Get Entity type Code Mscrm 2011 plugin code

private int GetEntityTypeCode(IOrganizationService service)

        {

            RetrieveEntityRequest request = new RetrieveEntityRequest();

            request.LogicalName = "Entity Name ";

            RetrieveEntityResponse response = (RetrieveEntityResponse)service.Execute(request);

            int objectTypecode = response.EntityMetadata.ObjectTypeCode.Value;

            return objectTypecode;

        }