How to upload and download a file
<p>I like to upload an file in my project. when I click the upload button the file should be stored in client system and the file name and path should be stored in the database. When I clicking the download button it should be downloaded based on the file name and path that I have stored in the database. After making the changes it should be uploaded as different file name and it will not affect the previous file content. If there is any code for this process please send it to me.</p>

<p>Thanks in advance</p>
