I am trying to use CKEditor4.01 which happens to be a client side control. CKEditor displays properly with toolbar and other customizations. so far so good. However, the issue is with setting/getting data to/from CKEditor. I would be getting data that I need to set in my CKEditor from code behind file. Since CKEditor I am using is a client side, I would not be able to access it in my code behind file. How do I set data in CKEditor?
In some examples I see we can set data in <textarea></textarea> but since textarea also doesn't have a runat ="server" tag attached, I would not be able to access it from code behind nor can I set data between <textarea></textarea> tags.
Please help

This sounds more like "how do
This sounds more like "how do I make a web application?" type question than it does anything specific to CKEditor. You need a server-side application solution such as PHP. In PHP you might do something like:
<html>
<body>
<form action="receiver.php">
<textarea name="ta" id="ta"><?php echo file_get_contents('filename.txt'); ?></textarea>
<input type="submit" value="SAVE"/>
</form>
<script src="ckeditor.js"></script>
<script>
CKEDITOR.replace('ta');
</script>
</body>
</html>
Then you would need to write receiver.php to receive and save the contents that were edited like so:
<?php
file_put_contents('filename.txt', $_POST['ta']);
?>