Override ArcGISTiledMapServiceLayer proxy authentication

Discussion created by michaelcheng on Aug 29, 2011
Latest reply on Feb 25, 2013 by jameshatton
We have a proxy, which when using ArgGIS Silverlight control, can talk to the server just fine.  However, when using the WPF control, it gets Authentication failed error.  Is there anyway to "plug" into the ArcGISTiledMapServiceLayer to manually set required values to pass our proxy server?