Is there a tag or property of PropertyGrid can indicate some values has changed?

Hello, Steve,

RadPropertiGrid offers several events that occur during the editing process and indicate that the value has changed.

• ValueChanging: The active editor fires this event when it is about to change its value.
• ValueChanged: Fires when the active editor changes its value. The data is not saved in the item at this point.
• PropertyValueChanging: The item fires this event when it is about to save the value.
• PropertyValueChanged: Fires when the value has been saved to the item.

You can find them listed here: https://docs.telerik.com/devtools/winforms/controls/propertygrid/editors/events 

I hope this information helps. Let me know if you have any other questions.

Regards,
Nadya
Progress Telerik