Public Function BeginOffset( _
   ByVal SpatialReference As SpatialReference, _
   ByVal InGeometryArray() As Geometry, _
   ByVal OffsetDistance As Double, _
   ByVal OffsetUnit As LinearUnit, _
   ByVal OffsetHow As esriGeometryOffsetEnum, _
   ByVal BevelRatio As Double, _
   ByVal SimplifyResult As Boolean, _
   ByVal callback As AsyncCallback, _
   ByVal asyncState As Object _
) As IAsyncResult

Dim instance As GeometryServerProxy
Dim SpatialReference As SpatialReference
Dim InGeometryArray() As Geometry
Dim OffsetDistance As Double
Dim OffsetUnit As LinearUnit
Dim OffsetHow As esriGeometryOffsetEnum
Dim BevelRatio As Double
Dim SimplifyResult As Boolean
Dim callback As AsyncCallback
Dim asyncState As Object
Dim value As IAsyncResult
 
value = instance.BeginOffset(SpatialReference, InGeometryArray, OffsetDistance, OffsetUnit, OffsetHow, BevelRatio, SimplifyResult, callback, asyncState)

public IAsyncResult BeginOffset( 
   SpatialReference SpatialReference,
   Geometry[] InGeometryArray,
   double OffsetDistance,
   LinearUnit OffsetUnit,
   esriGeometryOffsetEnum OffsetHow,
   double BevelRatio,
   bool SimplifyResult,
   AsyncCallback callback,
   object asyncState
)