I have an application that among other things has an Edit Button and when the user clicks on that button I want a new window to open with various textboxes for editing purposes.
I can create a new window with code like
Form editform = new Form();
But I want to design that window in the Designer too.
In Visual Studio, right-click on your project and select Add->Windows Form. That will give you a new form to work with. Lay it out how you want. Then you can launch the window from your main window with code similar to the following: