/// <summary>
/// Gets the first entity that matches the query. Null is returned if none are found.
/// </summary>
/// <typeparam name="T">The Entity Type.</typeparam>
/// <param name="service">The service.</param>
/// <param name="qb">The query.</param>
/// <returns></returns>
public static T GetFirstOrDefault <T>(this IOrganizationService service, QueryBase qb) where T : Entity
{
qb.First();
return(service.GetEntities <T>(qb).FirstOrDefault());
}
/// <summary>
/// Gets the first entity that matches the query expression. Null is returned if none are found.
/// </summary>
/// <param name="service">The service.</param>
/// <param name="query">The query.</param>
/// <returns></returns>
public static Entity GetFirstOrDefault(this IOrganizationService service, QueryBase query)
{
query.First();
return(service.RetrieveMultiple(query).Entities.FirstOrDefault());
}