I am new to .NET and SF, I have a concern about what is the proper or the SF way to call/open forms within the application.  I found the code below in the forums and I wonder if there is such a method in any of the SF classes to re-used, instead of having to create one manually?:

Also, how to handle only one instance of the form to be opened, ex: I don't want the users to open the forms more than once.

P.S.

I am using an MDI form based on SF StandardForm class.