winform播放视频（windows media player）
1.找到windows media player
工具箱常规下边右键，右键弹窗点击“选择项”，选择工具箱窗口点击“COM组件”，找到 Windows Media Player 勾选，点击确定
2.使用windows media player
直接将windows media player控件拖动到窗体上，
3.属性
（1）fullScreen：满屏
（2）enableContextMenu:是否显示右键菜单
（3）stretchToFit ：非全屏状态时是否伸展到最佳大小
（4）uMode: 播放器的模式，full：有下面的控制区（开始，暂停等）; none：去掉控制区
（5）playState 当前控件状态，状态变化时会触发OnStatusChange事件
{
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)
}
(6)Ctlcontrols 可通过WindowsMediaPlayer.controls对播放器进行控制并取得相关的一些信息：
Ctlcontrols .play; 播放
Ctlcontrols .stop; 停止
Ctlcontrols .pause; 暂停
Ctlcontrols .next; 下一曲
Ctlcontrols .previous; 上一曲
Ctlcontrols .currentPosition：Double 当前播放进度
Ctlcontrols .currentPositionString：string 时间格式的字符串 “0:32″
（7）currentMedia 可以通过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″
（8）currentPlaylist 可以通过currentPlaylist取得当前播放列表信息
（9）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。
autoStart：自动播放
setMode("loop", true); 设置循环播放
4.简单应用
（1）播放
url可以为指向本地的，也可以为指向服务器的
player.URL = @"C:\Users\David\Desktop\test.mp4";
player.URL = @"https://apd-447d450320d04ab29affdaabb7c6c9f7.v.smtcdns.com/om.tc.qq.com/AadOWCPdxXO55VINjYS_LyKiKwp33RtYlXlajQRzj22o/uwMRJfz-r5jAYaQXGdGnC2_ppdhgmrDlPaRvaV7F2Ic/l0726gpni5u.mp4";
（2）列表
player.settings.autoStart = true; //设置自动播放
player.settings.setMode("loop", true); //设置循环播放
string url1 = @"http://test.campus.ximalaya.com/group1/M00/FF/32/wKgD3lxr0UOAcKI4AAgWfJ258MM781.mp4";
string url2 = @"https://apd-447d450320d04ab29affdaabb7c6c9f7.v.smtcdns.com/om.tc.qq.com/AadOWCPdxXO55VINjYS_LyKiKwp33RtYlXlajQRzj22o/uwMRJfz-r5jAYaQXGdGnC2_ppdhgmrDlPaRvaV7F2Ic/l0726gpni5u.mp4";
player.currentPlaylist.appendItem(player.newMedia(url1));
player.currentPlaylist.appendItem(player.newMedia(url2));
player.Ctlcontrols.play();
