Public Function BeginGetAreasAndLengths( _
   ByVal SpatialReference As SpatialReference, _
   ByVal InPolygonArray() As Polygon, _
   ByVal callback As AsyncCallback, _
   ByVal asyncState As Object _
) As IAsyncResult

Dim instance As GeometryServerProxy
Dim SpatialReference As SpatialReference
Dim InPolygonArray() As Polygon
Dim callback As AsyncCallback
Dim asyncState As Object
Dim value As IAsyncResult
 
value = instance.BeginGetAreasAndLengths(SpatialReference, InPolygonArray, callback, asyncState)

public IAsyncResult BeginGetAreasAndLengths( 
   SpatialReference SpatialReference,
   Polygon[] InPolygonArray,
   AsyncCallback callback,
   object asyncState
)