First of all your
Labels
Text property should be declared...
Instead of...
<asp:Label runat="server" ID="lblID"> <%# Eval("JobID") %> </asp:Label>
Do like...
<asp:Label runat="server" ID="lblID" Text='<%# Eval("JobID") %>'></asp:Label>
Then inside the
ItemCommand
Event, you can code like below to get the Control.
Label LabelEmail = (Label)e.Item.FindControl("lblID");