if got a listbox and dropdownlist on a form.

My problem is when an item is selected in the listbox, the listbox selectedindexchanged event fires when i clicked on the dropdownlist, i want the dropdownlist selectedindexchanged event to fire.

can anyone help me

Can you post your code?

private void ddlSort_SelectedIndexChanged(object sender, System.EventArgs e)
{
  LoadLeads();//this function populates the listbox
}

private void listLeads_SelectedIndexChanged(object sender, System.EventArgs e)
{
  Server.Transfer("frmLead.aspx?DealKey=" + Leads.SelectedValue.ToString().Trim());

}

Can you post the HTML for the list box and ddl controls?

Make sure AutoPostBack is set to "True" in your dropdownlist and listbox.

<asp:listbox id="listLeads" style="Z-INDEX: 101; LEFT: 8px; POSITION: absolute; TOP: 184px" tabIndex="2" runat="server" Font-Names="Courier New" Width="972px" Height="266px"></asp:listbox>

<asp:dropdownlist id="ddlSort" style="Z-INDEX: 111; LEFT: 544px; POSITION: absolute; TOP: 64px" tabIndex="1" runat="server" AutoPostBack="True" Width="158px" Font-Names="Verdana" Font-Size="10pt" ForeColor="Black"></asp:dropdownlist>

The Autopostback of the listbox is also true

Try adding OnSelectedIndexChanged="the_appropriate_handler" for each control.