public void GetDocuSignHistoryByRevision(string revisionid, string versiontype, string printtype) { RetailSystemClient mrsClient = new RetailSystemClient(); mrsClient.Endpoint.Address = new System.ServiceModel.EndpointAddress(Internal.Utilities.GetMetriconRetailSystemWcfClientEndpointUrl()); mrsClient.DocuSign_GetEnvelopeHistoryByRevisionCompleted += new EventHandler <DocuSign_GetEnvelopeHistoryByRevisionCompletedEventArgs>(DocuSign_GetEnvelopeHistoryByRevisionCompleted); mrsClient.DocuSign_GetEnvelopeHistoryByRevisionAsync(revisionid, versiontype, printtype); }