Child window refresh

1. Add a Script Manager control to your child page (if it is not already there).
2. Now you can add two methods in your page : pageLoad() that runs when the page is loaded. and pageUnload() which runs when the page is closed.

3. In Parent document, Add a hidden input control like :

<input type="hidden" id="inpRefresh" value="0" />

4 In Child Page also add a hidden input control as follows :

<input type="hidden" id="inpRefreshParent" value="0" />

5. In child window page (aspx) , add javascript function "pageUnload" and in that, set a flag like value in parent document's hidden control as follows ,
<script type="test/javascript">

function pageUnload()
{
parent.document.getElementById('inpRefresh').value = document.getElementById('inpRefreshParent').value;

}
</script>

Now in the child page's server side method where you are doing some data saving operation, set value of this hidden input to '1'.

e.g. inpRefreshParent.Value = "1";

6. In parent page, say on a button click you are opening the child window.
Then that function should be like this :

function ShowChildPage()
{
window.showModalDialog( ChildPageurl, arguments, feature options);
if(document.getElementById('inpRefresh').value == '1')
{
document.getElementById('inpRefresh').value = '0';//reset the value
return true; //this will execute server side click event of the button //which you can reload the data
}
else
{
return false;
}
}

The code for the button that will open the child page will be like this:

<asp:button runat="server" id="btnShow" onclientclick="javascript:return ShpwChildPage();" onclick="btnShow_Click" xmlns:asp="#unknown" />


and the server side click event handler will be like this :

protected void btnShow_Click(object sender,EventArgs e)
{
//Reload data
}


Hope this helps you :)