C# responsible form on excel
I'm learning the art of developing. I may have some strangers questions for you guys. I'm developing an excel ADD-IN using C#. Excel ADD-IN, Highlight screenshot On the picture when I click on HighLight Button it shows the configured fields(blue) and tables(orange). What I know is, it's not Excel borders its a box that goes above the fields and tables. First question: any of you know what is this box if its a form or something like that? Second question: I have the range of all configured fields and table so it may help to set the exact size of the box. But I have no idea of how to get the size of an Excel range and give to a C# form, Do you know any way to do that? Third question: It's about the colors, I was trying to replicate this colors on some C# forms, but I just found solid colors on the properties, to make a color seems bright is it a property, border or something else?
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