37

我正在尝试AutomationProperties.Name在控件模板中设置控件的属性,GroupStyle但它似乎什么也没产生。我Expander在我的模板中设置了它,但即使我只是输入一些没有绑定的文本,它什么也没说。我还尝试在 the 上放置一个二传手GroupItem,但这也没有用。我有点不知所措。我希望组项目上的属性能够解决它。

XAML:

<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        x:Class="WpfApplication8.MainWindow"
        x:Name="win"
        Title="MainWindow"
        Width="640"
        Height="480">

  <Grid x:Name="LayoutRoot">
    <ListBox x:Name="lstbx"
             Margin="71,45,99,78"
             ItemsSource="{Binding ElementName=win,
                                       Path=Samples}">
      <ListBox.GroupStyle>
        <GroupStyle>
          <GroupStyle.ContainerStyle>
            <Style TargetType="{x:Type GroupItem}">
              <Setter Property="AutomationProperties.Name"
                      Value="this is a test" />
              <Setter Property="KeyboardNavigation.TabNavigation"
                      Value="Cycle" />
              <Setter Property="Template">
                <Setter.Value>
                  <ControlTemplate TargetType="{x:Type GroupItem}">
                    <Expander Name="templateLstBxExpander"
                              AutomationProperties.Name="test test test"
                              IsExpanded="True">

                      <Expander.Header>
                        <StackPanel Orientation="Horizontal">
                          <Label Name="templateLstBxExpanderHeader"
                                 Content="{Binding Path=Name}"
                                 FontWeight="Bold" />
                        </StackPanel>
                      </Expander.Header>
                      <ItemsPresenter />
                    </Expander>
                  </ControlTemplate>
                </Setter.Value>
              </Setter>
            </Style>
          </GroupStyle.ContainerStyle>
        </GroupStyle>
      </ListBox.GroupStyle>
    </ListBox>
  </Grid>
</Window>

XAML.cs:

using System;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.Collections.Generic;
using System.Collections.ObjectModel;
namespace WpfApplication8
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
    public static readonly DependencyProperty sampleProperty = DependencyProperty.Register(
        "Samples", typeof(ObservableCollection<sample>), typeof(MainWindow), new PropertyMetadata(new ObservableCollection<sample>()));

    public ObservableCollection<sample> Samples
    {
        get
        {
            return (ObservableCollection<sample>)this.GetValue(sampleProperty);
        }

        set
        {
            this.SetValue(sampleProperty, value);
        }
    }      

    public MainWindow()
    {
        this.InitializeComponent();

         CollectionView view = (CollectionView)CollectionViewSource.GetDefaultView(lstbx.ItemsSource);
        PropertyGroupDescription groupDescription = new PropertyGroupDescription("Location");
        view.GroupDescriptions.Add(groupDescription);      
        sample test = new sample();
        test.Location = "one";
        test.Name = "blah blah";
        Samples.Add(test);
        sample test2 = new sample();
        test2.Location = "two";
        test2.Name = "ya ya";
        Samples.Add(test2);

    }
}
}

示例.cs:

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace WpfApplication8
{
public class sample
{


    public string Name { set; get; }
    public string Location{ set; get; }

}
4

3 回答 3

1

问题实际上是关于屏幕阅读器应该如何达到该值。Groupitems 可以通过 MSAA 从光标访问,但不能通过 UIA。UIA 是用于 WPF 中可访问性的主要 API。

UIA 和 WPF 的核心问题是,当试图读取通过光标找到的控件时(其他方式是焦点和插入符号),通常会返回主窗口。

作为我自己的屏幕阅读器开发人员,处理此问题的最佳方法是同时使用 MSAA 和 UIA。如果 UIA 没有返回任何有价值的信息,则回退到使用 MSAA。

于 2018-05-01T16:30:36.877 回答
0

尝试AutomationProperties.HelpText与 一起设置Name

于 2016-05-13T19:30:58.363 回答
-2

您可以使用DisplayMemberPath="Name"

    <ListBox x:Name="lstbx" Margin="71,45,99,78" ItemsSource="{Binding ElementName=win, Path=Samples}" DisplayMemberPath="Name" >

在此处输入图像描述

或者您可以使用.ToString()

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

    public string Location { set; get; }

    public override string ToString()
    {
        return Name;
    }
}
于 2016-02-04T04:43:55.963 回答