/// <summary> /// Loads the metadata and converts it into an EdmModel that is then used by a dataservice context /// This allows the user to use the DataServiceContext directly without having to manually pass an IEdmModel in the Format /// </summary> /// <returns>A service model to be used in format tracking</returns> internal IEdmModel LoadServiceModelFromNetwork() { HttpWebRequestMessage httpRequest; BuildingRequestEventArgs requestEventArgs = null; // test hook for injecting a network request to use instead of the default if (InjectMetadataHttpNetworkRequest != null) { httpRequest = InjectMetadataHttpNetworkRequest(); } else { requestEventArgs = new BuildingRequestEventArgs( "GET", context.GetMetadataUri(), null, null, context.HttpStack); // fire the right events if they exist to allow user to modify the request if (context.HasBuildingRequestEventHandlers) { requestEventArgs = context.CreateRequestArgsAndFireBuildingRequest( requestEventArgs.Method, requestEventArgs.RequestUri, requestEventArgs.HeaderCollection, requestEventArgs.ClientHttpStack, requestEventArgs.Descriptor); } DataServiceClientRequestMessageArgs args = new DataServiceClientRequestMessageArgs( requestEventArgs.Method, requestEventArgs.RequestUri, context.UseDefaultCredentials, context.UsePostTunneling, requestEventArgs.Headers); httpRequest = new HttpWebRequestMessage(args); } Descriptor descriptor = requestEventArgs != null ? requestEventArgs.Descriptor : null; // fire the right events if they exist if (context.HasSendingRequest2EventHandlers) { SendingRequest2EventArgs eventArgs = new SendingRequest2EventArgs( httpRequest, descriptor, false); context.FireSendingRequest2(eventArgs); } Task <IODataResponseMessage> asyncResponse = Task <IODataResponseMessage> .Factory.FromAsync(httpRequest.BeginGetResponse, httpRequest.EndGetResponse, httpRequest); IODataResponseMessage response = asyncResponse.GetAwaiter().GetResult(); ReceivingResponseEventArgs responseEvent = new ReceivingResponseEventArgs(response, descriptor); context.FireReceivingResponseEvent(responseEvent); using (StreamReader streamReader = new StreamReader(response.GetStream())) using (XmlReader xmlReader = XmlReader.Create(streamReader)) { return(CsdlReader.Parse(xmlReader)); } }