binding

问题 I have a ItemsControl in my program that contains a list of radio buttons. <ItemsControl ItemsSource="{Binding Insertions}"> <ItemsControl.ItemTemplate> <DataTemplate> <Grid> <RadioButton GroupName="Insertions"/> </Grid> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> How do I find the selected radio button in the group Insertions in a MVVM manner? Most of the examples I have found on the internet involve setting individual boolean properties that you bind the IsChecked property

问题 I want to use MVVM in an application where the different pages are TabItems. For this I use an observable collection of my view models (Items) and bind it to the tabcontrols ItemSource. For each view model, I created an individual data template to render the correct view like this: <DataTemplate DataType="{x:Type baseVm:AViewModel}"> <baseVw:AView /> </DataTemplate> To display the correct name in the tab's header I created another data template to be applied to each of the tab control's

问题 i wonder if it is possible to cascade converters when using wpf databinding. e.g. something like <SomeControl Visibility="{Binding Path=SomeProperty, Converter={StaticResource firstConverter}, Converter={StaticResource secondConverter}}"/> is it possible at all or do i have to create a custom converter that combines the functionality of converter A and B? 回答1: You could try to use a MultiBinding , and bind twice to the same source, but with different converts on the single bindings. Something

问题 i wonder if it is possible to cascade converters when using wpf databinding. e.g. something like <SomeControl Visibility="{Binding Path=SomeProperty, Converter={StaticResource firstConverter}, Converter={StaticResource secondConverter}}"/> is it possible at all or do i have to create a custom converter that combines the functionality of converter A and B? 回答1: You could try to use a MultiBinding , and bind twice to the same source, but with different converts on the single bindings. Something

问题 I'd just like to understand the decisions behind Backbone.Marionette's view regarding UI elements. When instantiating a Marionette.View on an existing DOM element, like this: view = new Marionette.ItemView({ el: "#element", ui : { whatever : "#whatever" } }); I am able to access view.$el , the jquery selector inside view.initialize , so far so good. However, when I try to access view.ui.whatever , I only have access to the selector, ie the string "#whatever" instead of the actual $("#whatever

问题 Not sure whats doing here, but the binding works for the label in the data template but not the tool tip. Any help will be appreciated. <DataTemplate DataType="Label"> <StackPanel Orientation="Horizontal" HorizontalAlignment="Left"> <StackPanel.ToolTip> <ToolTip DataContext="{Binding Path=PlacementTarget, RelativeSource={x:Static RelativeSource.Self}}"> <TextBlock Text="{Binding Path=DataContext.Description}" /> </ToolTip> </StackPanel.ToolTip> <Image Source="{StaticResource ApplicationInfoS}

问题 I have the following code which populates my user control in form of rows and column. The user control which is being populated contains Button, links, textbox etc. When a certain button is pressed on a particular User Control in a particular row/column, I need to know for which User Control that button was pressed. Here is the XAML that is populating the user controls in rows and columns <ItemsControl ItemsSource="{Binding Templates}" Width="{Binding GridWidth}"> <ItemsControl.ItemsPanel>

问题 I've bound a TextBox to a Decimal. My problem ist, the Binding is using american numerical standards, using a dot for decimals separation ("1.5") My system is german and configured to use a comma as decimals separation ("1,5"). I need the TextBox binding to show and use a comma instead of a dot to separate decimals. How do I get the binding to respect the currently set localization/culture settings for numerical input? 回答1: Read this article. You should set default language for all framework

问题 What does event binding mean? I always come across this word whenever I search around the internet and whatever I try to look for the meaning, it's still vague to me @_@ A while ago, while reading some blogs regarding JavaScript I see people using this sacred word that I cannot grasp. 回答1: Event binding refers to telling the browser that a particular function should be called whenever some 'event' occurs. Events mostly relate to user input, such as clicks. An example of binding to an event in

问题 If my code looks somewhat like the code beneath, would it be possible to refresh all bindings directly or would I have to hard-code all the bindings to refresh? Service-side: [ServiceContract] public interface IMyServiceContract { [OperationContract] MyDataContract GetData(); } [ServiceBehavior] public class MyService { [OperationBehavior] public MyDataContract GetData() { MyDataContract data = new MyDataContract(); data.val1 = "123"; data.val2 = "456"; return data; } } [DataContract] public