WPF System.InvalidOperationException:调用线程无法访问此对象，因为另一个线程拥有它 [英] WPF System.InvalidOperationException: The calling thread cannot access this object because a different thread owns it

问题描述

在Windows中，我有一个TextBox，我想从另一个线程更新(文本属性).这样做时，我得到InvalidOperationException(请参见标题).我在Google中找到了不同的链接来对此进行解释，但我似乎仍然无法使其正常工作.

In my Windows I have a TextBox which I like to update (text property) from another thread. When doing so, I get the InvalidOperationException (see title). I have found different links in google explaining this, but I still can't seem to make it work.

我尝试过的是这个

Window1代码:

Window1 code:

private static Window1 _myWindow;
private MessageQueueTemplate _messageQueueTemplate;
private const string LocalTemplateName = "LocalExamSessionAccessCodeMessageQueueTemplate";
private const string RemoteTemplateName = "RemoteExamSessionAccessCodeMessageQueueTemplate";

...
public Window1()
{
    InitializeComponent();
    _myWindow = this;
}

public static Window1 MyWindow
{
    get
    {
        return _myWindow;
    }
}

public void LogText(string text)
{
    informationTextBox.Text += text + Environment.NewLine;
}
...

在另一个类中(实际上是一个spring.NET Listener适配器，用于侦听某个队列，是在另一个线程中启动的.)

In another class (actually a spring.NET Listener adapter, listening to a certain queue, started in another thread).

var thread = new Thread(
    new ThreadStart(
        delegate()
            {
                Window1.MyWindow.Dispatcher.Invoke(
                    System.Windows.Threading.DispatcherPriority.Normal,
                    new Action(
                        delegate()
                            {
                                Window1.MyWindow.LogText(text);
                            }
                        ));
            }
        ));

它不会引发错误，但是不会触发Window1中LogText方法中的文本，因此不会更新文本.

It doesn't throw an error, but the text in the LogText method in Window1 isn't triggered, so the text isn't updated.

所以基本上，我想从在另一个线程中运行的另一个类更新此TextBox组件.

So basically, I want to update this TextBox component from another class running in another thread.

推荐答案

Window1.MyWindow.informationTextBox.Dispatcher.Invoke(
    DispatcherPriority.Normal,
    new Action(() => Window1.MyWindow.informationTextBox.Text += value));

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