提供程序构造地理对象时激发。
命名空间： System.Spatial
程序集： System.Spatial（在 System.Spatial.dll 中）
语法
声明
Event ProduceGeography As Action(Of Geography)
用法
Dim instance As IGeographyProvider
Dim handler As Action(Of Geography)
AddHandler instance.ProduceGeography, handler
event Action<Geography> ProduceGeography
event Action<Geography^>^ ProduceGeography {
void add (Action<Geography^>^ value);
void remove (Action<Geography^>^ value);
}
abstract ProduceGeography : IEvent<Action<Geography>,
EventArgs>
JScript 支持使用事件，但不支持声明新事件。