What's Preferred Way In Visual Studio Designer To Add Attribute To Control

I need to add attributes to certain controls in a Windows Forms project. It needs to look something like this: [code] I can go in and edit the designer file to get more-or-less the desired effect, but those designer files sometimes come with the caveat that they are automatically-generated files. I'm worried that the designer might overwrite any changes that I make to the file. That said, is there a way to add attributes to controls using the designer or is there some way that I can add the attributes in a separate file?