如何在控制器中获取数据库上下文

本文介绍了如何在控制器中获取数据库上下文的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我整天都在努力弄清楚如何在默认MVC 6项目的ManageController.cs中获得ApplicationDbContext.

I am trying all day to figure out to get the ApplicationDbContext in the ManageController.cs of a default MVC 6 project.

我上网搜索了很多东西，但似乎没有人遇到与我同样的问题.这可能很简单，但我无法弄清楚. 有人有主意吗?

I went online and Googled a lot but no one seems to have the same problem as I have with it. It is probably simple but I can't figure it out. Anyone has an idea?

这是我尝试过的:

IServiceProvider service = new IServiceProvider(); var _context = service.GetService<ApplicationDbContext>();

推荐答案

使用构造函数注入:

public class ManageController { private readonly ApplicationDbContext _context; public ManageController(ApplicationDbContext context) { _context = context; } }

然后，您可以在控制器方法中使用_context对象.文档的依赖注入部分中有更多信息.

Then you can use the _context object in your controller methods. There's more info in the Dependency Injection section of the docs.