How to import a dll file to vvvv

Hi~,I just started learning vvvv.I try to use C# to write a node like they did in the tutorial.When i drag my .dll file to a new panel, a “path” always appears instead of the node I expected. There must be something simple but easy to overlook, help plz

The simplest way to write a plugin using C# in vvvv beta, is using: Dynamic Plugins.

But please also consider using vvvv gamma instead. Here writing nodes using C# is much simpler and you can take it much further, see: Extending vvvv | vvvv gamma documentation