listpicker

问题 When I bind my data via item source to my ListPicker : C#: var sightingTypes = SightingTypes.List; sightingTypesPicker.ItemsSource = sightingTypes; XML: <toolkit:ListPicker x:Name="sightingTypesPicker" ItemsSource="{Binding sightingTypes, ElementName=this}"> <toolkit:ListPicker.ItemTemplate> <DataTemplate> <StackPanel> <TextBlock Text="{Binding Name}" FontSize="{StaticResource PhoneFontSizeSmall}"/> </StackPanel> </DataTemplate> </toolkit:ListPicker.ItemTemplate> </toolkit:ListPicker> I can

问题 Ok. I give up. I want to use ListPicker control in one of my Windows Phone apps. I am getting an Exception SelectedItem must always be set to a valid value . This is my XAML piece of ListPicker: <toolkit:ListPicker x:Name="CategoryPicker" FullModeItemTemplate="{StaticResource CategoryPickerFullModeItemTemplate}" Margin="12,0,0,0" ItemsSource="{Binding CategoryList}" SelectedItem="{Binding SelectedCategory, Mode=TwoWay}" ExpansionMode="ExpansionAllowed" FullModeHeader="Pick Categories"

问题 I'm trying to do a two way binding of the SelectedIndex attribute of a ListPicker in a Windows Phone 7 UserControl. It raises the following exception when I set the DataContext: SelectedIndex must always be set to a valid value. This is the XAML code <Grid x:Name="LayoutRoot"> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition Height="Auto"/> </Grid.RowDefinitions> <toolkit:ListPicker Grid.Row="0" x:Name="List1" SelectionChanged="Picker_SelectionChanged" SelectedIndex="

问题 I've noticed that by default in a ListPicker the border and currently selected item's text automatically are the phone's accent color. I was wondering how it would be possible to hard code these values to another color (which would be selected within the ListPicker itself). For instance, my phone theme is lime but I would like to manually set the border and highlighted text color to cobalt when the cobalt item is selected. Same for cyan, red, and so forth. My ListPicker looks like this XAML

问题 I have a SelectionChanged event in a ListPicker within one of my application Pages that fires multiple times before the page is loaded. This is really inconvenient for me as when an item is selected, a MessageBox is displayed (and other actions will be performed). The MessageBox is displayed twice every time the page is NavigatedTo. How can I fix this? XAML <toolkit:ListPicker x:Name="ThemeListPicker" Header="Theme" ItemTemplate="{StaticResource PickerItemTemplate}" SelectionChanged=

问题 I'm developing windows Phone 8 application. In my app i use List Picker .list picker value is bind from web service (json format) My web service result return format [ - { id: "9", name: "Pizza", root_id: "4", level: "1" }, -{ id: "10", name: "Fine Dining", root_id: "4", level: "1" }, ] My XAML code for list picker <toolkit:ListPicker x:Name="filterpicker" SelectionChanged="filterpicker_SelectionChanged" Tap="filterpicker_Tap" Foreground="White" BorderThickness="0" Margin="395,-100,0,10"

问题 I have run into a problem with the listpicker. I have a settings page with a option called "Decimals" where you can toggle a "Toggleswitch" and if you turn the toggle on, the listpicker gets enabled. Now when you click on the listpicker, you can choose from 1 to 5 as the amount of decimals. If you choose for example the number "3" in the listpicker, it will get saved to a key on isolated storage with the value 3, if you go to the MainPage it will check the isolatedstorage and if it contains

问题 I'm getting this exception whenever i try to access m list picker control in my app. + this {App_name.App} App_name.App + sender {App_name.App} object {App_name.App} - e {System.Windows.ApplicationUnhandledExceptionEventArgs} System.Windows.ApplicationUnhandledExceptionEventArgs + base {System.Windows.ApplicationUnhandledExceptionEventArgs} System.EventArgs {System.Windows.ApplicationUnhandledExceptionEventArgs} + ExceptionObject {System.ArgumentException: Value does not fall within the

问题 I am using this code for create listpicker in windows phone. <StackPanel Height="148" Margin="0,100,0,0"> <toolkit:ListPicker Grid.Row="0" FontFamily="Segoe WP Semibold" Height="176" x:Name="Additional_Time" ItemTemplate="{StaticResource PickerItemTemplate}" FullModeItemTemplate="{StaticResource PickerFullModeItemTemplate}" FullModeHeader="Cities" SelectedIndex="0" CacheMode="BitmapCache" Header="Choose Exit Time" FontSize="30" SelectionChanged="Additional_Time_SelectionChanged"/> <

问题 After being advised that the native ComboBox was not the way to go I was told to look at the Silverlight Toolkit ListPicker . So I did and have got a problem. I opened a new project and pulled a new ListPicker onto the MainPage. The ListPicker looks like: <toolkit:ListPicker x:Name="Result"> <toolkit:ListPickerItem Content="Win" /> <toolkit:ListPickerItem Content="Place" /> <toolkit:ListPickerItem Content="Lose" /> </toolkit:ListPicker> When trying to run this I get an XamlParseException with