This topic provides step-by-step instructions on how to use the XPO Data Model Designer in XAF applications. We will create a simple business model consisting of two objects - Employee and Task. These objects will be linked with a one-to-many relatio…

How to: Create a Business Model in the XPO Data Model Designer This topic provides step-by-step instructions on how to use the XPO Data Model Designer in XAF applications. We will create a simple business model consisting of two objects - Employee an…

http://www.entityframeworktutorial.net/EntityFramework5/create-dbcontext-in-entity-framework5.aspx 官网的教程https://msdn.microsoft.com/en-us/data/jj206878 Here, we are going to create an Entity Data Model (EDM) for SchoolDB database and understand the ba…

If you have a non-XAF application, and want to develop an XAF application that utilizes the same database, you can generate business classes for an existing database to achieve this task. However, if your existing application is based on the Entity F…

After you have introduced a data model, you may need to have the application populate the database with a predefined set of objects. In this topic, you will learn how to add data to the database in code when the application runs. For this purpose, th…

In this lesson, you will learn how to create reports in the integrated reporting system. This system is based on the DevExpress Reporting library for WinForms and ASP.NET. This lesson will guide you through creating a report that shows a list of Cont…

现在我要来为上面一节末尾给出的数据库(SchoolDB)创建实体数据模型: SchoolDB数据库的脚本我已经写好了,如下: USE master GO IF EXISTS(SELECT * FROM sys.sysdatabases WHERE name='SchoolDB') DROP DATABASE SchoolDB; GO CREATE DATABASE SchoolDB GO USE SchoolDB; GO --创建Standard表 IF EXISTS (SELECT * FRO…

Create Entity Data Model: Here, we are going to create an Entity Data Model (EDM) for SchoolDB database and understand the basic building blocks. Entity Data Model is a model that describes entities and the relationships between them. Let's create fi…

1.用vs2012创建控制台程序 2.设置项目的.net 版本 3.创建Ado.net实体数据模型 3.打开实体数据模型向导Entity Framework有四种模型选择 来自数据库的EF设计器(Database First).空EF设计器(Model First).空CodeFirst模型(Code First).来自数据库的CodeFirst模型(Code First) 4. 选择已存在的数据库连接 5.下一步显示数据库中所有的表.视图和存储过程 备注: Pluralize or singu…

This topic describes how to define the business model and the business logic for WinForms and ASP.NET applications. The applications' business model contains two logical parts that are implemented via different ORM tools: 本主题描述如何定义WinForms和ASP.net的业务…