Problem

I keep forgetting that it needs the System.linq namespace to work. And I keep forgetting that it is not set by default on my projects. I try not to overuse linq but sometimes it is easy.

So what happened?

I was trying this:

Dim nics As NetworkInterface() = NetworkInterface.GetAllNetworkInterfaces()
Dim result = From e In nics```


## The solution

And it came up with this error and a squiggly line under nics.

> Expression of type ‘1-dimensional array of System.Net.NetworkInformation.NetworkInterface’ is not queryable. Make sure you are not missing an assembly reference and/or namespace import for the LINQ provider.

Hmm, not very helpful. What it is trying to say is that I have to add
  
Imports System.Linq to the file and then it works. Why can’t it just say that instead of that cryptic message? I will be so bold to suggest a rewrite of that error message.

> Expression of type ‘1-dimensional array of System.Net.NetworkInformation.NetworkInterface’ is not queryable. Make sure you are not missing an assembly reference and/or namespace import for the linq provider. This means add a reference to System.Core and an Imports System.Linq, have fun.

Or, of course, they could just do it for me, what good is an IDE if it can’t even solve the obvious mistakes?