软件概览：
区域组成：一个MediaElement控件+一个ListView控件+一个TextBlock控件+一个Slider控件+若干button控件
功能介绍：
1、视频区
用于播放列表中的视频内容
2、控制区
包含播放(暂停)、停止、快进、快退、音量；返回按钮为关闭此窗体
3、播放列表
显示所要播放的视频列表，列表中的内容位于一个盘符目录中，向此目录添加视频时，启动此程序，列表将显示此目录下的所有视频，程序已设为播放列表循环播放(非单个循环)。
代码如下：
Xaml：
<Window x:Class="泗阳行政服务中心.VentureNewsWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="VentureNewsWindow" Height="1138" Width="2000" WindowStartupLocation="CenterScreen" WindowState="Maximized" WindowStyle="None" Loaded="Window_Loaded" ShowInTaskbar="False" Background="#FF2C2C31">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="418*" />
<ColumnDefinition Width="72*" />
<ColumnDefinition Width="83*" />
<ColumnDefinition Width="72*" />
<ColumnDefinition Width="80*" />
<ColumnDefinition Width="72*" />
<ColumnDefinition Width="68*" />
<ColumnDefinition Width="73*" />
<ColumnDefinition Width="85*" />
<ColumnDefinition Width="60*" />
<ColumnDefinition Width="604*" />
<ColumnDefinition Width="18*" />
<ColumnDefinition Width="163*" />
<ColumnDefinition Width="110*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="15*" />
<RowDefinition Height="44*" />
<RowDefinition Height="990*" />
<RowDefinition Height="7*" />
<RowDefinition Height="37*" />
<RowDefinition Height="4*" />
<RowDefinition Height="2*" />
</Grid.RowDefinitions>
<!-- Background="#FF2C2C31" Foreground="#FF9AE500" -->
<ListView Margin="1,0,0,0" Name="listView1" SelectionMode="Single" IsSynchronizedWithCurrentItem="{x:Null}" SelectionChanged="listView1_SelectionChanged" Grid.Row="2" Grid.ColumnSpan="3" Grid.Column="11" Background="#FF2C2C31" Foreground="#FF9AE500" FontSize="20" />
<Button Content="返 回" Grid.Column="11" Grid.Row="3" Margin="1,0,0,1" Name="button1" FontSize="32" Foreground="#FF9AE500" Background="{x:Null}" Grid.ColumnSpan="3" Click="button1_Click" Cursor="Hand" Grid.RowSpan="2" />
<MediaElement Volume="{Binding ElementName=volumeSlider, Path=Value}" Grid.RowSpan="3" Name="mediaElement1" Margin="0,0,5,0" MediaEnded="mediaElement1_MediaEnded" Grid.ColumnSpan="11" />
<Slider x:Name="volumeSlider" Minimum="0" Maximum="1" Value="0.5" Margin="1,11,430,12" Grid.Row="4" Grid.Column="10" />
<TextBlock Grid.Row="4" Margin="4,7,4,5" Name="textBlock1" Text="音量:" Foreground="#FF9AE500" FontSize="20" Grid.Column="9" />
<Button Background="{x:Null}" Content="播 放" Cursor="Hand" FontSize="20" Foreground="#FF9AE500" Margin="2,1,0,1" Name="button3" Grid.Row="4" Click="button3_Click_1" Grid.Column="1" />
<Button Background="{x:Null}" Content="停 止" Cursor="Hand" FontSize="20" Foreground="#FF9AE500" Margin="2,1,0,1" Name="button4" Grid.Row="4" Click="button4_Click" Grid.Column="3" />
<Button Background="{x:Null}" Content="快 进" Cursor="Hand" FontSize="20" Foreground="#FF9AE500" Margin="2,1,0,0" Name="button5" Grid.Row="4" Click="button5_Click" Grid.Column="5" />
<Button Background="{x:Null}" Content="快 退" Cursor="Hand" FontSize="20" Foreground="#FF9AE500" Margin="1,1,2,1" Name="button6" Grid.Row="4" Click="button6_Click" Grid.Column="7" />
<Button Background="{x:Null}" Content="播放列表" Cursor="Hand" FontSize="32" Foreground="#FF9AE500" Margin="0,1,1,0" Name="button2" Grid.Column="11" Grid.ColumnSpan="3" Grid.Row="1" />
</Grid>
</Window>
cs：
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 System.IO;
namespace 泗阳行政服务中心
{
/// <summary>
/// VentureNewsWindow.xaml 的交互逻辑
/// </summary>
public partial class VentureNewsWindow : Window
{
string root = "", pathMedia = "";
public VentureNewsWindow()
{
InitializeComponent();
InitPath();
AddItemToListView();
}
//获取视频目录
private void InitPath()
{
ApplicationPath ap = new ApplicationPath();
root = ap.GetRtfPath("root");
pathMedia = root + ap.GetRtfPath("pathMedia");
}
//将视频目录下的视频名称添加到ListView中
private void AddItemToListView()
{
string[] files = Directory.GetFiles(pathMedia);
foreach (string file in files)
{
this.listView1.Items.Add(file.Substring(file.LastIndexOf('\\') + 1));
}
}
//窗体加载时调用视频，进行播放
private void Window_Loaded(object sender, RoutedEventArgs e)
{
MediaElementControl();
}
//存储播放列表中视频的名称
List<string> fileNames = new List<string>();
private void MediaElementControl()
{
this.mediaElement1.LoadedBehavior = MediaState.Manual;
string[] files = Directory.GetFiles(pathMedia);
foreach(string file in files)
{
fileNames.Add(file.Substring(file.LastIndexOf('\\') + 1));
}
this.mediaElement1.Source = new Uri(files[0]);
this.mediaElement1.Play();
}
//视频播放结束事件
private void mediaElement1_MediaEnded(object sender, RoutedEventArgs e)
{
//获取当前播放视频的名称（格式为：xxx.wmv）
string path = this.mediaElement1.Source.LocalPath;
string currentfileName = path.Substring(path.LastIndexOf('\\') + 1);
//对比名称列表，如果相同，则播放下一个，如果播放的是最后一个，则从第一个重新开始播放
for (int i = 0; i < fileNames.Count;i++ )
{
if (currentfileName == fileNames[i])
{
if (i == fileNames.Count - 1)
{
this.mediaElement1.Source = new Uri(pathMedia + "//" + fileNames[0]);
this.mediaElement1.Play();
}
else
{
this.mediaElement1.Source = new Uri(pathMedia + "//" + fileNames[i + 1]);
this.mediaElement1.Play();
}
break;
}
}
}
//播放列表选择时播放对应视频
private void listView1_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
string fileName = this.listView1.SelectedValue.ToString();
this.mediaElement1.Source = new Uri(pathMedia + "//" + fileName);
this.mediaElement1.Play();
}
//返回按钮
private void button1_Click(object sender, RoutedEventArgs e)
{
this.Close();
}
private void button3_Click(object sender, RoutedEventArgs e)
{
this.mediaElement1.Position = this.mediaElement1.Position + TimeSpan.FromSeconds(20);
}
//播放、暂停按钮
private void button3_Click_1(object sender, RoutedEventArgs e)
{
if (button3.Content.ToString() == "播 放")
{
mediaElement1.Play();
button3.Content = "暂 停";
mediaElement1.ToolTip = "Click to Pause";
}
else
{
mediaElement1.Pause();
button3.Content = "播 放";
mediaElement1.ToolTip = "Click to Play";
}
}
//停止播放视频
private void button4_Click(object sender, RoutedEventArgs e)
{
this.mediaElement1.Stop();
}
//快进
private void button5_Click(object sender, RoutedEventArgs e)
{
mediaElement1.Position = mediaElement1.Position + TimeSpan.FromSeconds(10);
}
//快退
private void button6_Click(object sender, RoutedEventArgs e)
{
mediaElement1.Position = mediaElement1.Position - TimeSpan.FromSeconds(10);
}
}
}
上面的cs代码中所用的ApplicationPath类代码如下：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
namespace 泗阳行政服务中心
{
class ApplicationPath
{
private readonly static string ImagePath = Environment.CurrentDirectory + "\\image\\";
private readonly static string RtfPath = Environment.CurrentDirectory + "\\rtf\\";
XmlDocument xDoc = new XmlDocument();
public ApplicationPath()
{
xDoc.Load(getAppConfigPath());
}
public static string getImagePath()
{
return ImagePath;
}
public static string getRtfPath()
{
return RtfPath;
}
public string getAppConfigPath()
{
return Environment.CurrentDirectory + "\\App.config";
}
//获取App.config值
public string GetRtfPath(string appKey)
{
try
{
XmlNode xNode;
XmlElement xElem;
xNode = xDoc.SelectSingleNode("//appSettings");
xElem = (XmlElement)xNode.SelectSingleNode("//add[@key='" + appKey + "']");
if (xElem != null)
{
return xElem.GetAttribute("value");
}
else
return "";
}
catch (Exception)
{
return "";
}
}
}
}
上面代码中的App.config文件位于项目的/bin/Debug下，内容格式为：
<?xml version="1.0" encoding="utf-8"?> <configuration> <appSettings> <add key="root" value="D:\泗阳行政服务中心文档\" /> <add key="pathMedia" value="平时状态\创业新闻\" /> </appSettings> </configuration>
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