Metadata contains a reference that cannot be resolved

I exported Xrm.cs file from CRM to retrieve records and display them in .Net web application. I'm able to do that from On Premise CRM instance(http://crmonpremise/CRM/XRMServices/2011/Organization.svc). But when I use the same code to retrieve from OnLine/IFD CRM, its giving an error 'Metadata contains a reference that cannot be resolved: https://MyInstance.api.crm5.dynamics.com/XRMServices/2011/Organization.svc?wsdl'. Can any one help me to fix this?