Public Function New( _
   Optional ByVal arcGISPortal As ArcGISPortal, _
   Optional ByVal bingKey As String, _
   Optional ByVal proxyUrl As String _
)

public WebMapViewModel( 
   ArcGISPortal arcGISPortal,
   string bingKey,
   string proxyUrl
)

Parameters

arcGISPortal

The portal (arcgis.com by default).

bingKey

The bing key.

proxyUrl

URL to proxy the requests through when necessary.

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

Reference