<TextBox x:Name="textBox" /> <Button FocusManager.FocusedElement="{Binding ElementName=textBox}" Content="Set Focus" /> 通过触发事件设置焦点:可以在特定事件的处理程序中设置焦点,例如在按钮的Click事件中设置焦点: 代码语言:txt 复制 private void Button_Click(object sender, RoutedEventArgs e) { te...
不知道为什么它在GotFocus事件中丢失了选择。但是一种解决方案是对GotKeyboardFocus和GotMouseCapture事件...
{this.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Render,newAction(()=>{ t.extBox.Focus(); }));//改方法能解决掉LoseFocuse出现死循环的问题} timerLoseFocuse.Stop(); };//////失去焦点事件///privatevoidtextBox_LostFocus(objectsender, RoutedEventArgs e) { timerLoseFocuse....
fe.IsVisibleChanged -= fe_IsVisibleChanged; fe.Focus(); } } privatestaticvoidFrameworkElement_GotFocus(objectsender, RoutedEventArgs e) { ((FrameworkElement)sender).SetValue(IsFocusedProperty,true); } privatestaticvoidFrameworkElement_LostFocus(objectsender, RoutedEventArgs e) { ((FrameworkElement)send...
在WPF(Windows Presentation Foundation)中,TextBox失去焦点事件是一个非常重要的概念,它通常用于在用户完成输入后进行某些操作,如验证输入、更新UI状态或执行其他逻辑。以下是关于WPF TextBox失去焦点事件的详细解释和示例代码。 1. 什么是WPF中的TextBox失去焦点事件? WPF中的TextBox失去焦点事件指的是,当TextBox控件...
fe.IsVisibleChanged += new DependencyPropertyChangedEventHandler(fe_IsVisibleChanged); } if ((bool)e.NewValue) { fe.Focus(); } } private static void fe_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e) { var fe = (FrameworkElement)sender; ...
TextBox tb = e.Source as TextBox; tb.Focus(); e.Handled = true; } void OnGotFocus(object sender, RoutedEventArgs e) { TextBox tb = e.Source as TextBox; tb.SelectAll(); tb.PreviewMouseDown -= new MouseButtonEventHandler(OnPreviewMouseDown); } ...
tb.Focus(); e.Handled=true; } }privatevoidtextBox1_LostFocus(objectsender, RoutedEventArgs e) { TextBox tb= senderasTextBox;if(tb !=null) { tb.PreviewMouseDown+=newMouseButtonEventHandler(textBox1_PreviewMouseDown); } } } } 1.
</TextBox> 关键点在于鼠标按下之时 tb.Focus(); e.Handled=true; 由这里引发GotFocus事件 并且设置Handled 标记阻止路由事件继续传播 在GotFocus的事件里面利用tb.SelectAll()全选 tb.PreviewMouseDown -= new MouseButtonEventHandler(OnPreviewMouseDown); ...
最后,在xaml页面将textbox的style设为上面的值即可; 2、重写控件 classVKTextBox : TextBox {protectedoverridevoidOnInitialized(EventArgs e) {base.OnInitialized(e); }protectedoverridevoidOnGotFocus(RoutedEventArgs e) {base.OnGotFocus(e); \\TODO ...