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[英]How to get the content text from the selected item ListPicker Windows Phone 8.1 Silverlight?
[英]How to get selected item from AutoSuggestBox in Windows Phone 8.1
在CS文件中,“ SelectedItem”無法正常工作,WP8.1中的AutoSuggestBox可以替代“ SelectedItem”
在XAML文件中:
<AutoSuggestBox x:Name="tblkpersonname" Width="380" Margin="0,-7,0,0" ItemsSource="{Binding}" TextChanged="tblkpersonname_TextChanged">
<AutoSuggestBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Name}"
Tag="{Binding PersonID}"/>
</DataTemplate>
</AutoSuggestBox.ItemTemplate>
</AutoSuggestBox>
在Cs文件中:
private void tblkpersonname_TextChanged(AutoSuggestBox sender, AutoSuggestBoxTextChangedEventArgs args)
{
try
{
if (tblkpersonname.SelectedItem != null)
{
tblkdes.Text = ((values)tblkpersonname.SelectedItem).Description;
persononlineimg.Source = new BitmapImage(new Uri(((values)tblkpersonname.SelectedItem).FlickrPersonImageUrl, UriKind.RelativeOrAbsolute));
}
}
catch (Exception ex)
{
Exceptions.SaveOrSendExceptions("Exception in tblkpersonname_SelectionChanged_1 Method In AddCast.cs file.", ex);
}
}
Windows Phone 8.1隨附的AutoSuggestBox中沒有“ SelectedItem”,Windows 10的開發人員工具中也沒有“ SelectedItem”。AutoSuggestBox的工作方式與常規TextBox相似,唯一的好處是可以顯示一個面板/彈出式窗口基於您傳遞的ItemsSource的建議。 實際上,只有在ItemsSource是字符串集合的情況下它才有效,因為DisplayMemberPath不起作用,至少對我而言。 因此,檢索“ SelectedItem”的唯一方法應該使用Text屬性。 我知道這實際上並不相同,但是AutoSuggestBox並不是ComboBox。
XAML
xmlns:i="using:Microsoft.Xaml.Interactivity"
xmlns:core="using:Microsoft.Xaml.Interactions.Core"
<AutoSuggestBox
Text="{Binding EnteredAddress, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
ItemsSource="{Binding AddressAutoComplete}"
ItemTemplate="{StaticResource Autocomplete}"
TextMemberPath="name">
<i:Interaction.Behaviors>
<core:EventTriggerBehavior EventName="SuggestionChosen">
<core:InvokeCommandAction Command="{Binding TextSearchChangedCommand}" CommandParameter="{Binding this}">
</core:InvokeCommandAction>
</core:EventTriggerBehavior>
</i:Interaction.Behaviors>
ViewModel(棱鏡)
TextSearchChangedCommand = new DelegateCommand<Object>((Object) =>
{
method(Object);
});
public void method(Object adr)
{
AutoSuggestBoxSuggestionChosenEventArgs a = (AutoSuggestBoxSuggestionChosenEventArgs)adr;
Address selected = (Address)a.SelectedItem;
}
我花了一整天才意識到:-)
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