File upload control not working inside update panel.

Question

3.00/5 (1 vote)

See more:

In a update panel, I am displaying a gridview, and div body which is invisibe unless add button is clicked. On add button click event the controls in the div tag will be made visible. This div body has some textboxes,dropdown lists, 2 file upload controls, 2 calender controls.Problem faced:
1. On selecting the calender date, the top upload controls fields are getting cleared.
2. Tried changing the upload controls to bottom, but in codebehind uploadcontrol.hasfile is always getting null.
3. tried setting postback trigger to the upload control. but the page is displayed blank.
4. gone through iframes solution,but found complex to understand
5. tried placing seperate button to upload. but in codebehing btn.hasfile returns false

Posted 9-Jun-11 9:27am

adulapuramrajesh

Add a Solution

5 solutions

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)

thatraja · Answer 1 · 2011-06-09T18:15:00

Solution 1

This bunch has the trick.

Simple AJAX File Upload[^]

File Upload not working with update panel[^]

FileUpload in an Ajax UpdatePanel[^]

FileUpload control inside an UpdatePanel without refreshing the whole page?[^]

FileUpload is not working within update panel[^]

Posted 9-Jun-11 18:15pm

thatraja

awaisdar · Answer 2 · 2011-09-26T01:16:00

Solution 2

just add the following code into your application.
that will cuse the panel to postback and eventuly the fileupload control will strat working.

C#

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="conditional">
 <Triggers>
  <asp:PostBackTrigger ControlID="Button1" />
 </Triggers>

Posted 26-Sep-11 1:16am

awaisdar

Updated 11-Dec-11 17:10pm

v2

devildx2050 · Answer 3 · 2011-09-27T02:37:00

Solution 3

yup i will also try that but FileUpload.HasFile always return false;
when i placed FileUpoad control inside a update panel...

Posted 27-Sep-11 2:37am

devildx2050

kiran34901 · Answer 4 · 2012-05-23T21:13:00

From :

XML

http://knowledgebaseworld.blogspot.in/2009/02/file-upload-not-working-with-update.html


In problem definition we come to know that form must be encoded with multipart/form-data if we want to upload the file; solution is very simple, we just need to change encoded attribute of form with following single line!!!

Page.Form.Attributes.Add("enctype", "multipart/form-data");

Jhone · Answer 5 · 2012-08-15T13:07:00

Solution 5

Al ready tried this does not work at all,
any idea why?
Thanks

Posted 15-Aug-12 13:07pm

Jhone

Comments

[no name] 15-Aug-12 20:18pm

How exactly is this an answer to this over year old question?