WPF 绑定列表框和 TabItem

发布于 2024-10-14 19:56:24 字数 951 浏览 5 评论 0原文

WPF 新手，我正在尝试做一些基本的事情（我认为！）。我有一个 TabControl 和一个 ListBox，显示打开的选项卡项：

<ListBox Width="170" Height="188" ItemsSource="{Binding Items, ElementName=tabControl}" Name="ListTabs" Canvas.Left="0" Canvas.Top="27">
            <ListBox.ItemContainerStyle>
                <Style TargetType="{x:Type ListBoxItem}" BasedOn="{StaticResource {x:Type ListBoxItem}}">
                    El
                </Style>
            </ListBox.ItemContainerStyle>
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding Header}"/>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>

是否可以绑定到特定的选项卡项（tabitem2 和 tabitem3）而不是整个选项卡控件？原因是第一个 tabitem1 是欢迎选项卡，我不希望它显示在列表框中。

更新：

有人愿意发布一些关于如何使用 IValueConverter 隐藏/过滤 tabitem 的代码吗？我已经搜索了几个小时但没有运气。非常非常感谢！

原文

New to WPF, am trying to do something basic (I think!). I have a TabControl and a ListBox that shows what tabitems are open:

<ListBox Width="170" Height="188" ItemsSource="{Binding Items, ElementName=tabControl}" Name="ListTabs" Canvas.Left="0" Canvas.Top="27">
            <ListBox.ItemContainerStyle>
                <Style TargetType="{x:Type ListBoxItem}" BasedOn="{StaticResource {x:Type ListBoxItem}}">
                    El
                </Style>
            </ListBox.ItemContainerStyle>
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding Header}"/>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>

Is it possible to bind to specific tabitems (tabitem2 and tabitem3) rather than the whole tabcontrol? Reason being is the first tabitem1 is a welcome tab and I don't want it to be shown in the listbox.

UPDATE:

Would someone be so kind to post some code on how to use an IValueConverter to hide/filter a tabitem? I have been searching for hours with no luck. Many many thanks!

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

爱你是孤单的心事 2024-10-21 19:56:24

在您当前的设置中，唯一的方法是通过 IValueConverter。

    <Window.Resources>
        <converters:StripOutFirstTabConverter x:Key="StripOutFirstTabConverter"/>
    </Window.Resources>

    <ListBox Width="170" Height="188" ItemsSource="{Binding Items, ElementName=tabControl, Converter={StaticResource StripOutFirstTabConverter}}" Name="ListTabs" Canvas.Left="0" Canvas.Top="27">
            <ListBox.ItemContainerStyle>
                <Style TargetType="{x:Type ListBoxItem}" BasedOn="{StaticResource {x:Type ListBoxItem}}">
                    El
                </Style>
            </ListBox.ItemContainerStyle>
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding Header}"/>
                </DataTemplate>
            </ListBox.ItemTemplate>
     </ListBox>

如果您愿意修改您的方法，您可以将 ListBox.ItemsSource 绑定到 ICollectionView，然后使用 Filter 属性。

public ICollectionView Tabs
{
    get 
    {
        if (_view == null)
        {
            _view = CollectionViewSource.GetDefaultView(tabControl.Items);
            _view.Filter = Filter;
        }

        return _view;
    }
}

private bool Filter(object arg)
{
    //arg will be a TabItem, return true if you want it, false if you don't
}

In your current set up the only way would be to run it through an IValueConverter.

    <Window.Resources>
        <converters:StripOutFirstTabConverter x:Key="StripOutFirstTabConverter"/>
    </Window.Resources>

    <ListBox Width="170" Height="188" ItemsSource="{Binding Items, ElementName=tabControl, Converter={StaticResource StripOutFirstTabConverter}}" Name="ListTabs" Canvas.Left="0" Canvas.Top="27">
            <ListBox.ItemContainerStyle>
                <Style TargetType="{x:Type ListBoxItem}" BasedOn="{StaticResource {x:Type ListBoxItem}}">
                    El
                </Style>
            </ListBox.ItemContainerStyle>
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding Header}"/>
                </DataTemplate>
            </ListBox.ItemTemplate>
     </ListBox>

If you were willing to modify your approach you could bind the ListBox.ItemsSource to a ICollectionView and then make use of the Filter property.

public ICollectionView Tabs
{
    get 
    {
        if (_view == null)
        {
            _view = CollectionViewSource.GetDefaultView(tabControl.Items);
            _view.Filter = Filter;
        }

        return _view;
    }
}

private bool Filter(object arg)
{
    //arg will be a TabItem, return true if you want it, false if you don't
}

回复收藏 0 原文