LoadingExtension

This application is a sample of a loading control used in Windows Forms project. When its called from a control (its an extension method), it shows up asynchronously until heavy load operation is done. You don't need to create a panel and picturebox while in design mode. This extension will show up and docks filled on called control. It has a callback method to cancel async operation. When the calling control is resized like maximize form, it will replace itself to be the center of the form again.