The Dashboard is what you see when you log into Umbraco:
It is very easy to add to this. Create a UserControl.
Make sure the UserControl does not have a form in it with runat="server"
Next open dashboard.config in the config directory and:
- Add your control to the XML in the section with the alias StartupDashboardSection
- And delete the other dashboard controls in this section. As of version 4.6, adding a control here conflicted with one of these other controls so it had to be deleted. This help was written for version 4.7 so maybe that bug was fixed in versions 4.8 and later.
And you should see your control when you refresh: