ClientScript.RegisterStartupSc...

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Hi,

I need to call for the windows.open java instruction to show an excel or a pdf that I create dinamically from an active.report document, I have try a looootss of response headers and others stuff but nothing seems to work with Ie7, the page blinks for a second and disappear. I can't make any modification on the configuration of the Ie7 'not allowed by the client', or puting the windows.open on the onclick event of the button, because I need to generate the report dinamically first. this works perfect with Ie8 and Ie6, the problem is Ie7. It's been two weeks I've been looking for a solution, I would really appreciate some help. here is the code.

to put it simple, I need to make this line to work in IE7

SQL

Page.ClientScript.RegisterStartupScript(Me.GetType(), "click", "window.open('appData/test.xls','','location=no,resizable=yes,scrollbars=yes');", True)

for the example I´m using a one page simple document, it works in I8 and Ie6, but blink and disappear in I7, the same if I use a pdf. if I try with a txt, works perfect in all browsers.

Posted 15-Oct-12 9:32am

OtroCubaLibre

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n.podbielski 15-Oct-12 17:52pm

Are you setting mime type?

OtroCubaLibre 16-Oct-12 10:23am

Hi, thanks for the response, yes I used "application/pdf" for pdf and "application/vnd.ms-excel" for excel.

Rohit Shrivastava 15-Oct-12 18:16pm

I can suggest following:

1. Check if IE7 blocking pop-up window for your application.
2. Check if IE7 have mapping for xls to excel to show.
3. Try to give a name to window in window.open. Page.ClientScript.RegisterStartupScript(Me.GetType(), "click", "window.open('appData/test.xls','testxls','location=no,resizable=yes,scrollbars=yes');", True)
4. Check if you get any javascript error on IE7
5. Check using fiddler if request for test.xls is going to server and what response is coming.

That's all I can think of now.
Thanks
Rohit

OtroCubaLibre 16-Oct-12 10:20am

Hi Rohit, thanks for your quick response, I checked all you suggest me and is the same, no blocking, the mapping is fine, put a name to the window, no javascript errors and install fiddler, this are the headers for the request and the response, can you see something rare in the headers??

Request Headers

POST /.../default.aspx HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*
Referer: http://.../default.aspx
Accept-Language: en-us
Content-Type: application/x-www-form-urlencoded
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727)
Connection: Keep-Alive
Content-Length: 196
Host: ...
Pragma: no-cache

Response Headers

HTTP/1.1 200 OK
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Encoding: gzip
Vary: Accept-Encoding
Server: Microsoft-IIS/7.5
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Date: Tue, 16 Oct 2012 13:52:16 GMT
Content-Length: 583

Rohit Shrivastava 16-Oct-12 10:46am

I doubt that these request / response headers are for window.open. these seems for the page when it loads. window.open request must be a GET request, it cannot be a POST request for default.aspx. I assume popup window opens when user clicks on some button. If do not see any request for "appData/test.xls" then it means that window.open function is not been executed successfully and its a client side java-script problem.

OtroCubaLibre 16-Oct-12 10:55am

You are right, I'm new in fiddler, this would be the correct header. thanks again.

Request Headers

GET /.../appData/prueba.pdf HTTP/1.1
Accept: */*
Accept-Language: en-us
UA-CPU: x86
Accept-Encoding: gzip, deflate
If-Modified-Since: Wed, 12 Sep 2012 18:15:34 GMT
If-None-Match: "e433319a1291cd1:0"
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727)
Host: ssti06
Connection: Keep-Alive

Response Headers

HTTP/1.1 304 Not Modified
Last-Modified: Wed, 12 Sep 2012 18:15:34 GMT
Accept-Ranges: bytes
ETag: "e433319a1291cd1:0"
Server: Microsoft-IIS/7.5
X-Powered-By: ASP.NET
Date: Tue, 16 Oct 2012 13:52:16 GMT

Rohit Shrivastava 16-Oct-12 11:07am

Response indicates that its cached on client side which also means that file has been downloaded on client machine. Please delete all temporary files and rerun the test and capture fiddler response again which will let us know what MIME-TYPE are we receiving..

Rohit Shrivastava 16-Oct-12 11:18am

also try to add Response.AppendHeader('Expires', 'Sun, 17 Dec 1989 07:30:00 GMT');
Based on http://edn.embarcadero.com/article/39141

Also check for --> Go to tools/internet options/security/custom level and check if "Automatic prompting for file downloads" is disabled.

Please check this thread if it helps http://forums.asp.net/t/1170854.aspx/1/10

OtroCubaLibre 16-Oct-12 12:17pm

Hi, these are the headers after deleting, I also try adding the expires header and is the same. Automatic prompting for file download is disable, but I can't change nothing in the Ie configuration of the client.

Request Headers

GET /.../appData/prueba.pdf HTTP/1.1
Accept: */*
Accept-Language: en-us
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727)
Host: ssti06
Connection: Keep-Alive

Response Headers

HTTP/1.1 200 OK
Content-Type: application/pdf
Last-Modified: Wed, 12 Sep 2012 18:15:34 GMT
Accept-Ranges: bytes
ETag: "e433319a1291cd1:0"
Server: Microsoft-IIS/7.5
X-Powered-By: ASP.NET
Date: Tue, 16 Oct 2012 15:41:49 GMT
Content-Length: 2670

2 solutions

Solution 1

you can try Response.Write as following :

C#

Response.Write("<script>window.open('YourUrl');</script>");

Posted 15-Oct-12 20:06pm

Bhushan Shah1988

Comments

OtroCubaLibre 16-Oct-12 10:29am

Hi Bhushan, I tried your solution and is the same, in fact in the fiddlers both calls have the same headers.

Response.Write("<script>window.open('appData/prueba.pdf','pruebapdf','location=no,resizable=yes,scrollbars=yes');</script>")

Page.ClientScript.RegisterStartupScript(Me.GetType(), "click", "<script>window.open('appData/prueba.pdf','pruebapdf1','location=no,resizable=yes,scrollbars=yes');</script>")

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Rohit Shrivastava · Accepted Answer · 2012-10-16T08:30:00

Ok, now I think, I understood your problem, it is about "Automatic prompting for file download is disable". I assume following is your sequence of action:

1. On a button click, you post back the form
2. Do the processing of generating report (ending up with creating a file on server)
3. Render client side start-up script window.open with the generated file and expects to open file download in another window.

I hope my assumption is correct. Now following are solutions:

1. Instead of rendering window.open, clear the response and stream the file which you created in response which will also allow you to cleanup the file once its rendering is complete. This may result in file downloaded in the same window, but this should not impact anything.

2. Write a custom download handler (custom HttpHandler), quite easy to write. It will generate the file and stream and clean up. Now you can easily use hyperlink with target ="_blank" which will open the file download in new window.

These solution would solve your problem.

Thanks
Rohit