Javascript Function for Closing any popup window.
ASPX CODE
<script language="javascript" type="text/javascript">
function GetRadWindow()
{
var oWindow = null;
if (window.radWindow) oWindow = window.radWindow;
else if (window.frameElement.radWindow) oWindow = window.frameElement.radWindow;
return oWindow;
}
function CancelEdit()
{
GetRadWindow().Close();
GetRadWindow().BrowserWindow.location.reload();
return false;
}
onclick="javascript: CancelEdit();"
[u can use it on aspx as shown here or severside as shown below]
CS CODE
protected void btnClose_Click(object sender, EventArgs e)
{
Session[GlobalCommon.KEY_CITY_EDIT] = null;
RadAjaxPanel1.ResponseScripts.Add("CancelEdit();");
}