Windows phone C# 将文本更新到 GUI mainpage.xaml.cs？

Question

我正在尝试将文本从线程更新到主 GUI 线程，但抛出了异常，因为它在不同的线程中。我尝试使用 Dispatcher.CheckAccess()、BeginInvoke() 但此项目不是 Silverlight 或 WPF。我尝试了旧式的 InvokeRequired、Invoke()，但这些都不可用。

StartTest.cs:

    public StartTest(MainPage mainPage)
    {
        mainPageObj = mainPage;
    }

    public async Task RunTest(string testCase)
    {
        await Task.Run(() => RunTestCase(testCase));
    }

    public bool RunTestCase(string testcase)
    {
        switch (testcase)
        {
            case "testcase1":
                int i = 0;
                while (i < 10000)
                {
                    i++;
                }
                mainPageObj.UpdatePassFail(true);//update the main GUI
                break;

            case "testcase2":
                mainPageObj.UpdatePassFail(false);//update the main GUI
                break;
        }

        return false;
    }

Mainpage.xaml.cs:

 public void UpdatePassFail(bool pass)
    {
        try
        {             
            if (pass == true)
            {
                passCount++;
                passFailCount = passCount + failCount;

                textBlock_passTotal.Text = passCount.ToString();
                textBlock_passFailTotal.Text = passFailCount.ToString();
            }
            else if (pass == false)
            {
                failCount++;
                passFailCount = passCount + failCount;

                textBlock_failTotal.Text = failCount.ToString();
                textBlock_passFailTotal.Text = passFailCount.ToString();
            }
        }
        catch(Exception error)
        {
            textBlock_tapInfo.Text = error.Message;
        }            
    }

更新：

将以下语句放入第一个 if 语句后，更新后的数据显示在主 GUI 中。

Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
                {
                    textBlock_passTotal.Text = passCount.ToString();
                    textBlock_passFailTotal.Text = passFailCount.ToString();
                });

Answer 1

您应该在 WP 8.1

中使用 CoreDispatcher

CoreDispatcher dispatcher = CoreWindow.GetForCurrentThread().Dispatcher;
await dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => 
{ 
       //UI code goes here
}
);

参考MSDNlink关于CoreDispatcher

Windows phone C# 将文本更新到 GUI mainpage.xaml.cs？

Windows phone C# updating text to GUI mainpage.xaml.cs?

c#

windows-phone-8.1