how to download the images / pdf / text files from a directroy.

how to download the images / pdf / text files from a directroy.

There is one simple solution to set the path of that file with hyperlink button and when user right click the file button it will show option for download. what you think that it is correct. No.

so we have to get some steps

using directoryinfo class read all the files from dwonload directroy. and create a anchor tag redirecting on dowloadin page.

On Downlaoding page.

get the file name from url of page and

using FileStream class streamed out that file.
and that streamed file passed as constructor of binary reader class
and get the downlaod of server file.

Benifit :- this approch we can hide the orignal location of files.

code is following :-

On free download page.
// using System.IO;
DirectoryInfo di = new DirectoryInfo(Server.MapPath("~/images"));
int i = 0;
foreach (FileInfo fi in di.GetFiles())
{
HyperLink HL = new HyperLink();
HL.ID = "HyperLink" + i++;
HL.Text = fi.Name;
HL.NavigateUrl = "downloading.aspx?file=" + fi.Name;
Page.Controls.Add(HL);
Page.Controls.Add(new LiteralControl("<br/>"));
}


On freedownlaoding page
protected void Page_Load(object sender, EventArgs e)
{
string filename = Request["file"].ToString();
fileDownload(filename, Server.MapPath("~/images/"+filename));

}

private void fileDownload(string fileName, string fileUrl)
{
Response.Clear();
bool success = ResponseFile(Page.Request, Page.Response, fileName, fileUrl, 1024000);
if (!success)
Response.Write("Downloading Error!");
Response.End();
}

public bool ResponseFile(HttpRequest _Request, HttpResponse _Response, string _fileName, string _fullUrl, long _speed)
{
try
{
FileStream myFile = new FileStream(_fullUrl, 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;
int pack = 10240; //10K bytes
int sleep = (int)Math.Floor((double)(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((double)((fileLength - startBytes) / pack)) + 1;
for (int i = 0; i <>
{
if (_Response.IsClientConnected)
{
_Response.BinaryWrite(br.ReadBytes(pack));
Thread.Sleep(sleep);
}
else
{
i = maxCount;
}
}
}
catch
{
return false;
}
finally
{
br.Close();
myFile.Close();
}
}
catch
{
return false;
}
return true;
}


Thanks
Helpondesk Team