https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.control.controladded?view=netframework-4.8.1&redirectedfrom=MSDN
Control.ControlAdded Event (System.Windows.Forms) | Microsoft Learn
Occurs when a new control is added to the Control.ControlCollection.
event systemwindows formscontrolmicrosoftlearn
https://learn.microsoft.com/es-es/dotnet/api/system.windows.forms.control.controladded?view=netframework-4.8.1&redirectedfrom=MSDN
Control.ControlAdded Event (System.Windows.Forms) | Microsoft Learn
Occurs when a new control is added to the Control.ControlCollection.
event systemwindows formscontrolmicrosoftlearn