dynamically display current month

I need to display the current month (right now it should display 9) in a drop down list. How would I modiy this existing code to display the current month?

<font face="Verdana" size="2">Month: <asp:DropDownList ID="Mth" Runat="server">
      <asp:ListItem Value="1"></asp:ListItem>
      <asp:ListItem Value="2"></asp:ListItem>
      <asp:ListItem Value="3"></asp:ListItem>
      <asp:ListItem Value="4"></asp:ListItem>
      <asp:ListItem Value="5"></asp:ListItem>
      <asp:ListItem Value="6"></asp:ListItem>
      <asp:ListItem Value="7"></asp:ListItem>
      <asp:ListItem Value="8"></asp:ListItem>
      <asp:ListItem Value="9"></asp:ListItem>
      <asp:ListItem Value="10"></asp:ListItem>
      <asp:ListItem Value="11"></asp:ListItem>
      <asp:ListItem Value="12"></asp:ListItem>
</asp:DropDownList>

At the end of every month it should automatically display the next month (10, 11, 12....etc.)

Thanks