If you want to update a progress bar in the main window of your application from another class, you could define a method in the main window class that updates the Value property of the ProgressBar and then call this method from the other class by accessing the static Application.Current.Ma...
another thread ThreadStart start = delegate() { // ... // Sets the Text on a TextBlock Control. // This will work as its using the dispatcher Dispatcher.Invoke(DispatcherPriority.Normal, new Action <string> (SetStatus), "From Other Thread"); }; // Create the ...
another thread ThreadStart start = delegate() { // ... // Sets the Text on a TextBlock Control. // This will work as its using the dispatcher Dispatcher.Invoke(DispatcherPriority.Normal, new Action <string> (SetStatus), "From Other Thread"); }; // Create the...
complicated and processor-intensive, then control wouldn’t be returned to the window message handle immediately and this could result in noticeable system hangs. To avoid hangs like this, the work is sent to the Windows Vista and Windows XP handlers via a post to the Dispatcher thread (see...
private void UpdateTextWrong() { this.txt.Text = "Here is some new text."; } 另一种通过在新建的线程上,调用本调度程序dispatch执行委托: private void cmdFollowRules_Click(object sender, RoutedEventArgs e) { Thread thread = new Thread(UpdateTextRight); ...
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说明:public DispatcherOperation BeginInvoke(DispatcherPriority priority, Delegate method);其中DispatcherPriority是从-1到10 的枚举值,10优先级最高。在UpdateTextRight方法中的一下代码段 this.Dispatcher.BeginInvoke(DispatcherPriority.Normal, (ThreadStart)delegate() ...
Thread thread=newThread(UpdateTextWrong); thread.Start(); }privatevoidUpdateTextWrong() { txt.Text="Here is some new text."; } 上面的代码注定会失败。UpdateTextWrong()方法将在新线程上执行,并且不允许这个新线 程访问WPF对象。TextBox对象通过调用VenfyAccess()方法捕获这一非法操作, ...
Input is on a separate thread from the WPFWebBrowser, so keyboard input cannot be intercepted and the IME state is not shared. The timing or order of navigation may be different due to the ActiveX control running on another thread. For example, navigating to a page is not always cancelled...