I am using the ModalPopupExtender control to display a modal popup dialog when a button is click. The problem is that dragging the dialog results in an 'scrollleft is null or not an object' error.
Here's a video demo
..and here is ALL the code:
If possible, I'd like to resolve this problem w/o resorting to modifying the AjaxToolkit scripts themselves.
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="MyModalSimple.aspx.vb" Inherits="MyModalSimple" %>
<%@ 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">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style type="text/css">
.modalBackground
{
background-color: Gray;
filter: alpha(opacity=70);
opacity: 0.7;
}
</style>
<link href="Default.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
function onOk() {
//form1.submit();
}
</script>
<script type="text/javascript">
var clientid;
function fnSetFocus(txtClientId) {
clientid = txtClientId;
setTimeout("fnFocus()", 1000);
}
function fnFocus() {
//debugger;
if (document.getElementById("pnlModal").style.display != "none")
eval("document.getElementById('" + clientid + "').focus()");
}
function fnClickOK(sender, e) {
__doPostBack(sender, e);
}
</script>
</head>
<body>
<form id="form1" runat="server">
<br />
Clicking the button will bring up the modal dialog<br />
<br />
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<br />
<asp:Button ID="Button1" runat="server" Text="Button" />
<cc1:ModalPopupExtender ID="Button1_ModalPopupExtender" runat="server" TargetControlID="Button1"
PopupDragHandleControlID="programmaticPopupDragHandle" PopupControlID="pnlModal"
OkControlID="btnOK" CancelControlID="btnCancel" DropShadow="true" OnOkScript="onOk();"
BackgroundCssClass="modalBackground">
</cc1:ModalPopupExtender>
<br />
<asp:Panel ID="pnlModal" runat="server" Style="display: None" BackColor="#CCCCCC">
<asp:Panel runat="Server" ID="programmaticPopupDragHandle" Style="cursor: move; background-color: #DDDDDD;
border: solid 1px Gray; color: Black; text-align: center;">
Caption
</asp:Panel>
<br />
<table>
<tr>
<td>
<asp:Label ID="lblFirst" runat="server" Text="First"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtFirst" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="lblLast" runat="server" Text="Last"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtLast" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
</td>
<td align="right">
<asp:Button ID="btnOK" runat="server" Text="OK" />
<asp:Button ID="btnCancel" runat="server" Text="Cancel" />
</td>
</tr>
</table>
</asp:Panel>
<asp:Label ID="lblMessage" runat="server"></asp:Label>
<br />
<br />
</div>
</form>
</body>
</html>
Partial Class MyModalSimple
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not Page.IsPostBack Then
Button1.Attributes.Add("onclick", "fnSetFocus('" + txtFirst.ClientID + "');")
btnOK.OnClientClick = String.Format("fnClickOK('{0}','{1}')", btnOK.UniqueID, "")
End If
End Sub
Protected Sub btnOK_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnOK.Click
lblMessage.Text = "Hi, " & txtFirst.Text & " " & txtLast.Text
End Sub
End Class