本文介绍了如何获取当前ItemsControl项目的索引?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

有没有办法在 WPF 中获取当前 ItemsControl 项目的索引?

Is there any way to get the index of the current ItemsControl item in WPF?

例如,我想做一些例如:

For example, I want to do something like:

<ItemsControl>
    <ItemsControl.ItemTemplate>
        <DataTemplate>
            <TextBox Text="{Binding current_index}">
            </TextBox>
        </DataTemplate>
    </ItemsControl.ItemTemplate>
</ItemsControl>

所以之后,第一个 TextBox 将显示文本0,第二个1,第三个2

so that after this, the first TextBox will show text "0", second "1", third "2" ....

推荐答案

我会建议看看:

它解释了如何解决ItemsControl上没有内置的Index属性的事实。

It explains how to work around the fact that there isn't a built in Index property on the ItemsControl.

编辑:

我尝试了以下代码:

<Window.Resources>
    <x:Array Type="{x:Type sys:String}" x:Key="MyArray">
        <sys:String>One</sys:String>
        <sys:String>Two</sys:String>
        <sys:String>Three</sys:String>
    </x:Array>
</Window.Resources>
<ItemsControl ItemsSource="{StaticResource MyArray}" AlternationCount="100" >
    <ItemsControl.ItemTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding Path=(ItemsControl.AlternationIndex),
                RelativeSource={RelativeSource TemplatedParent},
                StringFormat={}Index is {0}}">
            </TextBlock>
        </DataTemplate>
    </ItemsControl.ItemTemplate>
</ItemsControl >

TextBlocks如:

And get a window with three TextBlocks like:

[Index is 0]
[Index is 1]
[Index is 2]

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08-24 18:13
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