Data Developer Center > Learn > Entity Framework > Get Started > Working with Transactions (EF6 Onwards) EF6 Onwards Only - The features, APIs, etc. discussed in this page were introduced in Entity Framework 6. If you are using an earlier vers…

本文转自:http://www.cnblogs.com/xiepeixing/p/5275999.html Working with Transactions (EF6 Onwards) This document will describe using transactions in EF6 including the enhancements we have added since EF5 to make working with transactions easy. What EF doe…

When writing tests for your application it is often desirable to avoid hitting the database.  Entity Framework allows you to achieve this by creating a context – with behavior defined by your tests – that makes use of in-memory data. This article wil…

https://msdn.microsoft.com/en-us/data/jj680699#Using…

Working with Transactions (EF6 Onwards) This document will describe using transactions in EF6 including the enhancements we have added since EF5 to make working with transactions easy. What EF does by default How the APIs work Combining several opera…

在博客园很久了,一直只看不说,这是发布本人的第一个博客. 总结一下在项目中,EntityFramework使用的一下经验拿来和大家分享,希望对大家有用~ 1.         在Entity Framework中使用事务 1) TransactionScope using (BlogDbContext context =new BlogDbContext()) { using (TransactionScope transaction =new TransactionScope()) { con…

原文:https://msdn.microsoft.com/en-us/data/dn456843.aspx Prior to EF6 Entity Framework insisted on opening the database connection itself (it threw an exception if it was passed a connection that was already open). Since a transaction can only be start…

引言 在EntityFramework的开发过程中我们有时因需求变化或者数据结构设计的变化经常会改动表结构.但数据库Schema发生变化时EF会要求我们做DataMigration 和UpdateDatabase.但在这个过程中如何才能保证现有数据库的数据存在. 另外本文只针对CodeFirst的方式来做.   准备一个简单的 EFCodeFirst Demo   创建一个控制台程序 MigrationsDemo NuGet 获取最新版 EntityFramework  Tools –> Lib…

最近开发的服务放到IIS上寄宿之后,遇到一些现象,比如刚部署之后,第一次启动很慢:程序放置一会儿,再次请求也会比较慢.比如第一个问题,可以解释为初次请求某一个服务的时候,需要把程序集加载到内存中可能比较慢,第二个问题有可能是IIS的线程回收机制导致放置若干长时间,空闲的进程被回收了,再次请求的话可能比较慢. 刚开始的时候没有太在意,但是随着系统的发布,这种初次请求,或者闲置若干时间后第一次请求的漫长等待使得App的体验很差,很多时候App加载好半天数据都没过来.如果前端没处理好,还会导致App的…

应用程序为什么要异步化?关于这个原因就不多说了,至于现有项目中代码异步化改进,可以参考:实际案例:在现有代码中通过async/await实现并行 这篇博文内容针对的是,EntityFramework 中的代码异步化,示例代码就用之前写过的一篇博文:初试Code First(附Demo),下面是我在代码改进的过程中遇到的问题记录: Net Framework 版本修改为 4.5 以上,否则讲报"找不到"async"修饰符所需的所有类型.是否面向了错误的框架版本,或缺少对程序集的…