WPF ListBox中的ItemTemplate和ItemContainerStyle有什么区别? [英] What's the difference between ItemTemplate and ItemContainerStyle in a WPF ListBox?

问题描述

在WPF Listbox中，我对这两个概念感到困惑: ItemTemplate和ItemContainerStyle 有人可以向我解释更多吗?

In WPF Listbox, I'm confused with these 2 notions: ItemTemplate and ItemContainerStyle Can someone explain me more?

推荐答案

The ItemTemplate is for styling how the content of your data item appears. You use it to bind data fields, format display strings, and so forth. It determines how the data is presented.

ItemContainerStyle 用于设置数据项容器的样式.在列表框中，这将是一个ListBoxItem.此处的样式会影响选择行为或背景颜色.它确定显示器的样式和用户体验.

The ItemContainerStyle is for styling the container of the data item. In a list box, this would be a ListBoxItem. Styling here affects things like selection behavior or background color. It determines style and UX of the display.

上面链接的ItemContainerStyle的MSDN页面上有一个很好的示例，显示了一些区别:

The MSDN page for ItemContainerStyle, linked above, has a pretty good example showing some differences:

 <!--Use the ItemTemplate to set a DataTemplate to define
      the visualization of the data objects. This DataTemplate
      specifies that each data object appears with the Proriity
      and TaskName on top of a silver ellipse.-->
  <ItemsControl.ItemTemplate>
    <DataTemplate>
      <DataTemplate.Resources>
        <Style TargetType="TextBlock">
          <Setter Property="FontSize" Value="18"/>
          <Setter Property="HorizontalAlignment" Value="Center"/>
        </Style>
      </DataTemplate.Resources>
      <Grid>
        <Ellipse Fill="Silver"/>
        <StackPanel>
          <TextBlock Margin="3,3,3,0"
                     Text="{Binding Path=Priority}"/>
          <TextBlock Margin="3,0,3,7"
                     Text="{Binding Path=TaskName}"/>
        </StackPanel>
      </Grid>
    </DataTemplate>
  </ItemsControl.ItemTemplate>
  <!--Use the ItemContainerStyle property to specify the appearance
      of the element that contains the data. This ItemContainerStyle
      gives each item container a margin and a width. There is also
      a trigger that sets a tooltip that shows the description of
      the data object when the mouse hovers over the item container.-->
  <ItemsControl.ItemContainerStyle>
    <Style>
      <Setter Property="Control.Width" Value="100"/>
      <Setter Property="Control.Margin" Value="5"/>
      <Style.Triggers>
        <Trigger Property="Control.IsMouseOver" Value="True">
          <Setter Property="Control.ToolTip"
                  Value="{Binding RelativeSource={x:Static RelativeSource.Self},
                          Path=Content.Description}"/>
        </Trigger>
      </Style.Triggers>
    </Style>
  </ItemsControl.ItemContainerStyle>

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