Hello Teddy,

With Telerik MAUI 11.0.0 release we have introduced a RowBackgroundStyleSelector property. You can use the property as a workaround of this issue. An example with the property can be found here: https://docs.telerik.com/devtools/maui/controls/datagrid/theming-and-styles/style-selectors#example-with-row-background-style-selectors 

Note: With 11.0.0 official release, there are breaking changes. The changes are described here: https://docs.telerik.com/devtools/maui/upgrade/breaking-changes/11-0-0 For DataGrid, the change is as follow:

• The AlternateRowBackgroundStyle type is changed from DataGridAlternateRowBackgroundAppearance to DataGridRowBackgroundAppearance.
• The DataGridAlternateRowBackgroundAppearance class is obsoleted. Use the DataGridRowBackgroundAppearance instead.

Regards,
Didi
Progress Telerik