<DescriptionAttribute()>
<CategoryAttribute("Behavior")>
Public Event LoadPreviewRow As RowEventHandler

Dim instance As WebGrid
Dim handler As RowEventHandler
 
AddHandler instance.LoadPreviewRow, handler

[DescriptionAttribute()]
[CategoryAttribute("Behavior")]
public event RowEventHandler LoadPreviewRow

public event LoadPreviewRow: RowEventHandler; 

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

[DescriptionAttribute()]
[CategoryAttribute("Behavior")]
public: __event RowEventHandler* LoadPreviewRow

[DescriptionAttribute()]
[CategoryAttribute("Behavior")]
public:
event RowEventHandler^ LoadPreviewRow