How to add placeholder in dropdown list c#

Question

Hi I have dropdown list code I want to add placeholder there how I can add?

<asp:DropDownList id="ddlyear" runat="server" >
                     <asp:ListItem >Experience</asp:ListItem>
                     <asp:ListItem>Fresher</asp:ListItem>
                     <asp:ListItem>1</asp:ListItem>
                     <asp:ListItem>2</asp:ListItem>
                     <asp:ListItem>3</asp:ListItem>
</asp:DropDownList>

I want to show like this

Answer 1

You can just do this:

    <asp:DropDownList id="ddlyear" runat="server" >
                     <asp:ListItem selected hidden>Experience</asp:ListItem>
                     <asp:ListItem>Fresher</asp:ListItem>
                     <asp:ListItem>1</asp:ListItem>
                     <asp:ListItem>2</asp:ListItem>
                     <asp:ListItem>3</asp:ListItem>
    </asp:DropDownList>

The selected makes it the default, while hidden prevents it to be visible on the expanded list.

It's the simplest way possible.