title: ASP.NET C# OnSelectedIndexChanged event trigger multiple Method
body: <p>I have this asp <code>DropDownList</code></p>
  
  <pre><code>&lt;td&gt;
  &lt;asp:DropDownList ID="ddlCategorySearch" runat="server" OnSelectedIndexChanged="ddlCategorySearch_SelectedIndexChanged" AutoPostBack="true"&gt;&lt;/asp:DropDownList&gt;&lt;br /&gt;
  &lt;asp:DropDownList ID="ddlSubCategorySearch" runat="server" OnSelectedIndexChanged="ddlSubCategorySearch_SelectedIndexChanged" AutoPostBack="true"&gt;&lt;/asp:DropDownList&gt;
  </code></pre>
  
  <p></p>
  
  <p>I want to trigger the <code>OnSelectedIndexChanged</code> with two method 
   <code>ddlCategorySearch_SelectedIndexChanged</code> and <code>ddlSubCategorySearch_SelectedIndexChanged</code></p>
  
  <p>So, if the user triggers the <code>OnSelectedIndexChange</code>, two value method will be triggered. </p>
  
  <p>But I can't solve that, how can I do that?</p>