在C#.NET windows应用程序做视频播放，首先要用到com组件中windows media player，当然你也可以用其它的，这里就以windows media player为例。
一、新建windows应用程序项目，添加vedioForm窗体
二、在com组件中找到windows media player，添加引用
三、代码如下：
public partial class VedioForm : Form
{
private AxWMPLib.AxWindowsMediaPlayer axWindowsMediaPlayer1;
public VedioForm()
{
InitializeComponent();
InitVedio();
}
private void VedioForm_Load(object sender, EventArgs e)
{
InitVedioUrl();
InitEvent();
}
//初始化播放控件
private void InitVedio()
{
this.axWindowsMediaPlayer1 = new AxWMPLib.AxWindowsMediaPlayer();
this.axWindowsMediaPlayer1.Enabled = true;
this.axWindowsMediaPlayer1.Location = new System.Drawing.Point(0, 400);
this.axWindowsMediaPlayer1.Name = "axWindowsMediaPlayer1";
this.axWindowsMediaPlayer1.Size = new System.Drawing.Size(800, 500);
this.axWindowsMediaPlayer1.TabIndex = 2;
this.Controls.Add(this.axWindowsMediaPlayer1);
}
//初始化播放控件的视频文件地址
protected void InitVedioUrl()
{
this.axWindowsMediaPlayer1.URL = @"D:/Vedio/default.wmv";
}
protected void InitEvent()
{
axWindowsMediaPlayer1.StatusChange += new EventHandler(axWindowsMediaPlayer1_StatusChange);
}
//通过控件的状态改变，来实现视频循环播放
protected void axWindowsMediaPlayer1_StatusChange(object sender, EventArgs e)
{
/* 0 Undefined Windows Media Player is in an undefined state.(未定义)
1 Stopped Playback of the current media item is stopped.(停止)
2 Paused Playback of the current media item is paused. When a media item is paused, resuming playback begins from the same location.(停留)
3 Playing The current media item is playing.(播放)
4 ScanForward The current media item is fast forwarding.
5 ScanReverse The current media item is fast rewinding.
6 Buffering The current media item is getting additional data from the server.(转换)
7 Waiting Connection is established, but the server is not sending data. Waiting for session to begin.(暂停)
8 MediaEnded Media item has completed playback. (播放结束)
9 Transitioning Preparing new media item.
10 Ready Ready to begin playing.(准备就绪)
11 Reconnecting Reconnecting to stream.(重新连接)
*/
//判断视频是否已停止播放
if ((int)axWindowsMediaPlayer1.playState == 1)
{
//停顿2秒钟再重新播放
System.Threading.Thread.Sleep(2000);
//重新播放
axWindowsMediaPlayer1.Ctlcontrols.play();
}
}
}
四、OK 了，执行看效果。
以上代码只是实现了单个视频文件循环播放的效果，当然还可以播放一个视频列表，这里就不再赘叙。
以下是关于windows media player的控件详细说明：
[基本属性]
URL:string 可以指定媒体位置
enableContextMenu:Boolean 显示/不显示播放位置的右键菜单
fullScreen:boolean 全屏显示
stretchToFit:boolean 非全屏状态时是否伸展到最佳大小
uMode:string 播放器的模式，full：有下面的控制条; none：只有播放部份没有控制条
playState:integer 当前控件状态，状态变化时会触发OnStatusChange事件
[controls]
可通过WindowsMediaPlayer.controls对播放器进行控制并取得相关的一些信息：
controls.play; 播放
controls.stop; 停止
controls.pause; 暂停
controls.currentPosition：Double 当前播放进度
controls.currentPositionString：string 时间格式的字符串 “0:32″
[currentMedia]
可以通过WindowsMediaPlayer.currentMedia取得当前媒体的信息
currentMedia.duration Double 总长度
currentMedia.durationString 时间格式的字符串 “4:34″
[settings]
可以通过WindowsMediaPlayer.settings对播放器进行设置，包括音量和声道等。
settings.volume:integer 音量 （0-100）
settings.balance:integer 声道，通过它应该可以进行立体声、左声道、右声道的控制。
Media Player Player.playState获取播放状态事件
Value State Description
0 Undefined Windows Media Player is in an undefined state.(未定义)
1 Stopped Playback of the current media item is stopped.(停止)
2 Paused Playback of the current media item is paused. When a media item is paused, resuming playback begins from the same location.(停留)
3 Playing The current media item is playing.(播放)
4 ScanForward The current media item is fast forwarding.
5 ScanReverse The current media item is fast rewinding.
6 Buffering The current media item is getting additional data from the server.(转换)
7 Waiting Connection is established, but the server is not sending data. Waiting for session to begin.(暂停)
8 MediaEnded Media item has completed playback. (播放结束)
9 Transitioning Preparing new media item.
10 Ready Ready to begin playing.(准备就绪)
11 Reconnecting Reconnecting to stream.(重新连接)
原文：
http://blog.csdn.net/slimboy123/archive/2010/06/23/5688616.aspx