Hi Greg,
Thank you for contacting Syncfusion support.
We have analysed the reported query “Need to update the row height of GridTemplateColumn at runtime” from our side. We would like to let you know that to update the height of the row at runtime, you need to call SfDataGrid.Refresh method whenever the row height has to be grown.
We have prepared a simple sample to showcase the working and you can download it from the below link.
If the above solution doesn’t satisfy your query, please provide us more details regarding your template which has to be adjusted based on your changes at runtime which will help us to validate the query further at our end.
Please let us know if you require further assistance.
Regards,
G.Muthu kumaran.