How can I use SHDocVw in C# form?
<p>I'm trying to write a program that checks if the address in a web browser isn't a 404
I searched in google how to do it and I found a tutorial.
In the tutorial there's a namespace called <code>SHDocVw</code>.
Visual C# tells me <code>the namespace 'SHDocVw' could not be found</code>.
What I need to do to fix this?</p>
