You can't really email a windows form to anyone - generally most email services have filters in place to prevent executable files from being delivered, and even if you did get it through, there is no guarantee that the user can use it. THink about it, you can check your email on a PC, a Mac, an iPad, an Android tablet, a phone, a fridge - and only one of these can open a WinForm object.
Instead, look at sending it as an HTML form or page - that is pretty simple and more likely to work on most systems.
There is a method here that will help you send it:
Sending an Email in C# with or without attachments: generic routine.[
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