Let me say:
Click the first link pop up the save as box,then click cancel。Next,
Click the second link pop up the save as box,then click cancel。Next,
Click the third link pop up the save as box,then click cancel。
At the moment,The pop up box do not show and the page same as busying!
The condition just in win7 . In XP no problem.
Sorry for my bad english! Index.aspx:
<a href="ShowFile.aspx?fileID=1" >download</a>
<a href="ShowFile.aspx?fileID=2" >download</a>
<a href="ShowFile.aspx?fileID=3">download</a>
<a href="ShowFile.aspx?fileID=4" >download</a>
ShowFile.aspx.cs:
protected void Page_Load(object sender, EventArgs e)
{
Page.Response.Clear();
bool success = ResponseFile(Page.Request, Page.Response, "1.doc", @"d:\1.doc", 1024000);
if (!success)
Response.Write("dowload error！");
Page.Response.End();
}
public static bool ResponseFile(HttpRequest _Request, HttpResponse _Response, string _fileName, string _fullPath, long _speed)
{
try
{
FileStream myFile = new FileStream(_fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
BinaryReader br = new BinaryReader(myFile);
try
{
_Response.AddHeader("Accept-Ranges", "bytes");
_Response.Buffer = false;
long fileLength = myFile.Length;
long startBytes = 0;
double pack = 10240; //10K bytes
//int sleep = 200; //
int sleep = (int)Math.Floor(1000 * pack / _speed) + 1;
if (_Request.Headers["Range"] != null)
{
_Response.StatusCode = 206;
string[] range = _Request.Headers["Range"].Split(new char[] { '=', '-' });
startBytes = Convert.ToInt64(range[1]);
}
_Response.AddHeader("Content-Length", (fileLength - startBytes).ToString());
if (startBytes != 0)
{
//Response.AddHeader("Content-Range", string.Format(" bytes {0}-{1}/{2}", startBytes, fileLength-1, fileLength));
}
_Response.AddHeader("Connection", "Keep-Alive");
_Response.ContentType = "application/octet-stream";
_Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(_fileName, System.Text.Encoding.UTF8));
br.BaseStream.Seek(startBytes, SeekOrigin.Begin);
int maxCount = (int)Math.Floor((fileLength - startBytes) / pack) + 1;
for (int i = 0; i < maxCount; i++)
{
if (_Response.IsClientConnected)
{
_Response.BinaryWrite(br.ReadBytes(int.Parse(pack.ToString())));
Thread.Sleep(sleep);
}
else
{
i = maxCount;
}
}
}
catch
{
return false;
}
finally
{
br.Close();
myFile.Close();
}
}
catch
{
return false;
}
return true;
}
