Problem with Response.Write

Question

1.00/5 (1 vote)

See more:

Hi everybody,

I get a problem when I try to export data to excel and send file to client.

C#

string data = hidden_data.Value;
data = HttpUtility.UrlDecode(data);
Response.Clear();
Response.AddHeader("content-disposition", "attachment;filename=Data.xls");
Response.Charset = "UTF-8";
Response.ContentType = "application/excel";
HttpContext.Current.Response.Write(data);
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();

_btnExport.Enabled = false;
radList.Enabled = false;
lblState.Text = "Done";

After transmitting excel file, I want _btnExport and radList to be disabled and lblState to display "Done". I receive excel file and open it normally, but _btnExport and radList are still enabled, lblState display nothing.

Many thanks.

Posted 20-Jan-15 18:38pm

Kaito Nguyen

Updated 20-Jan-15 21:07pm

v3

Add a Solution

Comments

Tejas Vaishnav 21-Jan-15 1:09am

And what type of error you got? can you please explain more..

Kaito Nguyen 21-Jan-15 1:33am

I want _btnExport, radList to be disabled and lblState to display text "Done" after the excel file was transmitted, but nothing's happen (_btnExport and radList are still enabled and lblState display nothing).

Tejas Vaishnav 21-Jan-15 2:26am

You mention in your question that, HttpContext.Current.Response.End() do not work? that means your exported excel file is not actually export to client.. is your excel file is going to exported to client, you can view that file?
And your button and radlist is not going to disabled as you mention in your comment.. that is totally different thing then your question.

Kaito Nguyen 21-Jan-15 2:36am

No. In my question, I mention that "3 code line after (below) HttpContext.Current.Response.End()" do not work. I didn't mean HttpContext.Current.Response.End() do not work.

deepankarbhatnagar 21-Jan-15 2:43am

please elaborate your question

Kaito Nguyen 21-Jan-15 3:09am

I edited my question.

sashje- 21-Jan-15 3:21am

The code running after Response.End will never result in any changes on the clientside, as you send a file. In order to do this, you need to do some clientside scripting, disabling the control on "onclick" or something. The reason is that the file is sent to the client, not the updated html(in which you disabled the button)

Kaito Nguyen 21-Jan-15 3:35am

Thank you so much. I used jquery and it's solved.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Kornfeld Eliyahu Peter · Answer 1 · 2015-01-20T21:23:00

Solution 1

There is no life after Response.End() - https://msdn.microsoft.com/en-us/library/system.web.httpresponse.end.aspx[^]
In your case the only thing sent back to the client is the data containing the excel file...As for your button, it keeps its previous state...

Posted 20-Jan-15 21:23pm

Kornfeld Eliyahu Peter