我做的下载总是到99%就卡住了，大家帮我看看！

[xiaozi151]

byte accessory=dt.Rows[0]["accessory"] as byte[];
Response.Clear();
Response.AddHeader("Content-Disposition","attachment:FileName="+HttpUtility.UrlEncode(dt.Rows[0]["reamark"].ToString(),System.Text.Encoding.UTF8).ToString());
Response.Content="application/octet-stream";
Response.BinaryWrite(accessory);
Response.End();

我用发布到iis7.0上，用localhost网址去用下载没问题，用id去访问，下载总到99%就卡住了。。而且用其他机器访问也是一样，到99%就卡了，请问是我哪里写错了么？

[xiaozi151]

刚发现，下载一下子就99%了，但是过N长时间后才下载完成，下载框下显示“ smartscreen 暂时不可用”。

[机器人]

byte[] accessory =dt.Rows[0]["accessory"] as byte[];
Response.Clear();
Response.AddHeader("Content-Disposition","attachment;FileName="+HttpUtility.UrlEncode(dt.Rows[0]["reamark"].ToString(),System.Text.Encoding.UTF8).ToString());

Response.AddHeader("Connection", "Keep-Alive");
Response.AddHeader("Content-Length", accessory.Length.ToString());
Response.Content="application/octet-stream";
Response.BinaryWrite(accessory);
Response.End();

[langWf]

if (reader.Read())
{
string filename = reader["ffile"].ToString();
//filename = filename.ToLower() ;
string last = filename.Substring(filename.LastIndexOf('.'));
filename = filename.Substring(0, filename.LastIndexOf('.')) + last;
string ct = "application/octet-stream" ;
if (filename.LastIndexOf(".avi")>0) ct = "video/avi" ; else
if (filename.LastIndexOf(".dot")>0) ct = "application/msword" ; else
if (filename.LastIndexOf(".doc")>0) ct = "application/msword" ; else
if (filename.LastIndexOf(".rtf")>0) ct = "application/msword" ; else
if (filename.LastIndexOf(".exe")>0) ct = "video/x-msdownload" ; else
if (filename.LastIndexOf(".htm")>0) ct = "text/html" ; else
if (filename.LastIndexOf(".html")>0) ct = "text/html" ; else
if (filename.LastIndexOf(".jpg")>0) ct = "image/jpeg" ; else
if (filename.LastIndexOf(".jpeg")>0) ct = "image/jpeg" ; else
if (filename.LastIndexOf(".gif")>0) ct = "image/gif" ; else
if (filename.LastIndexOf(".bmp")>0) ct = "image/bmp" ; else
if (filename.LastIndexOf(".tif")>0) ct = "image/tiff" ; else
if (filename.LastIndexOf(".tiff")>0) ct = "image/tiff" ; else
if (filename.LastIndexOf(".mp3")>0) ct = "video/mp3" ; else
if (filename.LastIndexOf(".mp4")>0) ct = "video/mpeg4" ; else
if (filename.LastIndexOf(".mpg")>0) ct = "video/mpg" ; else
if (filename.LastIndexOf(".mpeg")>0) ct = "video/mpg" ; else
if (filename.LastIndexOf(".png")>0) ct = "image/png" ; else
if (filename.LastIndexOf(".ppt")>0) ct = "application/vnd.ms-powerpoint" ; else
if (filename.LastIndexOf(".swf")>0) ct = "application/x-shockwave-flash" ; else
if (filename.LastIndexOf(".txt")>0) ct = "text/plain" ; else
if (filename.LastIndexOf(".wav")>0) ct = "audio/wav" ; else
if (filename.LastIndexOf(".xls")>0) ct = "application/vnd.ms-excel" ; else
if (filename.LastIndexOf(".xlm")>0) ct = "text/xml" ;

Response.Buffer = true;//
Response.Clear();//
Response.ContentType=ct ;///"application/octet-stream";
//Response.Charset = "'utf-8'" ;
//Response.ContentEncoding = System.Text.Encoding.Unicode ; // .UTF8 ;
int i = filename.LastIndexOf(".") ;
string ext = "" ;
if (i>0)
{
ext = filename.Substring(i) ;
filename = filename.Substring(0,i) ;
} ;
filename = HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8) ;
filename = filename+ext ;
Response.AddHeader("Content-Disposition", "inline;attachment;filename=\"" + filename + "\"");

//Response.AddHeader("Content-Length", reader["da_size"].ToString());
Byte[] b = (Byte[])reader["fcontent"];

Response.AddHeader("Content-length", Convert.ToString(b.Length));
if (b.Length == 0)
{
Byte[] b2 = { Byte.Parse("32") };
Response.BinaryWrite(b2);
}
else
{
Response.BinaryWrite(b);
}
Response.Flush();
Response.End();
} ;
reader.Close();

[子夜__]

#region 文件下载
       public bool DownLoadFile(string localPath, string hostURL, int byteCount, string userID, long cruuent)
       {
           
           bool result = true;
           
           
           string tmpURL = hostURL;
          
           byteCount = byteCount * 1024;
           hostURL = tmpURL + "&npos=" + cruuent.ToString();
           
           System.IO.FileStream fs;  
           fs = new FileStream(localPath, FileMode.OpenOrCreate);
           if (cruuent > 0)
           {
               //偏移指针
               fs.Seek(cruuent, System.IO.SeekOrigin.Current); 
           }


           System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(hostURL);
           if (cruuent > 0)
           {
               request.AddRange(Convert.ToInt32(cruuent));    //设置Range值
           }

           try
           {
               //向服务器请求，获得服务器回应数据流
               System.IO.Stream ns = request.GetResponse().GetResponseStream();

               byte[] nbytes = new byte[byteCount];
               int nReadSize = 0;
               nReadSize = ns.Read(nbytes, 0, byteCount);
              
               while (nReadSize > 0)
               {
                   fs.Write(nbytes, 0, nReadSize);
                   nReadSize = ns.Read(nbytes, 0, byteCount);
                  
               }
               fs.Close();
               ns.Close();
           }
           catch(Exception ex)
           {
               LOG.Error("下载" + localPath + "的时候失败！" + "原因是:" + ex.Message);
               fs.Close();
               result = false;
           }
        

           return result;
         
       }
       #endregion 

[机器人]

Response.End();
改为
Response.Flush();

[xiaozi151]

改成了Response.Flush(); 还是不行