I've got an ASP.NET 3.5 web app where I am trying to return a string from a child window to a parent window. It works in FF, Chrome, and Safari, but IE is a different story. In IE, it works the first time through but when reopening the child and passing another string, the parent page hangs in the middle of the PostBack.
For the parent window ascx, I have the following:
<script type="text/javascript">
function openMediaManager() {
// This is called to open the child window.
window.open('/mediamanager.aspx', 'mediamanager', 'width=685, height=530');
}
function setImagePath(img) {
// This is called by the child window to pass the string to the parent.
<asp:Literal ID="NewImgPostBack" runat="server" />
}
</script>
And a snippet from the code behind to generate the __doPostBack() call:
protected override void Render(HtmlTextWriter writer)
{
// Not using the Button's OnClick because I have to use FindControl() to get the button.
string postBack = Page.ClientScript
.GetPostBackEventReference(MediaManagerButton, string.Empty)
.Replace("''", "{0}");
NewImgPostBack.Text = string.Format(postBack, "img");
base.Render(writer);
}
In the child ascx, I am calling the the following function with a path to a file (example: "/image.png"):
<script type="text/javascript">
function sendValueToParent(path) {
// Called by the child to pass a string (path to an image) to the parent.
window.opener.setImagePath(path);
window.close();
}
</script>
Any ideas why this would hang in IE only? I am using IE 7, but I have also read of the same problem in IE 6 (which most of the end users will have).
A reference to a similar problem: Why does Internet Explorer 7 hang bizarrely when child window scripts the parent window to submit?
EDIT
If I view source of the parent (child has already closed) while the page seems to hang in IE, I see the following:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><title>title
</title><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" /><link id="ctl00_SiteStyle" rel="stylesheet" type="text/css" href="/App_Themes/20/css/a.css?v=3.0.0.1" />
<script type="text/javascript" src="/javascript/_common.js"></script>
<script type="text/javascript" src="/javascript/_calendar.js"></script>
</head>
<body>
<form name="aspnetForm" method="post" action="/home.aspx" id="aspnetForm">
<div>
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" />
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="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
(End)
Do you think this could be some ViewState issue? Sometimes when I leave the IE window open, after about 5 minutes, it seems to time out and loads a page with no styling.