Create a Node and interfaces and add pollers with .NET

I'm just getting started with testing out the SDK writing a program to compare data from our dokumentation DB to make sure that every Node and Interfaces with a connectionID exists in Orion and is polled.

So far getting info from Orion is OK, the question is now how do I add a Node and interfaces using c# and .NET.

swiclient.Create() takes string entityType and a dataset as args. This the right one to use? And if so how? Im lost at the dataset parameter :)

swisclient.Invoke() Can this be used? Can't find a "create" verb in the documentation

Any tips would be appreciated on how to solve this. 

-TrondF