Using MVC Razor, how do I toggle client side validation?

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C#

.NET

MVC

I have a very simple web form where a user either provides registration information, or chooses to make a purchase anonymously. So obviously, I need to run validators for one input button and not when the other is clicked.

I suspect that I could do it with two begin and end form sections, but I don't really like that for the way I want the page to lay out. That also just feels like a bad way to do it to me.

I am a complete newb to MVC and razor, but am liking everything I am seeing so far. I just don't know how to do some of the basic things yet. Any help would be greatly appreciated.