Hi ,when i try to databind the '<%#Eval("EntryID") %>'  to the ImageButton's postbackurl as 

<asp:ImageButton ID="ibtnEdit" runat="server" CommandName="Edit" CommandArgument='<%#DataBinder.Eval(Container.DataItem,"SystemEmailID")%>'
  ImageUrl="~/Images/edit-list.gif" PostBackUrl="~/Edit_SyatemEmails.aspx?blogentry=edit&id=<%#DataBinder.Eval(Container.DataItem,"SystemEmailID")%>"/>

it's failed, then i updated the code to

 <asp:ImageButton ID="ibtnBlogEntryEdit" PostBackUrl='"~/admin/BlogEntry.aspx?blogentry=edit&entryid=" & <%# Eval("EntryID") %>' SkinID="edit" runat="server" />

 well,the above code has pass the debugging,but failed to databind to the postbackurl,the result as  

http://localhost/dovoshow/"~/admin/BlogEntry.aspx?blogentry=edit&entryid="%20&%20<%#%20Eval("EntryID")%20%>

so,anyonw know how to solve it ,help me  thanks