wpf-controls

问题 I have seen a lot of posts regarding this particular subject on SO as well as on the web in general and most if not all code is as seen below private void btnSubmit_Click(object sender, RoutedEventArgs e) { webBrowser1.Navigate(new Uri("http://samples.msdn.microsoft.com/workshop/samples/author/dhtml/refs/onsubmit.htm")); } private void btnLogin_Click(object sender, RoutedEventArgs e) { mshtml.HTMLDocument htmlDoc = null; htmlDoc = (mshtml.HTMLDocument) this.webBrowser1.Document; if

问题 I've got a custom Button class, that always performs the same action when it gets clicked (opening a specific window). I'm adding a Click event that can be assigned in the button's XAML, like a regular button. When it gets clicked, I want to execute the Click event handler if one has been assigned, otherwise I want to execute the default action. The problem is that there's apparently no way to check if any handlers have been added to an event. I thought a null check on the event would do it:

问题 I've got a custom Button class, that always performs the same action when it gets clicked (opening a specific window). I'm adding a Click event that can be assigned in the button's XAML, like a regular button. When it gets clicked, I want to execute the Click event handler if one has been assigned, otherwise I want to execute the default action. The problem is that there's apparently no way to check if any handlers have been added to an event. I thought a null check on the event would do it:

问题 I want to add a little Button , which removes all the text in the TextBox . Is it possible to put this "Remove"-Button into the TextBox (like in the iPhone Textboxs )? I hope after your help it looks like that: I played something with the controltemplate but didn't get the wished result. One way to solve this problem could be to use negative margins of the button, but i think that isn't a clean solution. Thank you! 回答1: You can easily derive from textbox and create your own textbox with the

问题 Hey all i am trying to add a label to my grid using the following code: Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles Button1.Click Dim dynamicLabel As New Label() Dim g As New Grid dynamicLabel.Name = "NewLabel" dynamicLabel.Content = "TEST" dynamicLabel.Width = 240 dynamicLabel.Height = 30 dynamicLabel.Margin = New Thickness(0, 21, 0, 0) dynamicLabel.Foreground = New SolidColorBrush(Colors.White) dynamicLabel.Background = New

问题 I have a simple Button control that contains an Image object as its content. I want so set the Image opacity to 0.5 when the Button is disabled to provide an additional visual cue as to the Button status. What is the simplest way to accomplish that result in XAML? Thanks for your help. 回答1: Use a trigger in the Image style. (It would be more natural to put it in the Button style, but the Button style can't easily affect the Image for annoying technical reasons. It could be done in the Button

问题 I see a strange behaviour dragging in Line shape over a Canvas that I cannot explain. The Line shape is in a Thumb DataTemplate like so: <DataTemplate DataType="{x:Type vm:MyLine}"> <Thumb DragDelta="Thumb_DragDelta"> <Thumb.Template> <ControlTemplate TargetType="Thumb"> <Line Fill="LightBlue" StrokeThickness="2" Y1="{Binding Y1}" Y2="{Binding Y2}" X1="{Binding X1}" X2="{Binding X2}" Stroke="LightBlue" x:Name="Line"/> </ControlTemplate> </Thumb.Template> </Thumb> </DataTemplate> The Canvas is

问题 I am creating a custom button that shows slightly faded text normally, and full-strength text on a MouseOver or MouseDown . I have defined two resources in the Generic.xaml of my control to represent the brushes for these text colors: <!-- Text Brushes --> <SolidColorBrush x:Key="NormalTextBrush" Color="Black" /> <SolidColorBrush x:Key="FadedTextBrush" Color="Gray" /> The control compiles and works fine in that configuration. But I want to let the control user set the text color, using the

问题 I am currently having a problem using the MouseDragElementsBehavior from the Blend SDK when using a ItemsControl and a Custom Canvas. My custom canvas simply adds or removes the MouseDragElement from its children depending on a DependencyProperty. This worked just fine when I was manually adding Items to the Canvas' children but appears to have broken when moving to an ItemsControl. I am currently using the following ItemsControl code: <ItemsControl ItemsSource="{Binding Path=CanvasItems}">

问题 I have sending multiple parameters from my Checkbox Command. I have used a converter. The code is below. If i put a debugger and see the values here are my results : When checkbox check is either checked or unchekcked : In the converter it has teh values (Array of the item object and boolean). But when i come to my method, the value is a object[2] but both values are NULL CheckBox XAML <CheckBox x:Name="checkBox" Content="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Content