C#,我可以检查锁而不试图获取它吗？

Question

我在我的c#web应用程序中有一个锁,它阻止用户在启动后运行更新脚本.

我以为我会在我的母版页中发出通知,让用户知道数据还不是全部.

目前我这样锁定.

protected void butRefreshData_Click(object sender, EventArgs e)
{
    Thread t = new Thread(new ParameterizedThreadStart(UpdateDatabase));
    t.Start(this);
    //sleep for a bit to ensure that javascript has a chance to get rendered
    Thread.Sleep(100);
}


public static void UpdateDatabase(object con)
{
    if (Monitor.TryEnter(myLock))
    {
        Updater.RepopulateDatabase();
        Monitor.Exit(myLock);
    }
    else
    {
        Common.RegisterStartupScript(con, AlreadyLockedJavaScript);
    }
}

我不想这样做

if(Monitor.TryEnter(myLock))
    Monitor.Exit(myLock);
else
    //show processing labal

正如我想象的那样,它可能会在实际运行时显示通知.

有没有我可以使用的替代方案？

编辑:
大家好,非常感谢您的建议!不幸的是我无法让他们工作......但是我将这两个想法结合起来并提出了我自己的解决方案.它似乎工作到目前为止,但我必须等待该过程完成...

好吧,这似乎有效,我将Repopule方法分解为它自己的类.

public static class DataPopulation
{
    public static bool IsUpdating = false;
    private static string myLock = "My Lock";
    private static string LockMessage = @"Sorry, the data repopulation process is already running and cannot be stopped. Please try again later. If the graphs are not slowly filling with data please contact your IT support specialist.";
    private static string LockJavaScript = @"alert('" + LockMessage + @"');";
    public static void Repopulate(object con)
    {
        if (Monitor.TryEnter(myLock))
        {
            IsUpdating = true;
            MyProjectRepopulate.MyProjectRepopulate.RepopulateDatabase();
            IsUpdating = false;
            Monitor.Exit(myLock);
        }
        else
        {
            Common.RegisterStartupScript(con, LockJavaScript);
        }
    }
}

掌握我做的

protected void Page_Load(object sender, EventArgs e)
{
    if (DataPopulation.IsUpdating)
        lblRefresh.Visible = true;
    else
        lblRefresh.Visible = false;
}

Answer 1

是否可以通过回调方法在某处设置一个 volaltile bool 属性来指示活动锁？