Question

我想将AutomationProperties.Name绑定到包含在secondTextBox中的文本怎么做？仅使用没有代码的xaml。

的Xaml：

<Window x:Class="WpfApplication5.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApplication5"
        xmlns:converters="clr-namespace:WpfApplication5.Converters"
        mc:Ignorable="d"
        Title="TestWindow" Height="350" Width="525">
    <Window.Resources>
        <converters:StrangeConverter x:Key="CommonConverter"/>
    </Window.Resources>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition></RowDefinition>
            <RowDefinition></RowDefinition>
        </Grid.RowDefinitions>
        <Grid Grid.Row="0">
            <Grid.RowDefinitions>
                <RowDefinition></RowDefinition>
                <RowDefinition></RowDefinition>
            </Grid.RowDefinitions>
            <ComboBox Height="20" Width="100" ItemsSource="{Binding comboBoxItems}" AutomationProperties.AutomationId="ID_COMBO1">
                <ComboBox.ItemContainerStyle>
                    <Style>
                        <!--<Setter Property="AutomationProperties.Name" Value="{Binding UniqNumber}"/>-->
                        <Setter Property="AutomationProperties.Name" Value="{Binding Path=Text, ElementName=secondTextBox}"/>
                    </Style>
                </ComboBox.ItemContainerStyle>
                <ComboBox.ItemTemplate>
                    <DataTemplate>
                        <TextBlock x:Name="secondTextBox">
                            <Run Text="{Binding Name}"></Run>
                            <Run Text="-"></Run>
                            <Run Text="{Binding UniqNumber}"></Run>
                            <Run Text="{Binding .,Converter={StaticResource CommonConverter}}"></Run>
                        </TextBlock>
                    </DataTemplate>
                </ComboBox.ItemTemplate>
            </ComboBox>
        </Grid>
        <ComboBox Height="20" Width="100" ItemsSource="{Binding comboBoxItems}" AutomationProperties.AutomationId="ID_COMBO2"/>
        <Button Grid.Row="1"  Height="20" Width="100" Click="Button_Click"/>
    </Grid>
</Window>

转换器：

namespace WpfApplication5.Converters
{
    class StrangeConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return "Test";
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}

代码：

namespace WpfApplication5
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        ViewModel Vm = new ViewModel();
        public MainWindow()
        {
            InitializeComponent();
            DataContext = Vm;
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            var _calculatorAutomationElement = AutomationElement.RootElement.FindFirst(TreeScope.Children, new PropertyCondition(AutomationElement.NameProperty, "TestWindow"));
            var combobox = _calculatorAutomationElement.FindFirst(TreeScope.Subtree, new PropertyCondition(AutomationElement.AutomationIdProperty, "ID_COMBO1"));
            Vm.SelectComboboxItem(combobox, "02 - Basic Get");
            combobox = _calculatorAutomationElement.FindFirst(TreeScope.Subtree, new PropertyCondition(AutomationElement.AutomationIdProperty, "ID_COMBO2"));
            Vm.SelectComboboxItem(combobox, "01 - Basic Set");
        }
    }

    public class ViewModel
    {
        public List<Item> comboBoxItems { get; set; }

        public ViewModel()
        {
            comboBoxItems = new List<Item>();
            comboBoxItems.Add(new Item { Name = "Basic Get", UniqNumber = 1 });
            comboBoxItems.Add(new Item { Name = "Basic Set", UniqNumber = 2 });
            comboBoxItems.Add(new Item { Name = "Basic Report", UniqNumber = 3 });

        }

        public bool SelectComboboxItem(AutomationElement comboBox, string item)
        {
            (comboBox.GetCurrentPattern(ExpandCollapsePattern.Pattern) as ExpandCollapsePattern).Expand();
            PropertyCondition findCondition = new PropertyCondition(AutomationElement.NameProperty, item);
            var comboBoxItems = comboBox.FindFirst(TreeScope.Children, findCondition);
            if (comboBoxItems != null)
            {
                var selectionItemPattern = comboBoxItems.GetCurrentPattern(SelectionItemPattern.Pattern) as SelectionItemPattern;
                selectionItemPattern.Select();
                return true;
            }
            return false;
        }
    }

    public class Item
    {
        public string Name { get; set; }

        public int UniqNumber { get; set; }
    }
}

Answer 1

将Item课程更新为：

public class Item
{
    private string _TextToDisplay;
    public string Name { get; set; }

    public int UniqNumber { get; set; }

    public string TextToDisplay
    {
        get
        {
            _TextToDisplay  = Name + "-" + UniqNumber;  //Add other modification from converter
            return _TextToDisplay;               
        }
        set
        {
            _TextToDisplay = value;
        }
    }
}

将AutomationProperties.Name绑定到此属性

<TextBlock x:Name="secondTextBox" Text="{Binding TextToDisplay}" AutomationProperties.Name="{Binding TextToDisplay}">

Answer 2

这应该没有额外的视图模型属性且没有转换器：

<ComboBox.ItemContainerStyle>
    <Style TargetType="ComboBoxItem">
        <Setter Property="AutomationProperties.Name">
            <Setter.Value>
                <MultiBinding StringFormat="{}{0} - {1} Test">
                    <Binding Path="Name"/>
                    <Binding Path="UniqNumber"/>
                </MultiBinding>
            </Setter.Value>
        </Setter>
    </Style>
</ComboBox.ItemContainerStyle>
<ComboBox.ItemTemplate>
    <DataTemplate>
        <TextBlock>
            <TextBlock.Text>
                <MultiBinding StringFormat="{}{0} - {1} Test">
                    <Binding Path="Name"/>
                    <Binding Path="UniqNumber"/>
                </MultiBinding>
            </TextBlock.Text>
        </TextBlock>
    </DataTemplate>
</ComboBox.ItemTemplate>

将ItemContainerStyle中的属性绑定到ItemTemplate的DataTemplate中的TextBlock

2 个答案: