Posted 24 April 2022, 7:09 am ESTThe Office2016 themes do not work properly when you specify a RowBackground and/or AlternatingRowBackground with the C1DataGrid. The overridden values are not applied until a row is scrolled out of view and then back into view. You can replicate this using your sample project Themes2010.4. In Gallery.xaml.cs, add the following code after line 70:
grid.AlternatingRowBackground = Brushes.Tomato;
Then run the project. Switch to any of the Office 2016 themes (I used the Office2016Black theme), select the DataGrid tab and notice that the row color doesn't alternate until you scroll row in and out of view. The other office themes (specifically Office2013) work correctly.