它通常是在项目的根。如果它不存在，你可能没有之一。您可以通过右键点击你的项目中添加，并添加新的项目。

It's usually in the root of your project. If its not there you might not have one. You can add it by right clicking on your project and add new item.

这就是所谓的App.Config中在这一点上。一旦你编译然后将其重命名为AppName.exe.Config，并存放于构建输出。

It's called App.Config at this point. Once you compile it is then renamed to AppName.exe.Config, and placed with your build output.