When developing an XAF application, you may be required to rename a persistent class or property due to refactoring specifics or changed business requirements. An XAF application launched in debug mode automatically creates required tables and column…
In this lesson, you will learn how to implement business classes from scratch. For this purpose, the Position business class will be implemented. This class will be used in the Contact class, implemented previously. You will also learn the basics of…
In this lesson, you will learn how to implement business classes from scratch. For this purpose, the Department and Position business classes will be implemented. These classes will be used in the Contact class, implemented previously. You will also…
From the Tutorial and other documentation sources, you learned how to create business classes for your XAF applications. If you have business classes in your application, you have database tables in the application's database. However, the reality is…
The eXpressApp Framework supplies the Business Class Library that consists of three assemblies. eXpressApp 框架提供由三个程序集组成的业务类库. Assembly 程序集 Description 描述 DevExpress.Persistent.BaseImpl.v19.2.dll Contains ready-to-use XPO persistent classes. 包含现成的 XPO…
In this lesson, you will learn how to implement business classes for your application using the Business Class Library. This library contains the most typical ready-to-use business classes. You will implement a custom Contact class by deriving from t…
In this lesson, you will learn how to create a Simple Action. For this purpose, a new View Controller will be implemented and a new Simple Action will be added to it. This Action will clear all Tracked Tasks of a specific Contact. 在本课中,您将学习如何创建简单按钮.为…
原文链接:http://www.c-sharpcorner.com/UploadFile/19b1bd/design-patterns-simplified-part3-factory/ Design Patterns Simplified - Part 3 (Simple Factory)[设计模式简述--第三部分(简单工厂)] This article explains why and how to use the Simple Factory Design Pattern in softw…
翻译的初衷以及为什么选择<Entity Framework 6 Recipes>来学习,请看本系列开篇 2-8 Table per Type Inheritance 建模 问题 你有这样一张数据库表,它包含一些额外的信息,这些信息来到一张公共的表.你想使用Table per Type Inheritance(TPT)继承映射建模. 解决方案 假设你有两张表与一张公共的表密切相关,如图2-17所示,Businiss表与eCommerce表.Retail表有1:0...1关系.最关键的是,eCo…
一,函数调用 定义一个函数只给了函数一个名称,指定了函数里包含的参数,和代码块结构. 这个函数的基本结构完成以后,你可以通过另一个函数调用执行,也可以直接从Python提示符执行. 如下实例调用了printme()函数: #!/usr/bin/python # Function definition is here def printme( str ): "打印任何传入的字符串" print str; return; # Now you can call printme functio…
Programs for handling SQL commands. The "core" of MySQL. These are the .c and .cc files in the sql directory: derror.cc --- read language-dependent message file des_key_file.cc --- load DES keys from plaintext file discover.cc --- Functions for…
敏捷软件工程(agile software development) VS传统软件工程(traditional software development) Agile principle The Agile Manifesto is based on twelve principles(敏捷开发12原则) 1. Customer satisfaction by early and continuous delivery of valuable software 2. Welcom…
Windows Sysinternals Suite 是一套由微软官方免费提供的系统工具集,其中包含了大量超级实的优秀绿色小软件,譬如 Desktops (虚拟桌面).Process Explorer (进程浏览器).Autoruns (系统启动项管理) 等等,每一款都非常实用,绝对值得你了解.收藏并学习使用它们. 这些小工具原本是为了解决工程师们平常在工作上遇到的各种问题而开发的,之后他们将这些工具集合起来称为 Sysinternals,并免费提供公众下载,其中部分还开源了,一直以来都颇受 I…
Sysinternals Suite 是微软出品的一套集成数十个绿色软件的系统工具包.Sysinternals Suite 和IT之家的魔方电脑大师设计一样,里面的各个小工具组件都可以单独拿出来运行,都是绿色化设计. 想了解这套工具包的详细信息,请查阅<微软极品Sysinternals Suite工具包使用指南>. 本次更新的四个组件是Disk2vhd v2.0更新日志如下(12月19日): Disk2vhd, a utility for performing physical-to-virt…