C#: In what assembly is SHDocVw.WebBrowser_V1 defined?

Question

It\'s used on several websites which all seem to assume the reader knows what to do to have this type available, but I have no clue.

Example site, see the first comment:

Answer 1

Add a COM reference to c:\windows\system\shdocvw.dll

This will create a .NET reference Interop.shdocvw.dll (or something similar) that includes the appropriate types.