I have an application which I'm using to practice with, which will re-direct traffic from a certain website to a different website.

For example
1.

User opens a web-browser and types in a link like "www.youtube.com".

2.

The user presses 'enter' and they're forwarded to www.youtube.com.
Now, what if I don't want to go to this website, and I want to redirect the search to a different domain? How would I do this? Would it look something like this?

Code:
Dim website As "www.youtube.com"
If website.IsSearched = True Then
MesssageBox.Show("This site is whitelisted.")
I know this code will NOT work, but, it's a brief example of what I'm trying to achieve.

Any help or references to projects would be great.