Hi stephenb3,
To popup the panel automaticly after the Ayncpostback return,Just do it as follow:
<%@ Page Language="VB" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Label1.Text = DateTime.Now.ToString()
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="always">
<ContentTemplate>
<asp:Panel ID="Panel1" onscroll="javascript:saveScroll();" runat="server" Height="50px" Width="125px" Style="position: static;
overflow: scroll; height: 350px; border: solid 1px blue; background-color: White;
display: none;">
<table border="0" cellpadding="0" cellspacing="0" width="480px">
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
</table>
<asp:Button ID="Button3" runat="server" Text="Button" />
</asp:Panel>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
<asp:Button ID="Button2" runat="server" Text="Button" />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<cc1:ModalPopupExtender ID="ModalPopupExtender1" runat="server" PopupControlID="Panel1"
CancelControlID="Button3" TargetControlID="Button2">
</cc1:ModalPopupExtender>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
<script type='text/javascript'>
var scrollLeft = 0;
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
function EndRequestHandler(sender, args) {
document.getElementById('Button2').click();
setScroll();
}
function setScroll()
{
document.getElementById('<%= Panel1.ClientID %>').scrollLeft = scrollLeft;
}
function saveScroll()
{
scrollLeft = document.getElementById('<%= Panel1.ClientID %>').scrollLeft;
}
</script>
</body>
</html>
The code hit you need is:
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
function EndRequestHandler(sender, args) {
document.getElementById('Button2').click();
}
You can check this post for more information:ModalPopupExtender panel scroll position
You are not merely able to popup the panel automaticly after the Ayncpostback return,You also can maintain the scrollTop/scrollLeft of the panel.
Best Regards