2
一个类似的问题被问到here但没有答案。SQL CE 4 System.Transaction支持
我试图使用System.Transactions.CommittableTransaction与EF CTP4和SQL CE 4
我已经创建了下面的事务属性为我的ASP.NET MVC控制器行动:
public class TransactionAttribute : ActionFilterAttribute
{
CommittableTransaction transaction;
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
transaction = new CommittableTransaction();
Transaction.Current = transaction;
base.OnActionExecuting(filterContext);
}
public override void OnResultExecuted(ResultExecutedContext filterContext)
{
base.OnResultExecuted(filterContext);
try
{
var isValid = filterContext.Exception == null || filterContext.ExceptionHandled;
if (filterContext.Controller.ViewData.ModelState.IsValid && isValid) {
transaction.Commit();
} else {
transaction.Rollback();
Transaction.Current = null;
}
}
finally
{
transaction.Dispose();
}
}
}
当我使用这个过滤器时,我得到错误:
System.InvalidOperationException:连接对象不能在事务范围内注册。
但是,以下测试通过:
[Test]
public void Transaction_rolls_back_if_exception()
{
var transaction = new CommittableTransaction();
Transaction.Current = transaction;
try
{
var project = new Project { Title = "Test" };
projectRepo.SaveOrUpdate(project);
context.SaveChanges();
var post = new Post { Title = "Some post" };
blogRepo.SaveOrUpdate(post);
throw new Exception();
context.SaveChanges();
transaction.Commit();
}
catch (Exception ex)
{
transaction.Rollback();
Transaction.Current = null;
}
projectRepo.GetAll().Count().ShouldEqual(0);
blogRepo.GetAll().Count().ShouldEqual(0);
}
有这事做我是如何初始化的DbContext?