用WPF实现多选下拉框

由于项目需要，自己设计的，大家可以看看，由于时间仓促，还不是十分完美，望多多包涵。

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Windows;

namespace WpfApplication1
{
    /// 

    /// App.xaml 的交互逻辑
    /// 

    public partial class App : Application
    {
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件        326  2011-10-27 08:30  Wpf_多选\WpfApplication1\App.xaml

     文件        311  2011-10-27 08:30  Wpf_多选\WpfApplication1\App.xaml.cs

     文件      13312  2011-10-27 13:15  Wpf_多选\WpfApplication1\bin\Debug\WpfApplication1.exe

     文件      34304  2011-10-27 13:15  Wpf_多选\WpfApplication1\bin\Debug\WpfApplication1.pdb

     文件      11600  2011-10-27 13:27  Wpf_多选\WpfApplication1\bin\Debug\WpfApplication1.vshost.exe

     文件        490  2010-03-17 22:39  Wpf_多选\WpfApplication1\bin\Debug\WpfApplication1.vshost.exe.manifest

     文件       1110  2011-10-27 12:48  Wpf_多选\WpfApplication1\MainWindow.xaml

     文件       5601  2011-10-27 13:18  Wpf_多选\WpfApplication1\MainWindow.xaml.cs

     文件       2230  2011-10-27 08:44  Wpf_多选\WpfApplication1\obj\x86\Debug\App.g.cs

     文件       2230  2011-10-27 13:27  Wpf_多选\WpfApplication1\obj\x86\Debug\App.g.i.cs

     文件      13681  2011-10-27 13:28  Wpf_多选\WpfApplication1\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache

     文件       6339  2011-10-27 13:31  Wpf_多选\WpfApplication1\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件        208  2011-10-27 08:44  Wpf_多选\WpfApplication1\obj\x86\Debug\GenerateResource.read.1.tlog

     文件        482  2011-10-27 08:44  Wpf_多选\WpfApplication1\obj\x86\Debug\GenerateResource.write.1.tlog

     文件       1294  2011-10-27 12:48  Wpf_多选\WpfApplication1\obj\x86\Debug\MainWindow.baml

     文件       4404  2011-10-27 12:48  Wpf_多选\WpfApplication1\obj\x86\Debug\MainWindow.g.cs

     文件       4404  2011-10-27 13:27  Wpf_多选\WpfApplication1\obj\x86\Debug\MainWindow.g.i.cs

     文件       4608  2011-10-27 08:30  Wpf_多选\WpfApplication1\obj\x86\Debug\TempPE\Properties.Resources.Designer.cs.dll

     文件       1694  2011-10-27 13:27  Wpf_多选\WpfApplication1\obj\x86\Debug\WpfApplication1.csproj.FileListAbsolute.txt

     文件      13312  2011-10-27 13:15  Wpf_多选\WpfApplication1\obj\x86\Debug\WpfApplication1.exe

     文件       1522  2011-10-27 12:48  Wpf_多选\WpfApplication1\obj\x86\Debug\WpfApplication1.g.resources

     文件      34304  2011-10-27 13:15  Wpf_多选\WpfApplication1\obj\x86\Debug\WpfApplication1.pdb

     文件        180  2011-10-27 08:44  Wpf_多选\WpfApplication1\obj\x86\Debug\WpfApplication1.Properties.Resources.resources

     文件        341  2011-10-27 13:15  Wpf_多选\WpfApplication1\obj\x86\Debug\WpfApplication1_MarkupCompile.cache

     文件        270  2011-10-27 13:31  Wpf_多选\WpfApplication1\obj\x86\Debug\WpfApplication1_MarkupCompile.i.cache

     文件       2219  2011-10-27 08:30  Wpf_多选\WpfApplication1\Properties\AssemblyInfo.cs

     文件       2880  2011-10-27 08:30  Wpf_多选\WpfApplication1\Properties\Resources.Designer.cs

     文件       5612  2011-10-27 08:30  Wpf_多选\WpfApplication1\Properties\Resources.resx

     文件       1100  2011-10-27 08:30  Wpf_多选\WpfApplication1\Properties\Settings.Designer.cs

     文件        201  2011-10-27 08:30  Wpf_多选\WpfApplication1\Properties\Settings.settings

............此处省略15个文件信息