I have problem with positioning ModalPopupExtender in the center of the screen when it's PopupDragHandleControlID property is set (without this property it works fine ).
ModalPopupExtender is not positioned in the center of the screen. I thinks what causes the problem is the page's CSS layout cause when i disable it, popup positioned in the center of the screen (I don't understand why page's css affects ModalPopupExtender only when it's PopupDragHandleControlID property is set )
The page:
<!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>Untitled Page</title>
<link href="layout.css" rel="stylesheet" type="text/css" />
</head>
<body>
<form id="form1" runat="server">
<div>
<div id="header">
</div>
<div id="container">
<div id="center" class="column">
<div id="centercolcontent" class="centercolcontent">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" >
<ContentTemplate>
<asp:Button ID="btnShowPopup" runat="server" Text="Open" />
<asp:Panel ID="pnlUploader" runat="server" CssClass="pnlUploader" style="display: none;">
<cc1:ModalPopupExtender ID="mdlPopup1" runat="server" TargetControlID="btnShowPopup"
PopupControlID="pnlUploader" CancelControlID="btnCancel"
BackgroundCssClass="modalBackground"
PopupDragHandleControlID="pnlUploader" RepositionMode="RepositionOnWindowResize" />
<div id="pnlDragMe" class="pnlDragMe">
Image Uploader
</div>
<div class="upload" id="upload">
<div id="status" class="info">
Please select a file to upload
</div>
<div class="commands">
<asp:Button ID="btnUpload" runat="server" Text="Upload"
OnClientClick="javascript:onUploadClick()" />
<asp:Button ID="btnCancel" runat="server" Text="Cancel" />
</div>
</div>
</asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</div>
</div>
<div id="left" class="column">
</div>
<div id="right" class="column">
</div>
<div id="footer">
</div>
</div>
</form>
</body>
</html>The CSS:
body
{
min-width: 630px;
}
#container
{
padding-left: 200px;
padding-right: 150px;
}
#container .column
{
position: relative;
float: left;
}
#center
{
padding: 0px 0px;
width: 100%;
}
#left
{
width: 200px;
padding: 0 0px 0 0;
right: 200px;
margin-left: -100%;
}
#right
{
width: 130px;
padding: 0 10px;
margin-right: -100%;
}
#footer
{
clear: both;
}
* html #left
{
left: 150px; /* RC fullwidth */
}
/*** Equal-height Columns ***/
#container
{
overflow: hidden;
}
#container .column
{
padding-bottom: 1001em; /* X + padding-bottom */
margin-bottom: -1000em; /* X */
}
* html body
{
overflow: hidden;
}
* html #footer-wrapper
{
float: left;
position: relative;
width: 100%;
padding-bottom: 10010px;
margin-bottom: -10000px;
background: #FFF; /*** Same as body background ***/
}
body
{
margin: 0;
padding: 0;
}
#header, #footer
{
font-size: large;
text-align: center;
padding: 0.3em 0;
}
#left
{
/*background: #66F;*/
}
#center
{
background: #DDD;
}
.modalBackground
{
background-color: Gray;
filter: alpha(opacity=70);
opacity: 0.7;
}