I have a segment of code that allows for an image to be seen when uploaded but not submitted. However I found that when you hit the upload again and cancel the upload/onchange the image will stay but is actual no longer saved to submit. I wanted it so that when you click upload it sets the element with nothing inside each time and when the upload/onchange is completed the image appear. However it just overrides it and makes it so nothing can be seen
// code for loading photo
var image = document.getElementById('output1');
image.src = URL.createObjectURL(event.target.files[0]);
}
This is the code to clear the element
I had the element ID set to img.output or output1 I have been going back and forth trying to manipulate it but nothing changes both stop the image from showing now
function Empty(elementID){
document.getElementById(elementID).src = "#";
}
This is the element that I wanted to manipulate thats should add the image but always clear when the button is clicked and allow upload when open from the file loader is done.
<p id ="output1"><img id="output" width="200" /></p>
So I am unsure if maybe I am clearing the whole element and that is why it's completely deleting or if its taking precedence on the onclick vs the onchange that happens when you hit open for the upload. I would like more of an explanation of what could be going on with it since I know individually they all work fine but together they interfere.
EDIT:
Someone asked for the full code, there is quite a bit so I posted the sections that involve this part, some of the code is connected to a python file for picture upload which does not need to be changed and works fine even when the image is not seen
forgot to mention using django so that's where the csrf token comes from
<p id ="output1"><img id="output" width="200" /></p>
<form method="post" enctype="multipart/form-data"> <!--Upload Image to media file-->
{%csrf_token%}
<a><input type="file" style="display: none;" accept="image/x-png,image/jpeg" name="image" id="file" onchange="loadFile(event)" required/></a>
<button onclick = "Empty('img.output')" type="button" style="width: 100px; height: 30px; background-color: #008db1; border-radius: 10px; margin-top: 10px; margin-left: 10px;"><label for="file" style="cursor: pointer;">Upload Image</label></button>
<!--Only allow png or jpeg files, so far browse only-->
<button type="BrowseComputer" style="cursor: pointer; width: 100px; height: 30px; background-color: #008db1; border-radius: 10px; margin-top: 10px; margin-left: 10px;">Submit</button>
</form>
<script>
// add a reset to image on upload click & move it
function Empty(elementID){
document.getElementById(elementID).src = "#";
}
var loadFile = function(event) {
var image = document.getElementById('output1');
image.src = URL.createObjectURL(event.target.files[0]);
}
</script>
You are having two errors in your code.
Firstly, when you call the Empty() function, you have set its elementID parameter to img.output, which is not an id. So, you need to change it from img.output to output only.
Secondly, you had used the following code in your JavaScript:
var image = document.getElementById('output1');
image.src = URL.createObjectURL(event.target.files[0]);
Here, you are trying to set the src of the element with id = output. In your HTML, the output1 is actually the <p> element. So, you are trying to set the src of a paragraph! So, change it from
var image = document.getElementById('output1');
to
var image = document.getElementById('output');
The finalized snippet is attached below:
function Empty(elementID) {
document.getElementById(elementID).src = "#";
}
var loadFile = function(event) {
var image = document.getElementById('output');
image.src = URL.createObjectURL(event.target.files[0]);
}
.btn {
cursor: pointer;
width: 100px;
height: 30px;
background-color: #008db1;
border-radius: 10px;
margin-top: 10px;
margin-left: 10px;
}
<p id="output1"><img id="output" width="200" /></p>
<form method="post" enctype="multipart/form-data">
<!--Upload Image to media file-->
{%csrf_token%}
<a><input type="file" style="display: none;" accept="image/x-png,image/jpeg" name="image" id="file" onchange="loadFile(event)" required/></a>
<button onclick="Empty('output')" type="button" class="btn"><label for="file" style="cursor: pointer;">Upload Image</label></button>
<!--Only allow png or jpeg files, so far browse only-->
<button type="BrowseComputer" class="btn">Submit</button>
</form>
I'm pretty new to Javascript, so I'll attempt to ask the question correctly. I'm working with a drag-drop file upload jquery plugin. Currently the html for each file item is brought in externally, in a js file:
var tpl = $('
<li class="working">
<input type="text" value="0" data-width="20" data-height="20"'+ ' data-fgColor="#8dc53e" data-readOnly="1" data-bgColor="#e9eaed" />
Click to add description
<span></span>
<a href="" download id="download-file">
<div class="download"></div>
</a>
</li>
');
The problem I'm having is that I'm trying to add "click to edit text" functionality (i.e. Jeditable), so I can add a file description to each file item. Problem is that the javascript for Jeditable to work is being referenced in the html file itself. And the externalized html is not able reference those js files. How can I reference those js files properly so the externalized html can work?
Things don't really add up, but this is doing what I think you want it to do: https://jsfiddle.net/wqpddqn9/11/
Example HTML
<div class="pane">
<form enctype="multipart/form-data" action="vendor/plugins/form/drag-drop-uploader/upload.php" method="post" id="upload">
<div class="drop-uploader" id="drop"> <span class="drop-text hidden-xs"> Drag & Drop Files <br>
<small>or</small> </span> <a class="btn btn-primary"> Browse Files </a>
<input type="file" multiple="" name="upl">
<ul>
<!-- The file uploads will be shown here -->
<li class="working">
<div>
<canvas height="20px" width="20"></canvas>
<input type="text" data-bgcolor="#e9eaed" data-readonly="1" data-fgcolor="#8dc53e" data-height="20" data-width="20" value="0" readonly="readonly" />
</div>
<a data-title="Click to Add Description" data-url="/post" data-pk="1" data-type="text" id="description" href="#">Click to Add Description.</a>
<p>where-is-everyone.png <i>281.86 KB</i></p>
<span></span>
<a id="download-file" download="" href="#">
<div class="download"></div>
</a>
</li>
</ul>
</div>
<!-- drop -->
</form>
</div>
Example CSS
.working div {
display: inline-block;
width: 20px;
height: 20px;
}
.working input[type='text'] {
width: 2em;
height: 1em;
position: absolute;
vertical-align: middle;
margin-top: 6px;
margin-left: -17px;
border: 0px none;
background: transparent none repeat scroll 0% 0%;
font: bold 14px Arial;
text-align: center;
color: rgb(141, 197, 62);
padding: 0px;
}
Example JQuery
var tpl = '<input type="text" value="0" data-width="20" data-height="20" data-fgColor="#8dc53e" data-readOnly="1" data-bgColor="#e9eaed" /> Save<span></span><div class="download"></div>';
$(document).ready(function() {
$("#description").click(function() {
$(this).next("p").after(tpl);
});
});
Depending on how things load, you may want to add the JQuery to the end of the HTML or switch to .on() like so:
$("#description").on('click', function() {
Since you're adding a Description to this file, I appended the text box into this same List Item (li) just after the file name. not sure if this will fully address the issues since it's not clear what you are encountering or what you want to accomplish. Feel free to comment with more details or edit your post.
If you are using jQuery, then when dynamically adding html elements you might consider using this way to bind onClick events:
$(".element-class").on("click", function(){
//Do your thing with $(this) selector to handle the clicked element
});
This handles dynamically added elements well. Using jQuery might be the simplest solution for you.
Here is the code I have: http://jsfiddle.net/Draven/rEPXM/23/
I'd like to know how I can hide that Add submit button until I click the + image to add input boxes to the form.
I don't want to add the submit button next to the input box because I want to be able to add multiple input boxes and submit them all when I click Add.
HTML
<div id="left">
<div class="box">
<div class="boxtitle"><span class="boxtitleleftgap"> </span><span class="boxtitlebulk"><span class="boxtitletext">Folders</span><div style="float: right; margin-top: 4px;"><div class="addplus"> </div></div></span></div>
<div class="boxcontent">
<form method="post" id="folderform" action="page.php?action=list-volunteer-apps" name="folderform">
<a class="even" href="page.php?action=list-volunteer-apps&folder=2">Folder 2 <span class="text">(1)</span></a><a class="even" href="page.php?action=list-volunteer-apps&folder=1">Folder 1 <span class="text">(0)</span></a>
<div id="foldercontainer"><input type="submit" value="Add"></div>
</form>
</div>
</div>
</div>
jQuery
function AddFolder() {
$('#foldercontainer').append('<input name="folder[]" type="text" size="20" />');
}
Just give the button an ID, and make it start hidden
<input type="submit" id="addButton" value="Add" style="display: none;">
Then use the show() jQuery method:
$("#addButton").show();
http://jsfiddle.net/TcFhy/
Here's a way you could do this... also, cleaned up the method used for making these input boxes a bit:
http://jsfiddle.net/mori57/4JANS/
So, in your html you might have:
<div id="foldercontainer">
<input id="addSubmit" type="submit" value="Add">
<input id="folderName" name="folder[]" type="text" size="20" style="" />
</div>
and your CSS might be:
#foldercontainer #addSubmit {
display:none;
}
#foldercontainer #folderName {
display:none;
width: 120px;
background: #FFF url(http://oi47.tinypic.com/2r2lqp2.jpg) repeat-x top left;
color: #000;
border: 1px solid #cdc2ab;
padding: 2px;
margin: 0px;
vertical-align: middle;
}
and your script could be:
// set up a variable to test if the add area is visible
// and another to keep count of the add-folder text boxes
var is_vis = false,
folderAddCt = 0;
function AddFolder() {
if(is_vis == false){
// if it's not visible, show the input boxes and
$('#foldercontainer input').show();
// set the flag true
is_vis = true;
} else {
// if visible, create a clone of the first add-folder
// text box with the .clone() method
$folderTB = $("#folderName").clone();
// give it a unique ID
$folderTB.attr("id","folderName_" + folderAddCt++);
// and append it to the container
$("#foldercontainer").append($folderTB);
}
}
I moved the button out of the folder wrap, and I am showing it when you add a new folder. This way the button will stay at the bottom when adding new folders. I also removed the inline style, and replaced it with a class.
This is used to display the button, just add it to the AddFolder() function:
$('#addBtn').show();
I am hiding it with CSS like this:
#addBtn { display: none;}
I moved the button out of the #foldercontainer, this way it will always stay at the bottom when you add multiple folders, as you wanted:
<div id="foldercontainer"></div>
<input id="addBtn" type="submit" value="Add">
Look here for the jsFiddle: http://jsfiddle.net/kmx4Y/1/
$('form#folderform input[type=submit]').hide();
Then show the add button after you click the submit
http://jsfiddle.net/SQh8L/
Is there a way to style (or script) <input type=file /> element to have visible only "Browse" button without text field?
Thanks
Edit:
Just to clarify why to I need this. I'm using multi file upload code from http://www.morningz.com/?p=5 and it doesn't need input text field because it never has value. Script just adds newly selected file to collection on page. It would look much better without text field, if it's possible.
<input type="file" id="selectedFile" style="display: none;" />
<input type="button" value="Browse..." onclick="document.getElementById('selectedFile').click();" />
This will surely work as I have used it in my projects.
I was having a heck of a time trying to accomplish this. I didn't want to use a Flash solution, and none of the jQuery libraries I looked at were reliable across all browsers.
I came up with my own solution, which is implemented completely in CSS (except for the onclick style change to make the button appear 'clicked').
You can try a working example here: http://jsfiddle.net/VQJ9V/307/ (Tested in FF 7, IE 9, Safari 5, Opera 11 and Chrome 14)
It works by creating a big file input (with font-size:50px), then wrapping it in a div that has a fixed size and overflow:hidden. The input is then only visible through this "window" div. The div can be given a background image or color, text can be added, and the input can be made transparent to reveal the div background:
HTML:
<div class="inputWrapper">
<input class="fileInput" type="file" name="file1"/>
</div>
CSS:
.inputWrapper {
height: 32px;
width: 64px;
overflow: hidden;
position: relative;
cursor: pointer;
/*Using a background color, but you can use a background image to represent a button*/
background-color: #DDF;
}
.fileInput {
cursor: pointer;
height: 100%;
position:absolute;
top: 0;
right: 0;
z-index: 99;
/*This makes the button huge. If you want a bigger button, increase the font size*/
font-size:50px;
/*Opacity settings for all browsers*/
opacity: 0;
-moz-opacity: 0;
filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0)
}
Let me know if there are any problems with it and I'll try to fix them.
I wasted my day today getting this to work. I found none of the solutions here working each of my scenarios.
Then I remembered I saw an example for the JQuery File Upload without text box. So what I did is that I took their example and stripped it down to the relevant part.
This solution at least works for IE and FF and can be fully styled. In the below example the file input is hidden under the fancy "Add Files" button.
<html>
<head>
<title>jQuery File Upload Example</title>
<style type="text/css">
.myfileupload-buttonbar input
{
position: absolute;
top: 0;
right: 0;
margin: 0;
border: solid transparent;
border-width: 0 0 100px 200px;
opacity: 0.0;
filter: alpha(opacity=0);
-o-transform: translate(250px, -50px) scale(1);
-moz-transform: translate(-300px, 0) scale(4);
direction: ltr;
cursor: pointer;
}
.myui-button
{
position: relative;
cursor: pointer;
text-align: center;
overflow: visible;
background-color: red;
overflow: hidden;
}
</style>
</head>
<body>
<div id="fileupload" >
<div class="myfileupload-buttonbar ">
<label class="myui-button">
<span >Add Files</span>
<input id="file" type="file" name="files[]" />
</label>
</div>
</div>
</body>
</html>
Add a label tag with for attribute assign the for attribute value to the file input button.
Now when you click the label, the browser will open up the file browse dialogue popup automatically.
Note: Hide the file input button using CSS.
Check the live demo below.
$('#imageUpload').change(function() {
readImgUrlAndPreview(this);
function readImgUrlAndPreview(input) {
if (input.files && input.files[0]) {
var reader = new FileReader();
reader.onload = function(e) {
$('#imagePreview').removeClass('hide').attr('src', e.target.result);
}
};
reader.readAsDataURL(input.files[0]);
}
});
.hide {
display: none;
}
.btn {
display: inline-block;
padding: 4px 12px;
margin-bottom: 0;
font-size: 14px;
line-height: 20px;
color: #333333;
text-align: center;
vertical-align: middle;
cursor: pointer;
border: 1px solid #ddd;
box-shadow: 2px 2px 10px #eee;
border-radius: 4px;
}
.btn-large {
padding: 11px 19px;
font-size: 17.5px;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
border-radius: 4px;
}
#imagePreview {
margin: 15px 0 0 0;
border: 2px solid #ddd;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<div clas="file_input_wrap">
<input type="file" name="imageUpload" id="imageUpload" class="hide" />
<label for="imageUpload" class="btn btn-large">Select file</label>
</div>
<div class="img_preview_wrap">
<img src="" id="imagePreview" alt="Preview Image" width="200px" class="hide" />
</div>
Hide the input-file element and create a visible button that will trigger the click event of that input-file.
Try this:
CSS
#file { width:0; height:0; }
HTML:
<input type='file' id='file' name='file' />
<button id='btn-upload'>Upload</button>
JAVASCRIPT(jQuery):
$(function(){
$('#btn-upload').click(function(e){
e.preventDefault();
$('#file').click();}
);
});
I tried to implement the top two solutions, and it ended up being a HUGE waste of time for me. In the end, applying this .css class solved the problem...
input[type='file'] {
color: transparent;
}
Done! super clean and super simple...
That's going to be very hard. The problem with the file input type is that it usually consists of two visual elements, while being treated as a single DOM-element. Add to that that several browsers have their own distinct look and feel for the file input, and you're set for nightmare. See this article on quirksmode.org about the quirks the file input has. I guarantee you it won't make you happy (I speak from experience).
[EDIT]
Actually, I think you might get away with putting your input in a container element (like a div), and adding a negative margin to the element. Effectively hiding the textbox part off screen.
Another option would be to use the technique in the article I linked, to try to style it like a button.
Fix to work in all browsers
RESOLVED:
<input type = "button" value = "Choose image"
onclick ="javascript:document.getElementById('imagefile').click();">
<input id = "imagefile" type="file" style='visibility: hidden;' name="img"/>
I have tested in FF, Chrome & IE - working fine, applied styles too :D
Here is my good ol' remedy:
<input type="file" id="myFile" style="display:none;" />
<button type="button" onclick="document.getElementById('myFile').click();">Browse</button>
At least it worked in Safari.
Plain and simple.
Another easy way of doing this. Make a "input type file" tag in html and hide it. Then click a button and format it according to need. After this use javascript/jquery to programmatically click the input tag when the button is clicked.
HTML :-
<input id="file" type="file" style="display: none;">
<button id="button">Add file</button>
JavaScript :-
document.getElementById('button').addEventListener("click", function() {
document.getElementById('file').click();
});
jQuery :-
$('#button').click(function(){
$('#file').click();
});
CSS :-
#button
{
background-color: blue;
color: white;
}
Here is a working JS fiddle for the same :- http://jsfiddle.net/32na3/
I used some of the code recommended above and after many hours of waisting my time, I eventually came to a css bag free solution.
You can run it over here - http://jsfiddle.net/WqGph/
but then found a better solution - http://jsfiddle.net/XMMc4/5/
<input type = "button" value = "Choose image #2"
onclick ="javascript:document.getElementById('imagefile').click();">
<input id = "imagefile" type="file" style='display:none;' name="img" value="none"/>see jsfiddle code for examples<br/>
You could label an image so when you click on it the click event of the button will be triggered. You can simply make the normal button invisible:
<form>
<label for="fileButton"><img src="YourSource"></label> <!--You don't have to put an image here, it can be anything you like-->
<input type="file" id="fileButton" style="display:none;"/>
</form>
It worked for me on all browsers, and is very easy to use.
You can dispatch the click event on a hidden file input like this:
<form action="#type your action here" method="POST" enctype="multipart/form-data">
<div id="yourBtn" style="height: 50px; width: 100px;border: 1px dashed #BBB; cursor:pointer;" >Click to upload!</div>
<!-- hide input[type=file]!-->
<div style='height: 0px;width:0px; overflow:hidden;'><input id="upfile" type="file" value="upload"/></div>
<input type="submit" value='submit' >
</form>
<script type="text/javascript">
var btn = document.getElementById("yourBtn");
var upfile = document.getElementById("upfile");
btn.addEventListener('click',function(){
if(document.createEvent){
var ev = document.createEvent('MouseEvents');
ev.initEvent('click',true,false);
upfile.dispatchEvent(ev);
}else{
upfile.click();
}
});
</script>
HTML:
<input type="file" name="upload" id="upload" style="display:none"></input>
<button id="browse">Upload</button>
JQUERY
$(document).ready(function(){
$("#browse").click(function(){
$("#upload").click();
});
});
Hope this works :)
This HTML code show up only Upload File button
<form action="/action_page.php">
<input type="button" id="id" value="Upload File" onclick="document.getElementById('file').click();" />
<input type="file" style="display:none;" id="file" name="file" onchange="this.form.submit()"/>
</form>
You can give the input element a font opacity of 0. This will hide the text field without hiding the 'Choose Files' button.
No javascript required, clear cross browser as far back as IE 9
E.g.,
input {color: rgba(0, 0, 0, 0);}
Ive a really hacky solution with this...
<style type="text/css">
input[type="file"]
{
width: 80px;
}
</style>
<input id="File1" type="file" />
The problem is the width attribute that is hiding the text field will obvously vary between browsers, vary between Windows XP themes and so on. Maybe its something you can work with though?...
I know this is an old post but a simple way to make the text dissapear is just to set text color to that of your background.
eg if your text input background is white then:
input[type="file"]{
color:#fff;
}
This will not effect the Choose File text which will still be black due to the browser.
There is a simple and hacky way to show only the file input button while keeping the render and translations of this file input button :
Make the text that is displayed after a file input invisible using a the color transparent.
<input type="file" style="color: transparent" />
my solution is just to set it within a div like "druveen" said, however i ad my own button style to the div (make it look like a button with a:hover) and i just set the style "opacity:0;" to the input. Works a charm for me, hope it does the same for you.
This works for me:
input[type="file"] {
color: white!important;
}
I just styled an input file with width: 85px, and the text field disappeared at all
Select Logo <input type="file" id="logo">
$("#logo").css('opacity','0');
$("#select_logo").click(function(){
$().trigger('click');
return false;
});
For me, the simplest way is using a font color like background color. Simple, not elegant, but usefull.
<div style="color:#FFFFFF"> <!-- if background page is white, of course -->
<input class="fileInput" type="file" name="file1"/></div>
So here's the best way to do this FOR ALL BROWSERS:
Forget CSS!
<p>Append Image:</p>
<input type="button" id="clickImage" value="Add Image" />
<input type="file" name="images[]" id="images" multiple />
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js" charset="utf-8"></script>
<script>
$('#images').hide();
$('#clickImage').click( function() {
$('#images').trigger('click');
});
</script>
All these answers are cute, but CSS won't work since it isn't the same across all browsers and devices, the first answer I wrote will work in everything but Safari. To get it to work accross all browsers all the time it must be created dynamically and recreated every time you want to clear the input text:
var imageDiv = document.createElement("div");
imageDiv.setAttribute("id", "imagediv");
imageDiv.style.cssText = 'position:relative; vertical-align: bottom;';
var imageText = document.createTextNode("Append Image:");
var newLine = document.createElement("br");
var image = document.createElement("input");
image.setAttribute("type", "file");
image.setAttribute("id", "images");
image.setAttribute("name", "images[]");
image.setAttribute("multiple", "multiple");
imageDiv.appendChild(imageText);
imageDiv.appendChild(newLine);
imageDiv.appendChild(image);
questionParagraph.appendChild(imageDiv);
The answer of tmanthey is quite good, except that you can't play with border-width in Firefox v20. If you see the link (demo, can't really show here) they solved the problem using font-size=23px, transform:translate(-300px, 0px) scale(4) for Firefox to get the button bigger.
Other solutions using .click() on a different div is useless if you want to make it a drag'n'drop input box.
There are several valid options here but thought I would give what I have come up with while trying to fix a similar issue. http://jsfiddle.net/5RyrG/1/
<span class="btn fileinput-button">
<span>Import Field(s)</span>
<input id="fileupload" type="file" name="files[]" onchange="handleFiles(this.files)" multiple>
</span>
<div id="txt"></div>
function handleFiles(files){
$('#txt').text(files[0].name);
}
I wrote this:
<form action='' method='POST' name='form-upload-image' id='form-upload-image' enctype='multipart/form-data'>
<div style="width: 0; height: 0; overflow: hidden;">
<input type="file" name="input-file" id="input-file" onchange="this.files.length > 0 ? document.getElementById('form-upload-image').submit():null;" />
</div>
</form>
<img src="image.jpg" style="cursor: pointer;" onclick="document.getElementById('input-file').click();" />
Work fine in all browsers, no jQuery, no CSS.
Here is a simplified version of #ampersandre's popular solution that works in all major browsers.
Asp.NET markup
<asp:TextBox runat="server" ID="FilePath" CssClass="form-control"
style="float:left; display:inline; margin-right:5px; width:300px"
ReadOnly="True" ClientIDMode="Static" />
<div class="inputWrapper">
<div id="UploadFile" style="height:38px; font-size:16px;
text-align:center">Upload File</div>
<div>
<input name="FileUpload" id="FileInput" runat="server"
type="File" />
</div>
</div>
<asp:Button ID="UploadButton" runat="server"
style="display:none" OnClick="UploadButton_Click" />
</div>
<asp:HiddenField ID="hdnFileName" runat="server" ClientIDMode="Static" />
JQuery Code
$(document).ready(function () {
$('#UploadFile').click(function () {
alert('UploadFile clicked');
$('[id$="FileInput"]').trigger('click');
});
$('[id$="FileInput"]').change(function (event) {
var target = event.target;
var tmpFile = target.files[0].name;
alert('FileInput changed:' + tmpFile);
if (tmpFile.length > 0) {
$('#hdnFileName').val(tmpFile);
}
$('[id$="UploadButton"]').trigger('click');
});
});
css code
.inputWrapper {
height: 38px;
width: 102px;
overflow: hidden;
position: relative;
padding: 6px 6px;
cursor: pointer;
white-space:nowrap;
/*Using a background color, but you can use a background image to represent
a button*/
background-color: #DEDEDE;
border: 1px solid gray;
border-radius: 4px;
-moz-user-select: none;
-ms-user-select: none;
-webkit-user-select: none;
user-select: none;
}
Uses a hidden "UploadButton" click trigger for server postback with standard . The with "Upload File" text pushes the input control out of view in the wrapper div when it overflows so there is no need to apply any styles for the "file input" control div. The $([id$="FileInput"]) selector allows section of ids with standard ASP.NET prefixes applied. The FilePath textbox value in set from server code behind from hdnFileName.Value once file is uploaded.