Public Sub TrimExtendAsync( _
   ByVal polylines As IList(Of Polyline), _
   ByVal trimExtendTo As Polyline, _
   ByVal extendHow As CurveExtension, _
   Optional ByVal userToken As Object _
) 

public void TrimExtendAsync( 
   IList<Polyline> polylines,
   Polyline trimExtendTo,
   CurveExtension extendHow,
   object userToken
)

Parameters

polylines

The collection of polylines to be trimmed or extended

trimExtendTo

The defining trim/extend line.

extendHow

Flags controlling the extend operation.

userToken

The user token.

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

Reference