Dispatcher.Invoke 和线程访问的问题
我尝试在 C# 中处理线程，但发生了一个奇怪的异常，我不知道如何解决。我有一个由BackgroundWorker运行的方法，其中有这样一段代码：
GridView gridView;
DataView dataView;
queryTable.GetViewAndDataView(out gridView, out dataView);
this.listView.Dispatcher.Invoke(DispatcherPriority.Normal, new Action(
delegate() {
listViewView = gridView;
listView.ItemsSource = dataView;
}
));
GetViewAndDataView填充gridView和dataView，而委托代码设置当前listView。使用 Invoke 应该不会引发异常，但是当我尝试运行它时，我得到了：调用线程无法访问此对象，因为另一个线程拥有它。
任何人都知道如何处理此类异常，或者至少知道如何禁用拥有的线程对象？
I've trying to handle threads in C#, but i've occurred in a wierd exception I don't know how to resolve. I've got a method running by BackgroundWorker, in which there's this piece of code:
GridView gridView;
DataView dataView;
queryTable.GetViewAndDataView(out gridView, out dataView);
this.listView.Dispatcher.Invoke(DispatcherPriority.Normal, new Action(
delegate() {
listViewView = gridView;
listView.ItemsSource = dataView;
}
));
GetViewAndDataView fills a gridView and dataView, while the delegate code sets the current listView. The using of Invoke is supposed not to raise exceptions, but when I try to run it, I obtain this: The calling thread cannot access this object because a different thread owns it.
Anyone knows of to handle such exception, or at least, how to disable the thread object owning?
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该消息是正确的，您无法在后台线程上创建控件并在 UI 线程上使用它们。您必须在 UI 线程上创建并分配它们。我建议首先在后台线程中加载数据，然后在 UI 线程中完成其余工作
The message is correct, you cant create the controls on a background thread and use them on your UI Thread. You have to both create and assign them on your UI thread. I recommend loading your data first in your background thread followed by doing the rest of your work in the UI Thread
在运行并行线程之前，您需要将
this.listView.Dispatcher保存到某个局部变量。在 thred 中，您必须使用此变量中的调度程序。但是 @Polity 是对的 - 您必须创建控件UI 线程上的 /elements。在并行线程中，您只能创建非 UI 对象。
You need save
this.listView.Dispatcherto some local variable before you run the parallel thread. In the thred you must use dispatcher from this variable.However @Polity is right - you must create controls/elements on UI thread. In parallel threads you can create only non-UI objects.