Download Multiple Files with Asp.net

[arya009]

Hello guys,

I need one help. I have written a code for downloading files on a given link. Single file download is working properly. but i want to create a functionality for download all. User can check multiple files and then when he selects download button it should download all the selected files automatically.

regards,


My current Code :

Dim strRequest() As String '= Request.QueryString("file") '-- if something was passed to the file querystring
        Dim i As Integer
        strRequest = Split("YServer.txt,PkgClnup.log", ",")
        For i = 0 To UBound(strRequest)
            Response.Write(Server.MapPath(strRequest(i)) & " : " & i)
            If strRequest(i) <> "" Then 'get absolute path of the file
                Dim path As String = Server.MapPath(strRequest(i)) 'get file object as FileInfo                
                'Dim file As System.IO.FileInfo = New System.IO.FileInfo(path) '-- if the file exists on the server

                Dim fs As FileStream
                fs = File.Open(path, FileMode.Open)
                Dim bytBytes(fs.Length) As Byte
                fs.Read(bytBytes, 0, fs.Length)
                fs.Close()

                Response.AddHeader("Content-Disposition", "attachment; filename=" & strRequest(i))
                'Response.AddHeader("Content-Length", File.Length.ToString())
                Response.ContentType = "APPLICATION/OCTET-STREAM"
                Response.Flush()
                Response.BinaryWrite(bytBytes)
                Response.Clear()
                Response.ClearHeaders()
                Response.ClearContent()
            Else
                Response.Write("Please provide a file to download.")
            End If
            Response.End() 'if file does not exist
        Next

[handshakeit]

Hi arya009

I think to download multiple files you should first zip all selected files and then download that single zip file. It is quet reasonable since web page's response is stream based and each request will only return a single response stream.
I hope this helps,
Thanx
Abhishek
www.handshakeit.com

[arya009]

Yes Thats the solution i gave to my client but he wants to download them individually and with a single click

[athaullahg]

hi,
I am also looking for the same solution. As i can download one file but i need to download multiple files to client. Is there any other way to do so?

[magupta77]

Hey Guys,
check this link
http://www.motobit.com/tips/detpg_mu...s-one-request/

[dharmeshkubavat]

YES, you can download multiple files.

Open multiple window with javascript with new name, call your aspx page in that new window.

suppose you want to download 5 files, you will be opening 5 new window from javascript. and you know how to call javascript from code behind :-)

/// Codebehind

ClientScript.RegisterStartupScript(Me.GetType(), flname, "<script language='javascript'>fnOpen('" & flname & "');</script>")

NOTE : flname = pdf file name ('without .pdf extension')


/// javascript

function fnOpen(fl)
{
var flnm =fl+'.pdf'
window.open('OpenPDF.aspx?FILENAME='+ flnm,fl);

}



/// OpenPDF.aspx code

in page load


Response.Clear()
Response.ContentType = "Application/PDF"
Response.AppendHeader("Content-Disposition", "attachment; filename=" & Request.QueryString("FILENAME"))
Response.WriteFile(Request.QueryString("FILENAME"))
Response.Flush()
Response.Close()
happy coding

[sieunhantanbao]

YES, you can download multiple files.

Open multiple window with javascript with new name, call your aspx page in that new window.

suppose you want to download 5 files, you will be opening 5 new window from javascript. and you know how to call javascript from code behind :-)

/// Codebehind

ClientScript.RegisterStartupScript(Me.GetType(), flname, "<script language='javascript'>fnOpen('" & flname & "');</script>")

NOTE : flname = pdf file name ('without .pdf extension')


/// javascript

function fnOpen(fl)
{
var flnm =fl+'.pdf'
window.open('OpenPDF.aspx?FILENAME='+ flnm,fl);

}



/// OpenPDF.aspx code

in page load


Response.Clear()
Response.ContentType = "Application/PDF"
Response.AppendHeader("Content-Disposition", "attachment; filename=" & Request.QueryString("FILENAME"))
Response.WriteFile(Request.QueryString("FILENAME"))
Response.Flush()
Response.Close()
happy coding

Thank you so much. It works fine for me.