WPF 列表框空数据模板 [英] WPF listbox empty datatemplate

问题描述

我想知道人们如何处理没有项目的 ListBox 控件?例如我想绑定一个搜索结果列表，但如果没有找到结果，我想显示未找到结果".

I was wondering how people handle a ListBox control that has no items? e.g. I want to bind a list of search results but if no results are found i would like to display "No results found".

我目前解决此问题的方法是，如果结果集计数 = 0，我将隐藏列表框并显示带有未找到结果"消息的标签.理想情况下，我想要 ASP .NET datagrid EmptyTemplate 解决方案.

The way i currently tackle this is that i hide the listbox if the result set count = 0 and show a label with the "No results found" message. Ideally i would like something like the ASP .NET datagrid EmptyTemplate solution.

干杯

推荐答案

我已经用这段代码取得了一些成功:

I've had some success with this code:

<Style TargetType="ListBox" x:Key="ListStyle" BasedOn="{StaticResource {x:Type ListBox}}">
    <Style.Triggers>
        <DataTrigger 
            Binding="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=Items.Count}" 
            Value="0"
            >
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate>
                        <TextBlock>No items to display</TextBlock>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </DataTrigger>
    </Style.Triggers>
</Style>

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