问题
The icon is in the solution explorer next to one of the generated classes
回答1:
That icon indicates that it is a generated file. See the Visual Studio Image Library for details
回答2:
Those are files (especially, resource file .resx) that are automatically generated by the designer, for instance , when you design a form with two ore more language base (localizable : true ), VS automatically generates resources files while you go through ... https://msdn.microsoft.com/en-us/library/y99d1cd3(v=vs.100).aspx
来源：https://stackoverflow.com/questions/28096168/what-does-the-icon-with-the-white-sheet-of-paper-with-the-blue-arrow-pointing-to