wpf-controls

问题 I want to learn how to use Dependency Objects and Properties. I have created this class, public class TestDependency : DependencyObject { public static readonly DependencyProperty TestDateTimeProperty = DependencyProperty.Register("TestDateTime", typeof(DateTime), typeof(TestDependency), new PropertyMetadata(DateTime.Now)); public DateTime TestDateTime { get { return (DateTime) GetValue(TestDateTimeProperty); } set { SetValue(TestDateTimeProperty, value); } } } The window class is like this

问题 I need a button for two purposes: - Users can drag the application's window using the button - Users can simply click the button to toggle visibility of some other element in the window. The button is a PNG image. I am trying to do it in the following way: XAML: <Button Name="toggleButton" Click="toggleButton_Click" Canvas.Left="177" Canvas.Top="0"> <Button.Template> <ControlTemplate> <Image Source="/FootballRssReader;component/images/ball.png" MouseLeftButtonDown="toggleButton

问题 I have a WPF page used as an input form which contains a number of controls on one side, and a flow document reader on the other. I want to set the content of this document reader to a specific part of a flow document which is loaded when the form is loaded, (via a loaded event). I have found an article explaining how to do this, using fragments, but the examples shown are only expressed in XAML. In my case I need to update the document property of the flow document reader when the user gives

问题 I have a TextBox in my WPF window. I have a property in the code behind called Text as well. I want the text property to be bound to the Text property (i.e. when the value changes in the property the textbox value should also be updadated. Thanks 回答1: You have to set the DataContext of the TextBox control (or of any of its parents) to your window: myTextBox.DataContext = this; then in your XAML: <TextBox Text={Binding Text} x:Name="myTextBox"/> 来源： https://stackoverflow.com/questions/1734969

问题 In a WPF project (code below) I have a UserControl of type MyUserControl with a dependency property, called MyOrientation of type Orientation . On the MainWindow I have 2 instances of MyUserControl , where via XAML I set the Orientation property on one to be Horizontal and the other instance to be Vertical . I have made the MyOrientation property a DP as I want the ability to set it directly in XAML as in this example or using a binding. My problem is that when I run the project both

问题 I'm writing a WPF project that is effectively a ticker that runs at the bottom of the screen, above the taskbar. I need the ticker to: 1) Reside directly above the taskbar 2) Stay on top of all other windows 3) To continue to do so if the taskbar is set to auto-hide, without obstructing the taskbar 4) Make it so that other windows, which are maximized, don't occupy the space behind the ticker. So it should behave the same way as the task bar, in that it occupies permanent desktop space, which

问题 I have a user control let say UC1 . This user control have viewmodel UC1_vm. In the usercontrol UC1 I have a canvas in which drawing curve logic is implemented. This drawing curve logic is based on the data points property in the view model ( UC1_vm). The data points property inside the view model change with different condition. The generation of data points is written in the View Model. I want to bind the data points property in the view model to the draw curve logic inside the User control

问题 How can I set the Mouse cursor in xaml? What's the use of Cursor property in every control? Please don't answer as Cursor="Arrow" cause this is not working. Only way I can do it right now is from code behind by Mouse.OverrideCursor . Can I do it simply using XMAL? I have a Hierarchy of controls where there is a GridSplitter in between somewhere. I'm trying to set the Cursor to SizeNS but it's set to default as default Arrow . What Should I do? 回答1: In WPF Cursor creates problem when controls

问题 Good day. I have a ribbon button with glowing effects when hover. But I wanted also to change the image every time I hover it without losing the glowing effects. Can anyone help me with this? This is what I have so far. <pbwpf:Window.Resources> <Style TargetType="{x:Type my:Ribbon}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type my:Ribbon}"> <StackPanel Orientation="Vertical" Height="750" Background="#111111"> <my:RibbonButton Name="rb_new" Margin="0,40,0,0"

问题 Is it possible to change the parent of a WPF control? Here is an example: StackPanel stack1 has Button btn1 in it. There is another empty StackPanel stack2. I want to move the btn1 to stack2 programmatically. Thanks for the help. 回答1: You can do this via the StackPanel.Children property: stack1.Children.Remove(btn1); stack2.Children.Add(btn1); 来源： https://stackoverflow.com/questions/17222161/is-it-possible-to-change-parent-of-wpf-control