I cannot get the Drag and Drop functionality of Web Parts is to work.  I have a very simple test page with two WebPartZones.  .  In the OnInit method of the code behind I put the page in design mode.  In the first zone I have a textbox.
At runtime the text box renders as a web part.    When I hover over the web part header my mouse pointer changes the ‘move’ pointer, but I cannot drag the item.  I do not see it dragging and the part never moved.

I am using Visual Studio 2010 with IE 8.  I have tried IE8 in compatibility mode and regular mode.  The results are the same.

Here is the markup from my test page:
<form id="form1" runat="server">
<div>
   
    <asp:WebPartManager ID="WebPartManager1" runat="server">
    </asp:WebPartManager>

       
    <asp:WebPartZone ID="LEFT" runat="server">
        <ZoneTemplate>
            <asp:TextBox ID="tb" runat="server" />
        </ZoneTemplate>
    </asp:WebPartZone>
    aa
    <asp:WebPartZone ID="RIGHT" runat="server">
    </asp:WebPartZone>
    aa
    <asp:EditorZone ID="EditorZone1" runat="server">
    </asp:EditorZone>
   
   
</div>
</form>

Here is the code behind:
protected override void OnInit(EventArgs e)
{
    base.OnInit(e);
    WebPartManager mgr = WebPartManager.GetCurrentWebPartManager(this);
    mgr.DisplayMode = WebPartManager.DesignDisplayMode;
}

What am I missing?

Thanks,
   Don

I'm not sure but try to set the display mode at Page_Load event instead.

Hi,

You've posted the same thread in forum. Check this:

http://forums.asp.net/t/1654654.aspx