Occurs when the asynchronous image-load operation is completed, been canceled, or raised an exception.
The PictureBox.LoadCompleted occurs only when the image is loaded asynchronously by using one of the erload:System.Windows.Forms.PictureBox.LoadAsync methods, and PictureBox.WaitOnLoad is false. If the image-load is canceled by calling the PictureBox.CancelAsync method the System.ComponentModel.AsyncCompletedEventArgs.Cancelled property of the System.ComponentModel.AsyncCompletedEventArgs will be set to true. If an exception or error occurs during the load process, it will be caught and the System.ComponentModel.AsyncCompletedEventArgs.Error property of the System.ComponentModel.AsyncCompletedEventArgs will contain the exception information.
For more information about handling events, see Consuming Events.