从其他线程更新UI [英] Update UI from different thread

问题描述

这是我的第一个问题.由于英语不是我的母语，所以请您原谅我的错误.

This is my first question here. As English is not my first language, forgive me for any mistakes.

我正在尝试为Windows Phone 8.1(XAML和C#)开发应用程序，并且正在使用.NET Framework 4.5.2. 我刚刚开始研究C#中的多线程，如果能有人帮助我，我将不胜感激.到目前为止，我发现的所有相关问题的答案都太复杂了.

I'm trying to develop an application for Windows Phone 8.1 (XAML and C#) and I'm using .NET Framework 4.5.2. I just started studying multithreading in C# and would appreciate if anyone here could help me. All answers to related questions I've found so far are too complex.

我所需要做的就是通过单击按钮创建一个新任务，该任务将在文本块控件中显示一条消息.

All I need is to create a new task from a button click that displays a message in a textblock control.

private void myButton_Click(object sender, RoutedEventArgs e)
{
    Task t = new Task(MyMethod);
    t.Start();
}

private void MyMethod()
{
    myTextBlock.Text = "Worked!";
}

我收到以下异常:该应用程序调用了一个已编组用于另一个线程的接口. (来自HRESULT的异常:0x8001010E(RPC_E_WRONG_THREAD)).

I'm getting the following exception: The application called an interface that was marshalled for a different thread. (Exception from HRESULT: 0x8001010E (RPC_E_WRONG_THREAD)).

我该如何纠正?

提前谢谢！

推荐答案

如果您使用async/await编程模型，则可以很容易地做到这一点.

If you use the async/await programming model, you could do this quite easily.

请尝试以下操作，而不是您拥有的内容:

Instead of what you have, try something like this:

private async void myButton_Click(object sender, RoutedEventArgs e)
{
    Task t = MyMethod();
    await t;
}

private async Task MyMethod()
{
    myTextBlock.Text = "Worked!";
}

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