linkbutton in a listview with a CommandArgument

I'm using VS 2010, vb.net, .net 4.
I have a list view that holds a asp:linkbutton in an asp:tablecell.  The problem is that the command argument is not the right value.
 
<asp:LinkButton ID="lbICS" runat="server" CommandName="cmdICS" CommandArgument='<%# eval("tblCalendarID")%>' Text='<%# eval("tblCalendarID").ToString %>'/>

when you look at it, you'll see that the command arguement and the text are bound to the same property.   My text property reads 386, but when i click on the 386 text, the _ItemCommand event fires.   when i do an e.CommandArgument, the value is 46. I don't understand what i'm doing wrong.
Protected Sub lvCalendar_ItemCommand(ByVal sender As Object, ByVal e As System.Web.UI. ...