Page Refresh Issue (F5)
<p>I have a page on which i have only one TextBox say <strong>Comments</strong> and <strong>Post Comment</strong> Button.</p>

<p>Now during input user write something in Comments textbox and press Post Comment button. Whatever is written in the textbox all get stored in database and i clear the textbox with</p>

<pre><code>textbox.text = string.empty statement.
</code></pre>

<p>After this user press F5 without doing anything and the same comment which i have already cleared gets stored in the database again. I want to keep track of this thing that when button event is fired on F5 should not do anything. please help in this.</p>
