show fileupload control when dropdown option click

script with some improvements: 

Can you inspect the HTML source code of your page in the browser and look for the actual IDs of the FileUpload  control.Then, you can update your jQuery code to use the actual IDs instead of the client IDs.

Thanks

Naimish Makwana

Already added jquery library but still not works

  Yes
    No

Make sure you have included the jQuery library in your ASPX page before your script tag. You can include it by adding the following code in your head section:

Naimish Makwana

I am trying this way but Not working

  Yes
    No

Hello Garima,

You can achieve this functionality using jQuery. Here is an example:

First, give an ID to your fileupload control, like this:

Then, add a script tag in your ASPX page and write the following jQuery code inside it:

Thanks

Naimis Makwana