HTS Code:<asp:DropDownList ID="ddl_HTS_Code" runat="server" CssClass="verdana10pt">
                                            <asp:ListItem Text="-Select-" Value="-1"></asp:ListItem>
                                        </asp:DropDownList>
                                        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;HTS
                                        SubCode:<asp:DropDownList ID="ddl_HTS_SubCode" runat="server" CssClass="verdana10pt">
                                            <asp:ListItem Text="-Select-" Value="-1"></asp:ListItem>
                                        </asp:DropDownList>
                                        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                                        HTS Name:<asp:DropDownList ID="ddl_HTS_Name" runat="server" CssClass="verdana10pt">
                                            <asp:ListItem Text="-Select-" Value="-1"></asp:ListItem>
                                        </asp:DropDownList>
                                        
                                        <ajaxToolKit:CascadingDropDown ID="cdd_HTS_Code" runat="server" TargetControlID="ddl_HTS_Code"
                                            Category="HTS_Code" PromptText="-Select-" LoadingText="[Loading data...]" ServicePath="HTS.asmx"
                                            ServiceMethod="Get_HTS_Code">
                                        </ajaxToolKit:CascadingDropDown>
                                        <ajaxToolKit:CascadingDropDown ID="cdd_HTS_SubCode" runat="server" TargetControlID="ddl_HTS_SubCode"
                                            Category="HTS_SubCode" PromptText="-Select-" LoadingText="[Loading data...]"
                                            ServicePath="hTS.asmx" ServiceMethod="Get_HTS_SubCode" ParentControlID="ddl_HTS_Code">
                                        </ajaxToolKit:CascadingDropDown>
                                        <ajaxToolKit:CascadingDropDown ID="cdd_HTS_Name" runat="server" TargetControlID="ddl_HTS_Name"
                                            Category="HTS_Name" PromptText="-Select-" LoadingText="[Loading data...]" ServicePath="HTS.asmx"
                                            ServiceMethod="Get_HTS_Name" ParentControlID="ddl_HTS_SubCode">
                                        </ajaxToolKit:CascadingDropDown>