How to add an initial "select" value to a DropDownList

Question

If I use a DropDownList:

 <asp:DropDownList ID="DropDownListSubContractors" runat="server" 
     DataTextField="Company_Name" DataValueField="id">
 </asp:DropDownList>

What attribute do I use/set that allows me to use '---Select---' as initial option on the drop down, instead of the first value in the list.

Answer 1

You can use

<asp:DropDownList ID="DropDownListSubContractors" runat="server" AppendDataBoundItems="true" DataTextField="Company_Name" DataValueField="id">
    <asp:ListItem Text="---Select---" Value="0" />   
</asp:DropDownList>

Or you can add this dynamically at code behind like this

DropDownListSubContractors.Items.Add(new ListItem("---Select---", "0"));