title: Filtering the Ajax combobox in asp.net
body: <p>I am using Ajax toolkit with a combobox functionality, the items being displayed are around 40,000, so I want to apply a filter on the same, so that a user types an alphabet in the combobox and corresponding entries with starting alphabet "a" will be displayed in the combobox.</p>
  
  <p>Can I have an idea, I am not using Radcombobox, it is a simplest combobox.</p>
  
  <pre><code>&lt;asp:ComboBox ID="AppComCombx" runat="server" 
                                  CssClass="dropdownpersonal textfont" 
                                  onselectedindexchanged="AppComCombx_SelectedIndexChanged" AutoPostBack="true"&gt; 
  &lt;/asp:ComboBox&gt;
  </code></pre>