WPF(5)----文件浏览对话框

WPF中文件浏览对话框的实现可以利用Windows API Code Pack，它是一个用于访问Windows Vista/7 特性的托管代码函数库，但并没有包含在.NET 4.0中。

该代码包的特性如下所示：

• 支持Windows Shell命名空间对象，包括新的Windows 7资源库（Libraries）、固定名称文件夹和非文件系统容器。
• Windows Vista和Windows 7任务对话框（Task Dialogs）。
• 支持WPF和Windows Forms的Windows 7资源管理器浏览器控件（Explorer Browser Control）。
• 支持Shell的属性系统。
• 用于Windows 7任务栏Jumplists、Icon Overlay和Progress Bar的帮助程序。
• 支持Windows Vista和Windows 7的通用文件对话框，并包括了自定义文件对话框控件。
• 支持Direct3D 11.0和DXGI 1.0/1.1的API。
• 传感器平台（Sensor Platform）API
• 扩展的语言服务（Extended Linguistic Services）API。

1：代码包下载之后，解压，将其中的Microsoft.WindowsAPICodePack.dll 和Microsoft.WindowsAPICodePack.Shell.dll拷贝至工程中。然后Reference-->Add将其添加至Project中的References。

2：代码编写时，将其导入命名空间：

using Microsoft.WindowsAPICodePack.Shell;
using Microsoft.WindowsAPICodePack.Dialogs;

3：前台xmal代码如下：

4：后台xmal.cs代码如下：

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.Navigation;
using System.Windows.Shapes;

using System.ComponentModel;  
using Microsoft.WindowsAPICodePack.Shell;
using Microsoft.WindowsAPICodePack.Dialogs;

namespace WpfFileExploerDialog
{
    /// 

    /// Interaction logic for MainWindow.xaml
    /// 
    public partial class MainWindow : Window, INotifyPropertyChanged  
    {
        public MainWindow()
        {
            InitializeComponent();
            Grid1.DataContext = this; 
        }


        public event PropertyChangedEventHandler PropertyChanged;

        protected void NotifyPropertyChanged(string property)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(property));
            }
        }

        private string _Value2;

        public string TextBoxValue
        {
            get { return _Value2; }
            set
            {
                if (value != _Value2)
                {
                    _Value2 = value;
                    NotifyPropertyChanged("TextBoxValue");
                }
            }
        }  

        private void ButtonFileSelect(object sender, RoutedEventArgs e)
        {
            ShellContainer selectedFolder = null;
            selectedFolder = KnownFolders.Computer as ShellContainer;
            CommonOpenFileDialog commonOpenFileDialog = new CommonOpenFileDialog();
            commonOpenFileDialog.InitialDirectoryShellContainer = selectedFolder;
            commonOpenFileDialog.EnsureReadOnly = true;


            if (commonOpenFileDialog.ShowDialog() == CommonFileDialogResult.Ok)
            {
                TextBoxValue = commonOpenFileDialog.FileName;
            }
        }
    }
}

5：程序运行结果如下：

另外，还可以将文件浏览窗口直接定位到固定的文件夹，并且添加想要的文件过滤器，例如下面的代码就是将其定位到SampleVideos文件夹：

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.Navigation;
using System.Windows.Shapes;

using System.ComponentModel;  
using Microsoft.WindowsAPICodePack.Shell;
using Microsoft.WindowsAPICodePack.Dialogs;

namespace WpfFileExploerDialog
{
    /// 

    /// Interaction logic for MainWindow.xaml
    /// 
    public partial class MainWindow : Window, INotifyPropertyChanged  
    {
        public MainWindow()
        {
            InitializeComponent();
            Grid1.DataContext = this; 
        }


        public event PropertyChangedEventHandler PropertyChanged;

        protected void NotifyPropertyChanged(string property)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(property));
            }
        }

        private string _Value2;

        public string TextBoxValue
        {
            get { return _Value2; }
            set
            {
                if (value != _Value2)
                {
                    _Value2 = value;
                    NotifyPropertyChanged("TextBoxValue");
                }
            }
        }  

        private void ButtonFileSelect(object sender, RoutedEventArgs e)
        {
            ShellContainer selectedFolder = null;

            //文件夹定位至SampleVideos
            selectedFolder = KnownFolders.SampleVideos as ShellContainer;
            CommonOpenFileDialog commonOpenFileDialog = new CommonOpenFileDialog();
            commonOpenFileDialog.InitialDirectoryShellContainer = selectedFolder;
            commonOpenFileDialog.EnsureReadOnly = true;

            //设置文件过滤
            commonOpenFileDialog.Filters.Add(new CommonFileDialogFilter("WMV Files", "*.wmv"));
            commonOpenFileDialog.Filters.Add(new CommonFileDialogFilter("AVI Files", "*.avi"));
            commonOpenFileDialog.Filters.Add(new CommonFileDialogFilter("MP3 Files", "*.mp3"));
            commonOpenFileDialog.Filters.Add(new CommonFileDialogFilter("MKV Files", "*.mkv"));

            if (commonOpenFileDialog.ShowDialog() == CommonFileDialogResult.Ok)
            {
                TextBoxValue = commonOpenFileDialog.FileName;
            }
        }
    }
}