Public Sub DistanceAsync( _
   ByVal geometry1 As Geometry, _
   ByVal geometry2 As Geometry, _
   ByVal parameters As DistanceParameters, _
   Optional ByVal userToken As Object _
) 

public void DistanceAsync( 
   Geometry geometry1,
   Geometry geometry2,
   DistanceParameters parameters,
   object userToken
)

Parameters

geometry1

The geometry from where the distance is to be measured.

geometry2

The geometry to which the distance is to be measured. The structure of geometry is same as the structure of the JSON geometry objects returned by the ArcGIS REST API. The use of simple syntax is not supported.

parameters

Parameters contains additional properties that defines how the distance task will be preformed.

userToken

A user-defined object that is passed to the method invoked when the asynchronous operation completes.

Target Platforms: Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family, Windows 7, Windows 8

Reference