discovery service code

 public void Run(ServerConnection.Configuration serverConfig, bool promptforDelete)
        {
            try
            {
                // Connect to the Discovery service. 
                // The using statement assures that the service proxy will be properly disposed.
                using (_serviceProxy = new DiscoveryServiceProxy(serverConfig.DiscoveryUri,
                                                                    serverConfig.HomeRealmUri,
                                                                    serverConfig.Credentials,
                                                                    serverConfig.DeviceCredentials))
                {
                    // You can choose to use the interface instead of the proxy.
                    IDiscoveryService service = _serviceProxy;

                    #region RetrieveOrganizations Message

                    // Retrieve details about all organizations discoverable via the
                    // Discovery service.
                    RetrieveOrganizationsRequest orgsRequest =
                        new RetrieveOrganizationsRequest()
                        {
                            AccessType = EndpointAccessType.Default,
                            Release = OrganizationRelease.Current
                        };
                    RetrieveOrganizationsResponse organizations =
                        (RetrieveOrganizationsResponse)service.Execute(orgsRequest);

                    // Print each organization's friendly name, unique name and URLs
                    // for each of its endpoints.
                    Console.WriteLine();
                    Console.WriteLine("Retrieving details of each organization:");
                    foreach (OrganizationDetail organization in organizations.Details)
                    {
                        Console.WriteLine("Organization Name: {0}", organization.FriendlyName);
                        Console.WriteLine("Unique Name: {0}", organization.UniqueName);
                        Console.WriteLine("Endpoints:");
                        foreach (var endpoint in organization.Endpoints)
                        {
                            Console.WriteLine("  Name: {0}", endpoint.Key);
                            Console.WriteLine("  URL: {0}", endpoint.Value);
                        }
                    }
                    Console.WriteLine("End of listing");
                    Console.WriteLine();

                    #endregion RetrieveOrganizations Message

                    #region RetrieveOrganization Message

                    // Retrieve details about a single organization discoverable via the Discovery service.
                    //
                    RetrieveOrganizationRequest orgRequest =
                        new RetrieveOrganizationRequest()
                        {
                            UniqueName = organizations.Details[organizations.Details.Count -1].UniqueName,
                            AccessType = EndpointAccessType.Default,
                            Release = OrganizationRelease.Current
                        };
                    RetrieveOrganizationResponse org =
                        (RetrieveOrganizationResponse)service.Execute(orgRequest);

                    // Print the organization's friendly name, unique name and URLs
                    // for each of its endpoints.
                    Console.WriteLine();
                    Console.WriteLine("Retrieving details of specific organization:");
                    Console.WriteLine("Organization Name: {0}", org.Detail.FriendlyName);
                    Console.WriteLine("Unique Name: {0}", org.Detail.UniqueName);
                    Console.WriteLine("Endpoints:");
                    foreach (KeyValuePair<EndpointType, string> endpoint in org.Detail.Endpoints)
                    {
                        Console.WriteLine("  Name: {0}", endpoint.Key);
                        Console.WriteLine("  URL: {0}", endpoint.Value);
                    }
                    Console.WriteLine("End of listing");
                    Console.WriteLine();

                    #endregion RetrieveOrganization Message

                }
            }

            // Catch any service fault exceptions that Microsoft Dynamics CRM throws.
            catch (FaultException<Microsoft.Xrm.Sdk.DiscoveryServiceFault>)
            {
                // You can handle an exception here or pass it back to the calling method.
                throw;
            }
        }