How to use url to open a form?

This is probably a ridiculous question for most. I am very new to ASP and C#. I have created a simple form that gets filled out and on submit gets recorded as a record in a sql-server database. That part works perfectly. What i'm trying to figure out is how send someone a url in an email that they can click on and it will open the form. I can't seem to find a simple answer in google land. If someone has sample code or can point me to a web page with info it would be greatly appreciated.
Ultimately when the user clicks submit on the form it would send an email to me containing the url, so I can open the form. For now just figuring out how to compose the url and get the form to load would be awesome.