Hi,

I binding the webdropdown with sqldatasource, but when i choosed the dropdown item,can not cause

the ValueChanged event to fire.

Those are my codes.

CLIENT:

<ig:WebDropDown ID="dpEmp" runat="server" Width="200px"
                        EnableAutoFiltering="Client" DropDownContainerHeight="300px"
                    DataSourceID="SqlDataSource1"  TextField="CN"
                    AutoFilterQueryType="Contains" AutoFilterResultSize="100"
                    AutoFilterTimeoutMs="2000" AutoPostBack="True"
                    onvaluechanged="dpEmp_ValueChanged" DataKeyFields="Code" 
                     ValueField="Code"
                    >
                    <DropDownItemBinding TextField="CN" ValueField="Code"></DropDownItemBinding>
                    <AutoPostBackFlags SelectionChanged="On" ValueChanged="On" />
                </ig:WebDropDown>

                <asp:SqlDataSource ID="SqlDataSource1" runat="server"
                    ConnectionString="<%$ ConnectionStrings:ExpenseLineConnectionString %>"
                   
                    SelectCommand="SELECT Code+Name AS CN, Code FROM TCCEmp WHERE (CCEmp = @CCEmp)">
                    <SelectParameters>
                        <asp:Parameter DefaultValue="E" Name="CCEmp" Type="String" />
                    </SelectParameters>
                </asp:SqlDataSource>

SERVER:

protected void dpEmp_ValueChanged(object sender, Infragistics.Web.UI.ListControls.DropDownValueChangedEventArgs e)
    {

    }