自己写的一个Gif播放类，支持任意控件上播放。自动获取时间。

using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Threading;
using System.Windows.Forms;

public class GifPlayer
{
    private bool _playing = false;
    public bool Playing 
    {
        get
        {
            return _playing;
        }
        set
        {
            _playing = value;
            if (value)
            {
                FrameDimension fd = new FrameDimension(Gif.FrameDimensionsList[0]);
                int framecount = Gif.GetFrameCount(fd);
                new Thread((ThreadStart)delegate
                {
                    Graphics g = null;
                    Host.Invoke((EventHandler)delegate { g = Host.CreateGraphics(); });
                    try
                    {
                        int i = 0;
                        while (!(Host == null || Host.IsDisposed) && i < framecount && Playing)
                        {
                            Gif.SelectActiveFrame(fd, i);
                            g.DrawImage(Gif, 0, 0);
                            int delay = 100;
                            for (int j = 0; j < Gif.PropertyIdList.Length; j++)//遍历帧属性
                            {
                                if ((int)Gif.PropertyIdList.GetValue(j) == 0x5100)//.如果是延迟时间
                                {
                                    PropertyItem pItem = (PropertyItem)Gif.PropertyItems.GetValue(j);//获取延迟时间属性
                                    byte[] delayByte = new byte[4];//延迟时间，以1/100秒为单位
                                    delayByte[0] = pItem.Value[i * 4];
                                    delayByte[1] = pItem.Value[1 + i * 4];
                                    delayByte[2] = pItem.Value[2 + i * 4];
                                    delayByte[3] = pItem.Value[3 + i * 4];
                                    delay = BitConverter.ToInt32(delayByte, 0) * 10; //乘以10，获取到毫秒
                                    break;
                                }
                            }
                            Thread.Sleep(delay == 0 ? 100 : delay);//如果获取时间错误，默认100毫秒间隔
                            if (Loop && ++i >= framecount) i = 0;
                        }

                    }
                    catch
                    {
                        return;
                    }
                    finally
                    {
                        g.Dispose();
                    }
                }).Start();
            }
        }
    }
    public Control Host { get; set; }
    public Image Gif { get; set; }
    public bool Loop { get; set; }
    public GifPlayer(Control host, Image gif, bool loop)
    {
        if (host == null || gif == null) throw new NullReferenceException();
        Host = host;
        Gif = gif;
        Loop = loop;
        Playing = true;//设置开始标记        
    }
}

调用方法

GifPlayer gif_player = null;
private void Form1_DoubleClick(object sender, EventArgs e)
{
    if (gif_player != null)
    {
        gif_player.Playing = false;
        gif_player = null;
    }
    OpenFileDialog dlg = new OpenFileDialog();
    dlg.Filter = "gif|*.gif||";
    if (dlg.ShowDialog() != DialogResult.OK) return;
    gif_player = new GifPlayer(this, Image.FromFile(dlg.FileName), true);//播放
    //gif_player.Playing = false;//停止播放
}