摘要：1.国家-省-县联动实现2.XPO Data ModelDesigner GUI3.代码：/Files/Tonyyang/XAF Samples/CountryProvinceCounty.rar 阅读全文

摘要：方式1.http://www.devexpress.com/Support/Center/p/K18123.aspx 方式2.http://www.expandframework.com/forum/11-news/2495-module-decoupling-from-core-functionality.html#2508 阅读全文

摘要：Try an XAF application that uses the Entity Framework as an ORM layer http://www.devexpress.com/Support/Center/Question/Details/KA18571 阅读全文

摘要：问题：由于用户可以自行更改客户端电脑时间，造成取DateTime.Now日期时间不准确。解决方案：取服务器端的日期时间。实现方法： Sessionsession=newSession();CriteriaOperatorfuncNow=newFunctionOperator(FunctionOperatorType.Now);DateTimeserverTime=(DateTime)session.Evaluate(typeof(XPObjectType),funcNow,null);Console.WriteLine("Servertime:{0}",serverTime 阅读全文