Onselectedindexchanged is firing
<p>In grid row command event I am calling a <code>.ascx</code> page as a popup.</p>

<p>In the popup I have one button, on clicking the button, I'm calling one more popup.</p>

<p>Under the second popup I have four dropdown controls, in the dropdown controls I'm filtering and filling the data one after another.</p>

<p>The problem here is, if I filter the third dropdown, the second dropdown field data is getting reset(Onselectedindexchanged is firing).</p>
