Object of type “X” cannot be converted to object of type “X”

Question

(Can\'t believe this hasn\'t already been asked, but I can\'t find a dup)

In Visual Studio with lots of projects, when I first open the solution, I sometime

Answer 1

I found the following to be useful, as described here: Object of type 'Data.TimeLineChartedDay[]' cannot be converted to type 'Data.TimeLineChartedDay[]'?

[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]