Validating datagrid values
It does fine at checking for nulls, data types, max, min, and values that match an explicitly entered list.
For this we had a static property in our view model named Errors.
I've got quite a few that must be 0,1, or 9 (no, yes and unknown), three that can be 0,1,2..10 or 99.
It's those where I'd like to use the external table.
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However the data grid complicates things, and I find myself going back and forth between doing data validation in the View Model or in the View itself.