文件对话框WPF(5)----文件浏览对话框

废话就不多说了，开始。。。

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：

• 支撑Windows Shell命名空间对象，包含新的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）。
• 支撑WPF和Windows Forms的Windows 7资源管理器浏览器控件（Explorer Browser Control）。
• 支撑Shell的属性系统。
• 用于Windows 7任务栏Jumplists、Icon Overlay和Progress Bar的帮助程序。
• 支撑Windows Vista和Windows 7的通用文件对话框，并包含了自定义文件对话框控件。
• 支撑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：

<Window x:Class="WpfFileExploerDialog.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="148" Width="434" Background="#E609072F">
    <Grid Name="Grid1">
        <TextBox Height="25" Text = "{Binding Path=TextBoxValue}" HorizontalAlignment="Left" Margin="15,29,0,0" Name="textBoxFilePath" VerticalAlignment="Top" Width="347" />
        <Button Content="..." Click="ButtonFileSelect" Height="24" HorizontalAlignment="Left" Margin="377,30,0,0" Name="buttonFileDialog" VerticalAlignment="Top" Width="25" />
    </Grid>
</Window>

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
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    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;
            }
        }
    }
}

    每日一道理
如果说生命是一座庄严的城堡，如果说生命是一株苍茂的大树，如果说生命是一只飞翔的海鸟。那么，信念就是那穹顶的梁柱，就是那深扎的树根，就是那扇动的翅膀。没有信念，生命的动力便荡然无存；没有信念，生命的美丽便杳然西去。（划线处可以换其他词语）

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，例如上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
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    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;
            }
        }
    }
}

文章结束给大家分享下程序员的一些笑话语录：

看新闻说中国输入法全球第一！领先了又如何？西方文字根本不需要输入法。一点可比性都没有。

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文件和对话框
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