title: How to add placeholder in dropdown list c#
body: <p>Hi I have dropdown list code I want to add placeholder there how I can add?</p>
  
  <pre><code>&lt;asp:DropDownList id="ddlyear" runat="server" &gt;
                       &lt;asp:ListItem &gt;Experience&lt;/asp:ListItem&gt;
                       &lt;asp:ListItem&gt;Fresher&lt;/asp:ListItem&gt;
                       &lt;asp:ListItem&gt;1&lt;/asp:ListItem&gt;
                       &lt;asp:ListItem&gt;2&lt;/asp:ListItem&gt;
                       &lt;asp:ListItem&gt;3&lt;/asp:ListItem&gt;
  &lt;/asp:DropDownList&gt;
  </code></pre>
  
  <p>I want to show like this
  <a href="https://i.stack.imgur.com/6rLoy.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6rLoy.jpg" alt="enter image description here"></a></p>