Error in Downloading a file Form Server

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Hi i Have Designed a application in which i wil be uploading and Downloadint the File, When i Click a LInk Button to download a file a Post Back triggers and file is downloaded But the Prolem is when file is downloaded my UI Font becomes Bigger plz suggest to over come from this error

Code on Link Click

VB

Protected Sub lnkAttach_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles lnkAttach.Click
        Dim jscript As String
        Dim download As String
        download = "download.aspx?FileId=" & lnkAttach.Text
        jscript = "<script>"
        jscript = jscript & "var winPrint=window.open('" & download & "', '', 'letf=0,top=0,width=1,height=1,toolbar=0,scrollbars=0,status=0');" & vbCrLf
              jscript = jscript & "</script>"

        HttpContext.Current.Response.Write(jscript)

    End Sub

Code In the download.aspx

VB

Dim strURL As String = "fileServer/" & Request.QueryString("FileId")

 Dim req As New WebClient()
 Dim response As HttpResponse = HttpContext.Current.Response
 response.Clear()
 response.ClearContent()
 response.ClearHeaders()
 response.Buffer = True
 response.AddHeader("Content-Disposition", "attachment;filename=" + Server.MapPath(strURL) + "")
 Dim data As Byte() = req.DownloadData(Server.MapPath(strURL))
 response.BinaryWrite(data)
 response.[End]()

Posted 14-Jun-12 23:48pm

Diler Patel

Updated 14-Jun-12 23:58pm

v2

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Pankaj Nikam · Accepted Answer · 2012-06-14T23:50:00

Solution 1

Instead of writing it directly to the response stream, try the following.

VB

Dim downloadURL As String = String.Format("window.open('download.aspx?fileID={0}','_blank','toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=no, copyhistory=no, width=400, height=400');", lnkAttach.Text)

ScriptManager.RegisterClientScriptBlock(Me, Me.GetType(), "download-file", downloadURL, True)

Try this and let me know if it works.

Posted 14-Jun-12 23:50pm

Pankaj Nikam

Updated 18-Jun-12 0:48am

v4

Comments

Diler Patel 15-Jun-12 6:30am

Hi Pankaj i have updated my Question Plz Review it

Pankaj Nikam 15-Jun-12 6:56am

Check this solution and do let me know if it works.`

Diler Patel 15-Jun-12 8:03am

hey i Checked Out i gets a erroe Saying Invalid Arguments . . Just i have to write the above code in link button click right?

Pankaj Nikam 15-Jun-12 8:08am

Have you copy pasted the code or changed it? It runs fine on my machine, I do get a popup... And yes you have to put that code in LinkButtonClick...

Diler Patel 15-Jun-12 8:12am

ya i just Copied and Pasted And in my download.aspx page load i have the code it should be there or no?

Pankaj Nikam 15-Jun-12 8:21am

I had updated the code (V3) the V2 had that error of Invalid Arguments so I fixed it in V3... I just tried to copy the code and paste it. Its working fine... Try clearing cache of the browser...

Diler Patel 15-Jun-12 8:16am

I m Using asp.net 2008 What About yours?

Pankaj Nikam 15-Jun-12 8:19am

Yea even I am using VS 2008 and ASP.NET 3.5. Are you getting the error on the page (ASP.NET error) or is it JavaScript error?

Diler Patel 15-Jun-12 8:26am

Error is in java script And i wil clear cache and i wil try and inform u

Pankaj Nikam 15-Jun-12 8:30am

OK :)

Diler Patel 15-Jun-12 8:55am

Yes Dude i got it But Not Working in IE 8 :(

Pankaj Nikam 16-Jun-12 8:49am

Dude why do you want a popup any special reason? Wouldnt be it good to simply download the file without the popup?

Diler Patel 18-Jun-12 1:42am

ya i m trying to just download the file Actually i m begginer in .net so dont know exactlly so u suggest me how to come out of this problem

Pankaj Nikam 18-Jun-12 2:14am

OK not an issue, I can help you with that.
On the click event of the button, you can just try to do a Response.Redirect(String.Format("download.aspx?FileId={0}",lnkAttach.Text).

This will be a much simpler solution. Try it.

Diler Patel 18-Jun-12 6:19am

sorry dude first i had tried the same but how my process is Purchase order wil be created while creating purchase order user will attach vendor rate contract or recived Quotation, In Purchase Approval screen user want to view the Attachment. so i can't redirect the full page to download so i need if user click the link download should start . . ur previous code work awesome in IE 9 but not in IE 8 i want the code should download on IE 7 or 8 case max of user uses IE 7 or 8

Any Suggestion?

Pankaj Nikam 18-Jun-12 6:31am

You can create a custom handler to handle the code. You can make a user download the file with the handler. It will be a easier scenario if you do not need anything to display on the Download.aspx page.

Pankaj Nikam 18-Jun-12 6:50am

Anyway, I have put up updated code which I have tested with developer tools by setting the browser mode to IE8, IE7 and it works. Try the updated code on a machine with actual IE8 and IE7 and do let me know.

Diler Patel 18-Jun-12 7:16am

yes i have checked on different Client Machines Which have IE 7,8 & 9. it runs on IE 9 but On IE 8 and IE 7 POP up comes and disappers, i Cant download nor i cant View the Document. . . i think Something i m Missing but dont know what

Pankaj Nikam 18-Jun-12 7:22am

It is really strange that popup comes and goes away on the earlier versions. If it did not have any popup, it could have meant a popup blocker... this is not the case though as you have mentioned that popup does show. I actually do not have IE7 or IE8 as I am using Win7... All I can do is try to rely on Developer Tools provided in IE9.
Have you tried any different site with popups on the machine you have mentioned?

Diler Patel 18-Jun-12 8:34am

yes i have Tried Other Sites and Tried to download the file those sites works fine but for my web app thats the Problem :(. . . .