如何在实体框架中回滚事务

问题描述

string[] usersToAdd = new string[] { "asd", "asdert", "gasdff6" };
using (Entities context = new Entities())
{
    foreach (string user in usersToAdd)
    {
        context.AddToUsers(new User { Name = user });
    }
    try
    {
        context.SaveChanges(); //Exception thrown: user 'gasdff6' already exist.
    }
    catch (Exception e)
    {
        //Roll back all changes including the two previous users.
    }

或者这可能是自动完成的，这意味着如果发生错误，则会取消所有更改的提交更改.是吗?

Or maybe this is done automatically, meaning that if error occurs, committing changes are canceled for all the changes. is it?

推荐答案

OK

我创建了一个示例应用程序，就像我在数据库中检查的问题和后记中的示例一样，没有添加任何用户.

I created a sample a application like the example from the the question and afterwords I checked in the DB and no users were added.

结论:ObjectContext.SaveChange 它自动是一个事务.

注意:如果执行 sprocs 等，我相信交易是需要的.

Note: I believe transactions will be needed if executing sprocs etc.

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