'宣言 Public Property Longitude As T
'使用法 Dim instance As LonLat(Of T) Dim value As T instance.Longitude = value value = instance.Longitude
public T Longitude {get; set;}
'宣言 Public Property Longitude As T
'使用法 Dim instance As LonLat(Of T) Dim value As T instance.Longitude = value value = instance.Longitude
public T Longitude {get; set;}