最近将我的项目更新到了最新版本的Entity Framework Core(+VS2017)。当我尝试更新数据库时,出现以下错误消息。虽然错误消息很清楚,但它似乎是错误的。在我的ConfigureServices中确实有AddDbContext(请参见下面的代码)。
我错过了什么?
错误信息
> dotnet ef database update --verbose
Finding DbContext classes...
Using context 'ApplicationDbContext'.
System.InvalidOperationException: No database provider has been configured for this DbContext. A provider can be configured by overriding the DbContext.OnConfiguring method or by using AddDbContext on the application service provider. If AddDbContext is used, then also ensure that your DbContext type accepts a DbContextOptions<TContext> object in its constructor and passes it to the base constructor for DbContext.
创业
public void ConfigureServices(IServiceCollection services) {
services.AddDbContext<ApplicationDbContext>(options =>
options.UseSqlServer(this.Configuration.GetConnectionString("DefaultConnection")));
CSProj
<PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore">
<Version>1.1.0</Version>
</PackageReference>
<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore">
<Version>1.1.0</Version>
</PackageReference>
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer">
<Version>1.1.0</Version>
</PackageReference>
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer.Design">
<Version>1.1.0</Version>
<PrivateAssets>All</PrivateAssets>
</PackageReference>
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools">
<Version>1.0.0-msbuild1-final</Version>
<PrivateAssets>All</PrivateAssets>
</PackageReference>
<PackageReference Include="Microsoft.EntityFrameworkCore.Design">
<Version>1.1.0</Version>
</PackageReference>