编号列表框 [英] Numbered listbox

问题描述

我有一个排序列表框，需要显示每个项目的行数。在这个演示中，我有一个名称字符串属性Person类。目录表显示按名称排序的人士的名单。我怎么可以添加到列表框的DataTemplate中的行数???

XAML：

＆LT;窗​​口x：类=NumberedListBox.Window1
    的xmlns =htt​​p://schemas.microsoft.com/winfx/2006/xaml/$p$psentation
    的xmlns：X =htt​​p://schemas.microsoft.com/winfx/2006/xaml
    HEIGHT =300WIDTH =300＆GT;
    ＆LT;列表框
        的ItemsSource ={绑定路径= PersonsListCollectionView}
        Horizo​​ntalContentAlignment =拉伸＆GT;
        ＆LT; ListBox.ItemTemplate＆GT;
            ＆LT;＆DataTemplate的GT;
                ＆LT; TextBlock的文本={绑定路径=名称}/＆GT;
            ＆LT; / DataTemplate中＆GT;
        ＆LT; /ListBox.ItemTemplate>
    ＆LT; /列表框＆GT;
＆LT; /窗GT;


背后code：

 使用系统;
使用System.Collections.ObjectModel;
使用System.Windows.Data;
使用System.Windows;
使用System.ComponentModel;命名空间NumberedListBox
{
    公共部分类窗口1：窗口
    {
        公共窗口1（）
        {
            的InitializeComponent（）;            人=新的ObservableCollection＆LT;＆人GT;（）;
            Persons.Add（新的Person（）{名称=莎莉}）;
            Persons.Add（新的Person（）{名称=鲍勃}）;
            Persons.Add（新的Person（）{名称=乔}）;
            Persons.Add（新的Person（）{名称=玛丽}）;            PersonsListCollectionView =新的ListCollectionView（人）;
            PersonsListCollectionView.SortDescriptions.Add（新SortDescription（名，ListSortDirection.Ascending））;            的DataContext =这一点;
        }        公众的ObservableCollection＆LT;＆人GT;人{搞定;私人集; }
        公众的ListCollectionView PersonsListCollectionView {搞定;私人集; }
    }    公共类Person
    {
        公共字符串名称{;组; }
    }
}
 

解决方案

这应该让你开始：

<一个href=\"http://weblogs.asp.net/h$p$pishuber/archive/2008/11/18/rownumber-in-silverlight-datagrid-or-listbox.aspx\" rel=\"nofollow\">http://weblogs.asp.net/h$p$pishuber/archive/2008/11/18/rownumber-in-silverlight-datagrid-or-listbox.aspx

它说，它是Silverlight的，但我不明白为什么它不会为WPF工作。基本上，你一个TextBlock绑定到你的数据和使用自定义值转换器输出当前项目的数量。

I have a sorted listbox and need to display each item's row number. In this demo I have a Person class with a Name string property. The listbox displays a a list of Persons sorted by Name. How can I add to the datatemplate of the listbox the row number???

XAML:

<Window x:Class="NumberedListBox.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Height="300" Width="300">
    <ListBox 
        ItemsSource="{Binding Path=PersonsListCollectionView}" 
        HorizontalContentAlignment="Stretch">
        <ListBox.ItemTemplate>
            <DataTemplate>
                <TextBlock Text="{Binding Path=Name}" />
            </DataTemplate>
        </ListBox.ItemTemplate>
    </ListBox>
</Window>

Code behind:

using System;
using System.Collections.ObjectModel;
using System.Windows.Data;
using System.Windows;
using System.ComponentModel;

namespace NumberedListBox
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();

            Persons = new ObservableCollection<Person>();
            Persons.Add(new Person() { Name = "Sally"});
            Persons.Add(new Person() { Name = "Bob" });
            Persons.Add(new Person() { Name = "Joe" });
            Persons.Add(new Person() { Name = "Mary" });

            PersonsListCollectionView = new ListCollectionView(Persons);
            PersonsListCollectionView.SortDescriptions.Add(new SortDescription("Name", ListSortDirection.Ascending));

            DataContext = this;
        }

        public ObservableCollection<Person> Persons { get; private set; }
        public ListCollectionView PersonsListCollectionView { get; private set; }
    }

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

解决方案

This should get you started:

http://weblogs.asp.net/hpreishuber/archive/2008/11/18/rownumber-in-silverlight-datagrid-or-listbox.aspx

It says it's for Silverlight, but I don't see why it wouldn't work for WPF. Basically, you bind a TextBlock to your data and use a custom value converter to output the current item's number.

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