自定义空间：listbox_listitem

<Window x:Class="MyWpfApplication.Window2"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Window2" Height="300" Width="500">
    <Window.Resources>
        <Style x:Key="SearchListBoxItemStyle"  TargetType="{x:Type ListBoxItem}">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate>
                        <Border  x:Name="myBorder"  Height="60" BorderBrush="#ddd9cd" BorderThickness="1 1 1 1" Padding="3">
                            <Grid>
                                <Grid.RowDefinitions>
                                    <RowDefinition />
                                    <RowDefinition />
                                </Grid.RowDefinitions>
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition/>
                                    <ColumnDefinition Width="50"/>
                                    <ColumnDefinition Width="20"/>
                                </Grid.ColumnDefinitions>
                                <TextBlock Grid.Row="0" Grid.Column="0" Text="{Binding Path=FileName}" Height="30" HorizontalAlignment="Left"/>
                                <TextBlock Grid.Row="0" Grid.Column="1" Text="{Binding Path=UploadStatus}" Height="30" HorizontalAlignment="Left"/>
                                <Image MouseLeftButtonDown="Image_MouseEnter" Grid.Row="0" Tag="{Binding}" Grid.Column="2" Source="Images/1.png" Height="16" Width="16" HorizontalAlignment="Right"/>
                                <ProgressBar Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="3" Value="{Binding Path=UploadValue}" Height="10"/>
                            </Grid>
                        </Border>

                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>

    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="*"></RowDefinition>
            <RowDefinition Height="*"></RowDefinition>
            <RowDefinition Height="6*"></RowDefinition>
        </Grid.RowDefinitions>
        <Button Grid.Row="0" Content="删除文件" Name="but_del" Click="but_del_Click" ></Button>
        <Button Grid.Row="1" Content="选择文件" Name="selectFile" Click="selectFile_Click"></Button>

        <ListBox Grid.Row="2" x:Name="ListBox1" ScrollViewer.VerticalScrollBarVisibility="Visible" HorizontalAlignment="Stretch"
                 ItemContainerStyle="{DynamicResource SearchListBoxItemStyle}" ScrollViewer.HorizontalScrollBarVisibility="Auto" />

    </Grid>

</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using Microsoft.Win32;

namespace MyWpfApplication {
    /// <summary>
    /// Window2.xaml 的交互逻辑
    /// </summary>
    public partial class Window2 : Window {

        List<TempUploadFile> lst = new List<TempUploadFile>();
        public Window2() {
            InitializeComponent();
        }

        public class TempUploadFile
        {
            public string FileName { get; set; }
            public string UploadStatus { get; set; }
            public double UploadValue { get; set; }
        }

        private void but_del_Click(object sender, RoutedEventArgs e)
        {
            if (lst.Count>0)
            {
                lst.RemoveRange(0, lst.Count);
                this.ListBox1.ItemsSource = null;
                this.ListBox1.ItemsSource = lst;
            }

        }

        private void selectFile_Click(object sender, RoutedEventArgs e)
        {
            System.Windows.Forms.OpenFileDialog openfiledialog = new System.Windows.Forms.OpenFileDialog();
             openfiledialog.Multiselect = true;
            if (openfiledialog.ShowDialog() == System.Windows.Forms.DialogResult.OK) {
                string[] filenames = openfiledialog.FileNames;
                foreach (string file in filenames)
                {
                    TempUploadFile a1 = new TempUploadFile
                    {
                        FileName = file,
                        UploadStatus = "正在上传",
                        UploadValue = 30d
                    };
                    lst.Add(a1);
                }
                this.ListBox1.ItemsSource = null;
                this.ListBox1.ItemsSource = lst;
            }
        }

        private void Image_MouseEnter(object sender, MouseButtonEventArgs e)
        {
            Image image = (Image)sender;

            lst.Remove((TempUploadFile)image.Tag); 

            this.ListBox1.ItemsSource = null;
            this.ListBox1.ItemsSource = lst;
        }

    }
}