c# - 错误 CS1061 'DbContextOptionsBuilder' 不包含定义 > 'UseSqlServer' 并且没有扩展方法 'UseSqlServer'

Question

不确定我应该引用哪个程序集来消除这个阻塞错误。

public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    services.AddDbContext<QAContext>(options => options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
    // Add framework services.
    services.AddMvc();
}

Error CS1061 'DbContextOptionsBuilder' does not contain a definition for 'UseSqlServer' and no extension method 'UseSqlServer' accepting a first argument of type 'DbContextOptionsBuilder' could be found (are you missing a using directive or an assembly reference?)

Answer 1

如果您正在使用 EntityFrameworkCore，您必须:

添加到引用:

Microsoft.EntityFrameworkCore.SqlServer

添加到源文件:

using Microsoft.EntityFrameworkCore;