用stream模式下载大文件是遇到的问题？

Question

只说第二个iStream.Close();
     iStream = null;
     iStream.Dispose();

Answer 1

开通Ftp不好吗？大文件这样传输能保证是断点传送的，万一网络不好怎么办？

Answer 2

to  popu2(混口饭吃)
我马上测试一下to Jouzen() 
现在用下载工具是实现了断点续传的，用FTP传有很多安全漏洞

Answer 3

iStream.Dispose();?
好象不支持DISPOSE函数呀

Answer 4

try:using(Stream iStream= new FileStream(FilePath, System.IO.FileMode.Open, 
FileAccess.Read,FileShare.Read)){
     if (this.StartPoint>0)
     iStream.Seek(this.StartPoint,SeekOrigin.Begin );
     FileLength=iStream.Length;
     long  ByteToRead = FileLength-this.StartPoint ;
     FileInfo fileinfo = new FileInfo(FilePath);
     String FileName = fileinfo.Name;

     Response.Clear();
     Response.ContentType = "video/wmv";
     Response.AddHeader("Content-Disposition", "attachment; filename="+   HttpUtility.UrlEncode(FileName,System.Text.Encoding.UTF8));
     Response.AddHeader("Content-Length", ByteToRead.ToString());
     Response.Flush();     byte[] Buffer;
     int BufferLength=Convert.ToInt32(System.Configuration.ConfigurationSettings.AppSettings["BufferLength"]);     int Len=1;             
     this.CheckTimer.Enabled=true;
     while (Len>0 && ClientClosed==false)
    {
Buffer= new Byte[BufferLength];
Len = iStream.Read(Buffer, 0, BufferLength); Response.OutputStream.Write(Buffer,0,Len);
Response.Flush();
         ClientClosed=!this.Response.IsClientConnected;
     }
     iStream.Close();
     Response.End();
}

Answer 5

http://support.microsoft.com/default.aspx?scid=kb;en-us;812406&Product=aspnet

Answer 6

FileStream类是支持多进程同时读的，只要不混合读写就行啦！但是FileStream类的path参数似乎不支持URI格式，恳请指点……