EntityFramework 学习一 Colored Entity in Entity Framework 5.0

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EntityFramework 学习一 Colored Entity in Entity Framework 5.0

You can change the color of an entity in the designer so that it would be easy to see related groups of entities in the designer from Visual Studio 2012 onwards. To change the color of an entity, select entity in the designer → go to property window…

EntityFramework 学习一 Change Tracking in Entity Framework

EntityFramework自动跟踪上下文中已经加载的实体,DbChangeTracker类给你关于当前实体的所有跟踪信息注意,每个实体都要有EntityKey(主键)的属性,EntityFramework将不添加没有主键的概念模型 static void Main(string[] args) { using (var ctx = new SchoolDBEntities()) { Console.WriteLine("Find Student"); ); Console.Wri…

EntityFramework 学习一 Multiple Diagrams in Entity Framework 5.0

Visual Studio 2012 provides a facility to split the design time visual representation of the Entity Data Model. This means that you can have multiple diagrams for one Entity Data Model. You can create a new diagram in multiple ways: Add a new diagram…

EntityFramework 学习一 Table-Valued Function in Entity Framework 5.0

USE [SchoolDB] GO /****** Object: UserDefinedFunction [dbo].[GetCourseListByStudentID] */ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE FUNCTION [dbo].[GetCourseListByStudentID] ( -- Add the parameters for the function here @studentID int )…

EntityFramework 学习一 Migration from Entity Framework 4.1/4.3 to Entity Framework 5.0/6.0

To migrate your existing Entity Framework 4.x project to Entity Framework 5.0 using VS2012, first target .NET Framework 4.5: Second, remove the existing Entity Framework 4.1/4.3 reference and install Entity Framework 5.0 from NuGet: Search for Entity…

.NET 5学习笔记（10）——Entity Framework Core之切换SQLServer和SQLite

上一篇我们梳理了CodeFist的一般流程,本篇我们讨论如何在一套代码中,支持SQL Server和SQLite的切换.同时从本篇开始,我们从.NET Core 3.1 迁移到.NET 5.相信.NET 到了5这个版本,所有人都不会再怀疑某软跨平台的决心.而且SQL Server也从2017版本开始支持Linux.但是我相信在Linux上使用Visual Stuido Code时,搭配SQLite更能体现某软现任CEO崽卖爷田不心疼的精神.SQLite是非常常见的数据库,最大的特点就是零部署,以…