fileupload contol problem in asp.net

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heyy .. I am using a fileupload contol..My problem is when I select the file from file upload and after that I clicked a button ..then my upload file path showing in fileupload control is disappear....

plz tell me what to doo..?

Posted 7-Jan-13 23:42pm

aravindnass

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Zafar Sultan 8-Jan-13 6:03am

Post your code.

aravindnass 8-Jan-13 6:13am

<asp:FileUpload ID="fluNoticeUpload" runat="server" CssClass="textbox" />

and a button is used in another purpose

Zafar Sultan 8-Jan-13 6:18am

Are you using updatepanel? Also, what is the code for button's onclick event?

aravindnass 9-Jan-13 0:57am

not using updatepanel...but my button is for another purpose(I have separate button for fileupload) ..My problem is ..when I select the file in fileupload and click a button (it is place for other purpose..not for file uploading..) so that button cause prblm..the selected file is disappear...

Pallavi Waikar 8-Jan-13 6:10am

is that button is server control i.e

aravindnass 9-Jan-13 4:18am

I read a article in code project ie.("How to Maintain FileUpload Control’s State after PostBack") in that I tried its working....but in that a label1 is used to show that file path....But I want show the filepath not in the label,but show on the fileupload ctrl
http://www.codeproject.com/Tips/101834/How-to-Maintain-FileUpload-Control-s-State-after-P

ZurdoDev 8-Jan-13 7:58am

Your button is likely doing a postback and your losing the file. Why are you clicking a button?

aravindnass 9-Jan-13 0:08am

I hava a button near to fileupload ctrl..but that button is used for other purpose
...it is not related with file upload ctrl..but both are in same page..

aravindnass 9-Jan-13 4:18am

I read a article in code project ie.("How to Maintain FileUpload Control’s State after PostBack") in that I tried its working....but in that a label1 is used to show that file path....But I want show the filepath not in the label,but show on the fileupload ctrl
http://www.codeproject.com/Tips/101834/How-to-Maintain-FileUpload-Control-s-State-after-P

aravindnass 9-Jan-13 4:18am

I read a article in code project ie.("How to Maintain FileUpload Control’s State after PostBack") in that I tried its working....but in that a label1 is used to show that file path....But I want show the filepath not in the label,but show on the fileupload ctrl
http://www.codeproject.com/Tips/101834/How-to-Maintain-FileUpload-Control-s-State-after-P

Pallavi Waikar 9-Jan-13 5:53am

i go through the FileUpload properties there not any such property to which u can set filepath to it.....it is server control that's why on page reload browse filename is not present on control

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Sandeep Mewara · Answer 1 · 2013-01-08T05:17:00

Solution 1

.then my upload file path showing in fileupload control is disappear....
That's as designed as per fileupload control. The filepath is not retained through postbacks.

Posted 8-Jan-13 5:17am

Sandeep Mewara

Comments

aravindnass 9-Jan-13 0:56am

but my button is for another purpose(I have separate button for fileupload) ..My problem is ..when I select the file in fileupload and click a button (it is place for other purpose..not for file uploading..) so that button cause prblm..the selected file is disappear...

Sandeep Mewara 9-Jan-13 1:06am

Button does a postback and hence the fileupload control looses the path. If you want to keep fileupload out of it, try XMLHttepRequest on button click from client side instead of server submit or see if using Update panel around button and related controls help (fileupload outside update panel)

aravindnass 9-Jan-13 4:17am

I read a article in code project ie.("How to Maintain FileUpload Control’s State after PostBack") in that I tried its working....but in that a label1 is used to show that file path....But I want show the filepath not in the label,but show on the fileupload ctrl
http://www.codeproject.com/Tips/101834/How-to-Maintain-FileUpload-Control-s-State-after-P

Sandeep Mewara 9-Jan-13 5:18am

If you understand why it is happening, you will know what you 'want' is not correct and you need to design properly to avoid such scenario.

rahulkasar · Answer 2 · 2013-01-08T05:46:00

Solution 2

Add an update panel and set a postback trigger to the button on which you are uploading the file

e.g :-

XML

<asp:UpdatePanel ID="UpdatePanel" runat="server">
<Triggers><asp:PostBackTrigger ControlID="btnUpload" /></Triggers>
    <ContentTemplate>
 <asp:FileUpload ID="FileUploadControl" EnableViewState="true" runat="server" />
                                    <asp:Button ID="btnUpload" runat="server" Text="Upload" OnClick="btnUpload_Click"
                                        CssClass="inputButton" />

    </ContentTemplate>
</asp:UpdatePanel>

Thanks,

Posted 8-Jan-13 5:46am

rahulkasar

Comments

aravindnass 9-Jan-13 0:56am

but my button is for another purpose(I have separate button for fileupload) ..My problem is ..when I select the file in fileupload and click a button (it is place for other purpose..not for file uploading..) so that button cause prblm..the selected file is disappear...

aravindnass 9-Jan-13 4:17am

I read a article in code project ie.("How to Maintain FileUpload Control’s State after PostBack") in that I tried its working....but in that a label1 is used to show that file path....But I want show the filepath not in the label,but show on the fileupload ctrl

aravindnass 9-Jan-13 4:17am

http://www.codeproject.com/Tips/101834/How-to-Maintain-FileUpload-Control-s-State-after-P

Zafar Sultan · Answer 3 · 2013-01-08T20:47:00

Solution 3

Whenever a postback is performed on a page, the fileupload control loses its state. That said you can not make it hold your file after postback. That is its behaviour by default. Add the following code in Page Load event and try.

C#

if (Session["UploadedFile"] == null && FileUpload1.HasFile) 
Session["UploadedFile"] = FileUpload1;
else if (Session["UploadedFile"] != null && (! FileUpload1.HasFile)) 
FileUpload1= (FileUpload) Session["UploadedFile"]; 
else if (FileUpload1.HasFile) 
Session["UploadedFile"] = FileUpload1;

Posted 8-Jan-13 20:47pm

Zafar Sultan

Comments

aravindnass 9-Jan-13 4:16am

I read a article in code project ie.("How to Maintain FileUpload Control’s State after PostBack") in that I tried its working....but in that a label1 is used to show that file path....But I want show the filepath not in the label,but show on the fileupload ctrl

aravindnass 9-Jan-13 4:17am

http://www.codeproject.com/Tips/101834/How-to-Maintain-FileUpload-Control-s-State-after-P