Public Event DownloadProgress As EventHandler(Of DownloadProgressChangedEventArgs)

Dim instance As Downloader
Dim handler As EventHandler(Of DownloadProgressChangedEventArgs)
 
AddHandler instance.DownloadProgress, handler

public event EventHandler<DownloadProgressChangedEventArgs> DownloadProgress

public event DownloadProgress: EventHandler; 

In JScript, you can handle the events defined by another class, but you cannot define your own.

public: __event EventHandler<DownloadProgressChangedEventArgs*>* DownloadProgress

public:
event EventHandler<DownloadProgressChangedEventArgs^>^ DownloadProgress