Introduction - If you have any usage issues, please Google them yourself
SomethingSelected now the value of the DataGrid to bind to a selected state. Select a line of value somethingSelected into true, then all the labels have enabled = (somethingSelected) label will be activated, all the labels have enabled = (! SomethingSelected) button will be disabled. Bingding label does not necessarily must be a variable source. It can be an expression