事先准备：

1、DirectX 两个必备的dll文件http://download.csdn.net/detail/yao__shun__yu/5981799

2、下载解码器FinalCodecs1.13.0719.exe【找不到的加我群5307397】

代码块：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using Microsoft.DirectX.AudioVideoPlayback;

namespace ScreenServer
{
    public partial class VideoPlayer : Form
    {
        [DllImport("user32.dll")]
        public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hPos,
        int x, int y, int cx, int cy, uint nflags);

        #region private Member
        //add by fuzhengwei 2013年8月21日
        //临时存放视频播放路径
        private static string videoUrlBuffer = null;
        
        //add by fuzhengwei 2013年8月21日
        //记录播放时长
        private static long duration;

        //add by fuzhengwei 2013年8月21日
        //打开过滤
        private readonly string filterText = "Video Files (*.avi; *.mov; *.mpg; *.mpeg; *.ts; *.wmv; *.vob; *.dat; *.rm; *.rmvb; *.flv)|*.avi; *.mov; *.mpg; *.mpeg; *.ts; *.wmv; *.vob; *.dat; *.rm; *.rmvb; *.flv";

        //add by fuzhengwei 2013年8月21日
        //Video
        private Video myVideo = null;
        #endregion

        

        public VideoPlayer()
        {
            InitializeComponent();

            //窗口置顶
            IntPtr HWND_TOPMOST = new IntPtr(-1);
            SetWindowPos(this.Handle, HWND_TOPMOST, 0, 0, 0, 0, 0x0001 | 0x0002);

            //窗口最大化
            this.WindowState = System.Windows.Forms.FormWindowState.Maximized;

            
        }

        //add by fuzhengwei 2013年8月21日
        //打开视频
        private void openVideoToolStripMenuItem_Click(object sender, EventArgs e)
        {

            openVideoFileDialog.InitialDirectory = Application.StartupPath;

            openVideoFileDialog.Title = "Open Video File";

            openVideoFileDialog.Filter = filterText;

            if(openVideoFileDialog.ShowDialog() == DialogResult.OK)
            {
                videoUrlBuffer = openVideoFileDialog.FileName;

                myVideo = new Video(videoUrlBuffer);

                myVideo.Owner = videoPanel;

                myVideo.Play();

                duration = (int)myVideo.Duration;

                //调用显示时间函数
                showTimeInPanel(duration);

                videoTimer.Enabled = true;
            }

        }

        //add by fuzhengwei 2013年8月21日
        //播放视频
        private void playVideoToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (null == videoUrlBuffer)
            {
                MessageBox.Show("请点击\"打开\"选择视频路径！");
            }
            else
            {
                videoTimer.Enabled = true;

                showTimeInPanel(duration);

                myVideo.Play();
            }
            
        }

        //add by fuzhengwei 2013年8月21日
        //暂停视频
        private void plauseToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //暂停timer
            videoTimer.Enabled = false;

            myVideo.Pause();
        }

        //add by fuzhengwei 2013年8月21日
        //停止视频
        private void stopToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //暂停timer
            videoTimer.Enabled = false;

            //显示时间清零
            showTimeInPanel(0);
            //显示时间清零
            conShowTimeInPanel(0);

            myVideo.Stop();
        }

        //add by fuzhengwei 2013年8月21日
        //时间显示在屏幕上
        private void showTimeInPanel(long durateTime)
        {
            videoTime.Text = ConvertTimeToString(durateTime);
        }

        //add by fuzhengwei 2013年8月21日
        //每隔一毫秒显示一次时间在panel上
        private void conShowTimeInPanel(long durateTime)
        {
            runTimelabel.Text = ConvertTimeToString(durateTime);
        }

        //add by fuzhengwei 2013年8月21日
        //格式化时间
        private string ConvertTimeToString(double time)
        {
            string timeFormat = "00:00:00";
            int hours = 0;
            int minutes = 0;
            int seconds = 0;

            checked
            {
                hours = (int)time / 3600;
                minutes = ((int)time - (hours * 3600)) / 60;
                seconds = (int)time - hours * 3600 - minutes * 60;
            }

            timeFormat = string.Format("{0:D2}:{1:D2}:{2:D2}", hours, minutes, seconds);

            return timeFormat;
        }

        //add by fuzhengwei 2013年8月21日
        //循环时间事件
        private void videoTimer_Tick(object sender, EventArgs e)
        {
            conShowTimeInPanel((int)myVideo.CurrentPosition);
        }


    }
}