Contrary to what I would think, multiple selected sheets are not a Worksheets object type.
After multi-selecting 2 or more sheets. The way I get the selection is as so:
var selection = ExcelApp.Selection; //Returns object type
I've tried getting the "Name" property to try and give me a hint by using late binding with:
string name = selection.GetType().InvokeMember("Name", System.Reflection.BindingFlags.GetProperty, null, selection, null).ToString();
But this throws errors for the given selection type.
Any ideas?