I have an ObservableCollection that is bound to a DataGrid where I want the User to be able to add data into the grid, but ONLY while the sum of all entries added is less than 100%.I have an ObservableCollection that is bound to
I have an ObservableCollection that is bound to a DataGrid where I want the User to be able to add data into the grid, but ONLY while the sum of all entries added is less than 100%.I have an ObservableCollection that is bound to