update user interface when database data is changed

is there any way possible where a control on the form (ex: datagrid) is automatically updated once a data has been inserted on the Database?

Example:

1. Person A has a dashboard on his computer which monitors a high level inventory breakdown.
2. Person B, C, and D added a new item to the inventory database respectively.
3. Person B, C, and D's action should immediately reflect on Person A's (realtime) with no timers, intervals, or manual refresh.

is it possible to achieve this via C# WinForms? I've studied and tried things about SignalR but i don't think its that of what i want/need.

Thanks.