Question

I’m trying to redirect from child page to parent page with this javascript:

ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "Close", "ClosePopUp();", true); 


<script language="javascript" type="text/javascript">
    function ClosePopUp() {
        window.opener.location= 'ParentPage.aspx';
        self.close();
    }

</script>

It works with Firefox & Chrome. But not with IE 9.
The error I’m getting is:

Unable to get value of the property 'location': object is null or undefined

alert(window.opener) returns null in IE 9.

Answer 1

window.opener is a non-standard property and is not available in all browsers. It will also evaluate to null if the window wasn’t opened from another window, so it seems pretty unreliable.