In this topic you will add some list items to a drop-down list which will later become a combo box.

1. In your Web application, add a standard DropDownList control to the main content of  your page.
2. Add some ListItems for the dropdown list. For example:

<asp:DropDownList ID="DropDownList1" runat="server">

        <asp:ListItem Value="c++" Text="c++"></asp:ListItem>

         <asp:ListItem Value="java" Text="java"></asp:ListItem>

         <asp:ListItem Value="php" Text="php"></asp:ListItem>

         <asp:ListItem Value="coldfusion" Text="coldfusion"></asp:ListItem>

         <asp:ListItem Value="javascript" Text="javascript"></asp:ListItem>

         <asp:ListItem Value="asp" Text="asp"></asp:ListItem>

         <asp:ListItem Value="ruby" Text="ruby"></asp:ListItem>

         <asp:ListItem Value="python" Text="python"></asp:ListItem>

         <asp:ListItem Value="c" Text="c"></asp:ListItem>

         <asp:ListItem Value="scala" Text="scala"></asp:ListItem>

         <asp:ListItem Value="groovy" Text="groovy"></asp:ListItem>

         <asp:ListItem Value="haskell" Text="haskell"></asp:ListItem>

         <asp:ListItem Value="perl" Text="perl"></asp:ListItem>

    </asp:DropDownList>

Add a C1ComboBoxExtender to the page in the next step.