ajax中 combobox怎么显示两列数据呢

Question

ajax中有一个combobox控件，能不能显示两列数据呢？我看官网上有这样的例子，但是我照搬过来的时候却有问题，
这是网上的代码<telerik:RadComboBox ID="RadComboBoxProduct" runat="server" Height="200px" Width="200px"
                            DropDownWidth="298px" EmptyMessage="Choose a Product" HighlightTemplatedItems="true"
                            EnableLoadOnDemand="true" Filter="StartsWith" OnItemsRequested="RadComboBoxProduct_ItemsRequested">
                            <HeaderTemplate>
                                <table style="width: 275px" cellspacing="0" cellpadding="0">
                                    <tr>
                                        <td style="width: 177px;">
                                            Product Name</td>
                                        <td style="width: 60px;">
                                            Quantity</td>
                                        <td style="width: 40px;">
                                            Price</td>
                                    </tr>
                                </table>
                            </HeaderTemplate>
                            <ItemTemplate>
                                <table style="width: 275px" cellspacing="0" cellpadding="0">
                                    <tr>
                                        <td style="width: 177px;">
                                            <%# DataBinder.Eval(Container, "Text")%>
                                        </td>
                                        <td style="width: 60px;">
                                            <%# DataBinder.Eval(Container, "Attributes['UnitsInStock']")%>
                                        </td>
                                        <td style="width: 40px;">
                                            <%# DataBinder.Eval(Container, "Attributes['UnitPrice']")%>
                                        </td>
                                    </tr>
                                </table>
                            </ItemTemplate>
                        </telerik:RadComboBox>但是在VS2010上面会出错， 好像一个是没有 <HeaderTemplate>  这一类的东东的。或者 怎么样做才能显示两例数据，有什么别的好办法？

Answer 1

<telerik:RadComboBox ID="RadComboBox_Initiator" runat="server" Width="210px" DropDownWidth="270px"
                    ShowToggleImage="True" Skin="Inox" ><CollapseAnimation Type="OutQuint" Duration="200"></CollapseAnimation>
                    <ItemTemplate>
                        <div id="div4">
                            <telerik:RadGrid runat="server" ID="RadGrid1" Skin="Inox" DataSourceID="SqlDataSource1"
                                AutoGenerateColumns="False" CssClass="InitiatorSelector" 
                                AllowMultiRowSelection="True" AllowPaging="True" GridLines="None" PageSize="5">
                                <MasterTableView ClientDataKeyNames="FirstName">
                                    <RowIndicatorColumn>
                                        <HeaderStyle Width="20px" />
                                    </RowIndicatorColumn>
                                    <ExpandCollapseColumn>
                                        <HeaderStyle Width="20px" />
                                    </ExpandCollapseColumn>
                                    <Columns>
                                        <telerik:GridBoundColumn DataField="LastName" HeaderText="Last&nbsp;Name&nbsp;&nbsp;">
                                        </telerik:GridBoundColumn>
                                        <telerik:GridBoundColumn DataField="FirstName" HeaderText="First&nbsp;Name&nbsp;&nbsp;">
                                        </telerik:GridBoundColumn>
                                        <telerik:GridBoundColumn DataField="HomePhone" HeaderText="Phone">
                                        </telerik:GridBoundColumn>
                                    </Columns>
                                </MasterTableView>
                                <ClientSettings EnableRowHoverStyle="true">
                                    <Selecting AllowRowSelect="True" />
                                    <ClientEvents OnRowSelected="onRowSelected" />
                                </ClientSettings>
                                <FilterMenu EnableTheming="True" Skin="Inox">
                                    <CollapseAnimation Duration="200" Type="OutQuint" />
                                </FilterMenu>
                            </telerik:RadGrid>
                        </div>
                        <asp:SqlDataSource runat="server" ID="SqlDataSource1" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"
                            SelectCommand="SELECT [LastName], [FirstName], [HomePhone] FROM [Employees]"></asp:SqlDataSource>
                    </ItemTemplate>
                    <Items>
                        <telerik:RadComboBoxItem ></telerik:RadComboBoxItem>
                    </Items>
                </telerik:RadComboBox>

Answer 2

这个是telerik 公司的产品，你没有买，是用不了的，官网上有试用版

Answer 3

这是第三方控件 又不是 asp.net 自带的东西