在我的网站上,我有一个活动日历:
现在你会注意到它们组织得很好。
这是管理员用来组织项目的功能。
这是问题所在。
当发生这种情况时,我使用事务范围,因为它修改了多个事件并可能失败:
例如:
//needs id '9999'
public string Explode()
{
string eid = Request.Form["id"];
using (TransactionScope scope = new TransactionScope(TransactionScopeOption.Required, new System.TimeSpan(2, 45, 0)))
{
try
{
int id = int.Parse(eid);
Project p = ProjectManager.GetProject(id);
int resID = p.Schedule.Employee.EmployeID;
Employee e = ResourceManager.GetEmployee(resID);
if (e == null)
throw new Exception();
var tasks = ProjectManager.GetProjectTasks(id);
var ordered = SyncManager.Instance.GetTasks((int)p.PaymoID);
Task firstTask = null;
foreach (Paymo.Task t in ordered)
{
Task tsk = (from obj in tasks where obj.PaymoID != null && obj.PaymoID.Value == t.ID select obj).FirstOrDefault();
if (tsk != null && t.UserName == e.EmployeName
&& tsk.Schedule == null)
{
if (firstTask == null)
{
firstTask = tsk;
}
int scheduleID = ScheduleManager.CreateSchedule(p.Schedule.DateFrom.Value
,t.BudgetHours <= 0 ? 1.0M : t.BudgetHours , e.EmployeID);
if (scheduleID == -1)
throw new Exception();
if (!ScheduleManager.ChangeTaskSchedule(tsk.TaskID, scheduleID))
throw new Exception();
if (!ScheduleManager.GiveLowestPriority(ScheduleManager.GetSchedule(scheduleID)))
{
throw new Exception();
}
}
}
ScheduleManager.ChangeProjectSchedule(p.ProjectID, null);
if (firstTask != null)
{
Bump b = new Bump();
b.DoBump(firstTask.Schedule);
}
scope.Complete();
}
catch (Exception)
{
return "fail";
}
}
return "";
}
现在的问题是,当事务发生时,如果用户试图以只读模式访问日历,他们必须等待才能看到它。
在交易期间,网站是否还有某种方式可以加载? 我使用LINQ SQL和SQL Server 2008以及VS 2012。
答案 0 :(得分:2)
将您的使用更改为:
new TransactionScope(TransactionScopeOption.Required, new TransactionOptions() { IsolationLevel = IsolationLevel.ReadCommitted,Timeout = new System.TimeSpan(2, 45, 0) }));