Hi Michael,
Thanks for your feedbacks. For the DataTemplates values to update immediately, you need to set UpdateMode=PropertyChanged in the Grid level.
Please check the below sample,
BoundTemplate-752333618.zipWe do have a DataBound template sample in our install,
\Documents\syncfusion\essentialstudio\7.3.0.20\WPF\Grid.WPF\Samples\3.5\WindowsSamples\Grid Data Control - Advanced\Data Bound Template Demo\CS
But this sample is in read-only mode, because we use anonymous types in the sample. You could just remove that and try playing around with that sample.
Let me know if you need any more details.
Thanks,
Fahad
Grid.WPF TeamSyncfusion Inc.,