好的，看来我已经成功了.当您将第一个 API 控制器添加到未检查 Web API 的项目时，会弹出一个自述文件，其中包含一些附加信息:

Ok, seems I got it working. When you add your first API controller to a project that does not have the Web API checked, a readme file pops up with some additional information:

我尝试添加

WebApiConfig.Register(GlobalConfiguration.Configuration);

到 global.asax 并且它不起作用.自述文件显示以下代码

to the global.asax and it did not work. the readme show the following code

GlobalConfiguration.Configure(WebApiConfig.Register);

那行得通，虽然(在我看来)两条线做的完全一样??

that DOES work, although it seems (to me) that both lines do exactly the same thing??