asp.net 中插入flash

最近写了一个关于在asp.net 下，播放flash 的东西。其实，这东西大家都很熟悉，网上关于此类的代码也很多，但是请注意下边代码的红色注释，flash文件为本工程下的目录。
如：

<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0"
                        width="575" height="375" align="middle">
                        <param name="movie" value='/flashs/flash.swf''> 注意：此处为该工程下的相对目录
                        <param name="quality" value="high">
                        <param name="wmode" value="Transparent" />
                        <param name="menu" value="false" />
                        <param name="FlashVars" value="init=yes&check=true" />
                        <embed src='/flashs/flash.swf'''  ——注意：此处为该工程下的相对目录
                        quality="high" wmode="transparent" width="575" height="375"
                            name="fileUpload" align="middle" allowscriptaccess="sameDomain" type="application/x-shockwave-flash"
                            pluginspage="http://www.macromedia.com/go/getflashplayer" /></object>

可是如果要是工程外部的目录或者是其他的磁盘映射，这么是无法工作的。那怎么办呢！功夫不负我这样的有心人，终于在网上找到一关于把flash 转换成stream 的一个方法，经过一点小的改动完成。
如下：
FLVStreamHandler 代码：
<%@ WebHandler Language="C#" Class="FLVStreamHandler" %>

using System;
using System.Web;
using System.IO;
using Tribal.Tsite.API;
using Tribal.Tsite.Implementation;

public class FLVStreamHandler : IHttpHandler {

    private static readonly byte[] _flvheader = HexToByte("464C5601010000000900000009"); //"FLV\x1\x1\0\0\0\x9\0\0\0\x9"
    
    public void ProcessRequest (HttpContext context) 
    {
        
       
        
        try
        {
            int pos;
            int length;

            // Check start parameter if present
            //string filename = Path.GetFileName(context.Request.FilePath);
            int flashId = int.Parse(context.Request.QueryString["Id"]);
            MainController mainController = MainController.GetInstance();
            IFlashFile flashFile = mainController.FlashFileController.GetFlashFileById(flashId);

            string flashPath = "";
            if (File.Exists(flashFile.FilePath + flashFile.FileName))
                flashPath=flashFile.FilePath + flashFile.FileName;
            else
                flashPath = context.Server.MapPath("~/App_Themes/Normal/Images/default.swf");
                
            using (FileStream fs = new FileStream(flashPath, FileMode.Open, FileAccess.Read, FileShare.Read))
            {
                string qs = context.Request.Params["start"];

                if (string.IsNullOrEmpty(qs))
                {
                    pos = 0;
                    length = Convert.ToInt32(fs.Length);
                }
                else
                {
                    pos = Convert.ToInt32(qs);
                    length = Convert.ToInt32(fs.Length - pos) + _flvheader.Length;
                }


                // Add HTTP header stuff:clear cache, content type and length        
                context.Response.Cache.SetCacheability(HttpCacheability.NoCache);//注意：如果每次打开都不变换flash文件，请使用缓存
              //context.Response.Cache.SetCacheability(HttpCacheability.Public);
                context.Response.Cache.SetExpires(DateTime.Now.AddDays(-1));
                context.Response.Cache.SetLastModified(DateTime.Now);

                context.Response.AppendHeader("Content-Type", "video/x-flv");
                context.Response.AppendHeader("Content-Length", length.ToString());
                
                // Append FLV header when sending partial file
                if (pos > 0)
                {
                    context.Response.OutputStream.Write(_flvheader, 0, _flvheader.Length);
                    fs.Position = pos;
                }

                // Read buffer and write stream to the response stream
                const int buffersize = 16384;
                byte[] buffer = new byte[buffersize];

                int count = fs.Read(buffer, 0, buffersize);
                while (count > 0)
                {
                    if (context.Response.IsClientConnected)
                    {
                        context.Response.OutputStream.Write(buffer, 0, count);
                        count = fs.Read(buffer, 0, buffersize);
                    }
                    else
                    {
                        count = -1;
                    }
                }
            }
        }
        catch (Exception ex)
        {
            System.Diagnostics.Debug.WriteLine(ex.ToString());
        }
    }
 
    public bool IsReusable 
    {
        get 
        {
            return false;
        } 
    }

    private static byte[] HexToByte(string hexString)
    {
        byte[] returnBytes = new byte[hexString.Length / 2];
        for (int i = 0; i < returnBytes.Length; i++)
            returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
        return returnBytes;
    }

}

前台代码：
 

<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0"
                        width="575" height="375" align="middle">
                        <param name="movie" value='http://www.cnblogs.com/Handler/FLVStreamHandler.ashx?Id=<%=FlashFileId %>'>注意：通过FLVStreamHandler.ashx把fllash流化
                        <param name="quality" value="high">
                        <param name="wmode" value="Transparent" />
                        <param name="menu" value="false" />
                        <param name="FlashVars" value="init=yes&check=true" />
                        <embed src='http://www.cnblogs.com/Handler/FLVStreamHandler.ashx?Id=<%=FlashFileId %>' quality="high" wmode="transparent" width="575" height="375"
                            name="fileUpload" align="middle" allowscriptaccess="sameDomain" type="application/x-shockwave-flash"
                            pluginspage="http://www.macromedia.com/go/getflashplayer" /></object>

以上是我在开发时，解决asp.net 中插入flash的一种方法。