Entity Framework技术系列之7：LINQ to Entities.pdf下载

weixin_39821228 2019-09-16 10:00:26

Entity Framework技术系列之7：LINQ to Entities.pdf
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Entity Framework技术系列之7：LINQ to Entities.pdf

linq2db.EntityFrameworkCore linq2db.EntityFrameworkCore是LINQ To DB与现有EntityFrameworkCore项目的集成。它受到EF.Core存储库中启发。建造状态提要 NuGet 蔚蓝神器（）独特的功能快速快速加载（在大规模Include查询中无法比拟的更快）全局查询过滤器优化更好SQL优化表提示快速数百万条记录通过LINQ查询更新，删除，插入记录的本机SQL操作临时表支持跨数据库/链接服务器查询。全文搜索扩展许多扩展涵盖了ANSI SQL 如何使用在您的代码中，您需要使用以下调用来初始化集成： LinqToDBForEFTools . Initialize (); 之后，您只需调用LINQ To DB提供的DbContext和IQueryable扩展方法即可。香草EF中缺少许多CRUD操作扩展（请）： // fast insert big recordsets ctx . BulkCopy ( new BulkCopyOptions {...}, items );

EntityFramework 是微软官方提供的ORM工具，能让开发人员节省数据库访问的代码和时间，将更多的时间放到业务逻辑层代码上。EF提供变更跟踪、唯一性约束、惰性加载、查询事物等。开发人员使用Linq语言，对数据库操作如同操作Object对象一样省事。本课程从Entity Framework的基本概念入手，循序渐进介绍了EF在.NET项目中的基本原理和使用方法，力求学员在较短时间内掌握EF的理论基础和具体用法。

This book is a step-by-step tutorial to guide you through learning WCF, Entity Framework, LINQ, and LINQ to Entities. You will be guided to create six WCF and Entity Framework solutions from scratch, of which three are multi-layered real-world WCF service solutions, so you will not only be reading, but also be coding through the book, to gain practical experience of WCF and Entity Framework. Various test clients will be associated with each solution and all solutions can be built and run independently of other solutions. Clear instructions and relevant screenshots will make sure you won't get lost in the world of WCF and Entity Framework. Configuration files, host applications, test clients, and WCF services for each solution will also be available for download for you to examine, modify, and debug from the outside in. The book focuses on the essentials of using WCF and Entity Framework, rather than providing a reference to every single possibility. It leaves the reference material online where it belongs, and concentrates instead on practical examples, code, and advice. What will you learn from this book Create a WCF service without using the built-in WCF templates so you can understand what's going on under the hood. Host a WCF service in IIS Express, ASP.NET Development Server, managed applications, IIS, and Windows Service. Explore and learn different debugging options for a WCF service. Build a multi-layer real-world WCF service from scratch to understand every layer of a WCF service and apply it to your real work. Learn basic and advanced concepts and features of Entity Framework, LINQ, and LINQ to Entities. Apply LINQ to Entities to the data access layer of a WCF service with Self Tracking Entities. Control concurrent updates to the database with WCF and LINQ to Entities. Add distributed transaction support to a WCF service. Understand various security settings of WCF, and host a WCF service with Basic Authentication, SSL, and Windows Authentication. Explore extension points of WCF and extend a WCF service with custom behaviors.

A comprehensive guide to the Entity Framework with insight into its latest features and optimizations for responsive data access in your projects About This Book Create Entity data models from your database and use them in your applications Learn about the Entity Client data provider and write statements in Entity SQL to perform CRUD operations Explore ADO.NET Data Services and how they work with the Entity Framework Who This Book Is For If you are a C# developer who wants to learn a new way of querying data and utilizing it in applications efficiently for data binding or other operations, then this book is for you. Basic knowledge of ADO.NET is assumed. What You Will Learn Explore the features of the ADO.NET Entity Framework Understand the concepts of entities and their relationships Create an Entity Data Model using the ADO.NET Entity Data Model Designer and the EdmGen tool Extend existing Entity Types to create your own Entity Types Write programs against the Entity Data Model to perform CRUD operations Discover ADO.NET Data Services and learn how they can be used with the Entity Framework Familiarize yourself with WCF Data Services (formerly ADO.NET Data Services) Apply Code First, Model First and Database First approaches In Detail The ADO.NET Entity Framework from Microsoft is a new ADO.NET development framework that provides a level of abstraction for data access strategies and solves the impedance mismatch issues that exist between different data models. This book explores Microsoft's Entity Framework and explains how it can used to build enterprise level applications. It will also teach you how you can work with RESTful Services and Google's Protocol Buffers with Entity Framework and WCF. You will explore how to use Entity Framework with ASP.NET Web API and also how to consume the data exposed by Entity Framework from client applications of varying types, i.e., ASP.NET MVC, WPF and Silverlight. You will familiarize yourself with the new features and improvements introduced in Entity Framework including enhanced POCO support, template-based code generation, tooling consolidation and connection resiliency. By the end of the book, you will be able to successfully extend the new functionalities of Entity framework into your project. Style and approach This book is a step-by-step tutorial providing hands-on code examples with detailed explanations. The book aims to explain the concepts of the Entity Framework and illustrate how you can use these in applications with a tutorial based approach. Table of Contents Chapter 1: Introducing the ADO.NET Entity Framework Chapter 2: Getting Started Chapter 3: Entities, Relationships, and the Entity Data Model Chapter 4: Working with Stored Procedures in the Entity Data Model Chapter 5: Working with Entity Client and Entity SQL Chapter 6: Working with LINQ to Entities Chapter 7: Working with the Object Services Layer Chapter 8: Working with WCF Data Services Appendix: Advanced Concepts

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