validaton

Why is .CausesValidation set to True by Default for Buttons?

When creating an instance of a button within a .NET WinForms application, the .CausesValidation property is set to True. Why would all buttons be assumed to raise validation events? Doesn't this mean that, by default, all controls on a form with _Validating events will have that event called whenever the button simply gains focus? I...

Is there any baked in validation classes in C#?

I want to do simple things anyone in my web app like Checker.Email(string) which would return true or false after doing some regex or something. But I don't want to make this whole thing myself if one already exists... ...