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Editorial Team
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Asked: 2026-05-23T18:39:28+00:00

Possible bug with AJAX futures drag and drop functionality in chrome: <head runat=server> <title></title>

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Possible bug with AJAX futures drag and drop functionality in chrome:

<head runat="server">
    <title></title>
    <script type="text/javascript">

        function pageLoad() {
            var source1 = new Custom.UI.ColorDragSourceBehavior($get("1"), "1");
            source1.initialize();
            var source2 = new Custom.UI.ColorDragSourceBehavior($get("2"), "2");
            source2.initialize();
      }

    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div style="width:200%;">
        <asp:ScriptManager ID="ScriptManager1" runat="server">
            <Scripts>
                <asp:ScriptReference Name="PreviewScript.js" Assembly="Microsoft.Web.Preview" />
                <asp:ScriptReference Name="PreviewDragDrop.js" Assembly="Microsoft.Web.Preview" />
                <asp:ScriptReference Path="~/Scripts/ColorDragDrop.js" />
            </Scripts>
        </asp:ScriptManager>
        <div id="1" style="float:left; width:30px; height:30px; background-color:Blue;">Left</div>
        <div id="2" style="float:right;width:30px; height:30px; background-color:Blue;">Right</div>
    </div>    
    </form>
</body>
</html>

ColorDragDrop.js is available here:

Scroll to right and click on right division and the window auto scrolls back to the left.

There are a couple of mentions of this on the web but no solutions so I thought I’d ask here. I’m under a tight deadline and would rather not have to re-implement the drag and drop using jQuery or similar so any help gratefully received.

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1 Answer

  1. Editorial Team

    I found a 3 line hack here:

    http://www.targetprocess.com/agileproductblog/2009/03/aspnet-20-ajax-safari-and-scroll-offset.html

    if (Sys.Browser.agent === Sys.Browser.Safari) {
    Sys.Preview.UI.DragDropManager._getInstance().getScrollOffset =
                Sys.Preview.UI.IEDragDropManager.prototype.getScrollOffset
    Sys.Preview.UI.DragDropManager._getInstance()._autoScroll = function() { }
}

    works for safari and chrome.

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