Question

我是c＃的初学者，我编写这段代码来启动新主题：

Thread workerThread = new Thread(DoWork);
workerThread.Priority = ThreadPriority.Highest;
workerThread.Start();

在向上线程过程中有一些东西并显示在图表中，每件事都没问题，但是当运行并完成DoWork方法时，图表控件可见自动设置为false！我的DoWork方法是：

public void DoWork()
{
     //.....some process and show into the process result into the chart
     chart1.Visible = true;//this code not run
}

怎么解决这个问题？

Answer 1

您无法访问其他线程中的UI元素。

对于Winforms： How to update the GUI from another thread in C#?

对于WPF： Change WPF controls from a non-main thread using Dispatcher.Invoke

chart1.Dispatcher.Invoke(() =>chart1.Visible = true);

Answer 2

将您的Dowork方法签名更改为接受object作为参数，并将Synchronization上下文传递给它：

    void DoWork(object o)
    {           
        SynchronizationContext cont = o as SynchronizationContext;

        // your logic gere
        cont.Post(delegate
        {
            // all your UI updates here 
        }, null);
    }

   Thread workerThread = new Thread(DoWork);
   workerThread.Priority = ThreadPriority.Highest;
   workerThread.Start(SynchronizationContext.Current);

如何在c＃thread中设置visible值为true？

2 个答案: