AppDomain.CurrentDomain.BaseDirectory 是我去这样做的方式。

不过：

Application.StartupPath 得到您的可执行文件的目录

AppDomain.BaseDirectory 获取用于解决组件目录

由于它们可以是不同的，也许你想使用Application.StartupPath，除非你关心大会决议。

I need to get all dlls in my application root directory. What is the best way to do that?

string root = Application.StartupPath;

Or,

string root = new FileInfo(Assembly.GetExecutingAssembly().Location).FullName;

And after that,

Directory.GetFiles(root, "*.dll");

Which way is better? Are there better ways?

AppDomain.CurrentDomain.BaseDirectory is my go to way of doing so.

However:

Application.StartupPath gets the directory of your executable

AppDomain.BaseDirectory gets the directory used to resolve assemblies

Since they can be different, perhaps you want to use Application.StartupPath, unless you care about assembly resolution.