ValidatorCalloutExtender 在 win2003 的 IIS6.0 下使用出错

Question

使用了　ajaxToolkit:ValidatorCalloutExtender　控件，在winxp下使用正常
便在win2003 IIS6.0　下会出错程序代码<asp:TextBox ID="txtUserName" runat="server" Width="120px"></asp:TextBox>
                                        <asp:RequiredFieldValidator runat="server" ID="NameReq" ControlToValidate="txtUserName"
                                            Display="None" ValidationGroup="ValidationGroup1" ErrorMessage="<span class='ErrorMessage'>必须输入用户名。</span>" />
                                        <ajaxToolkit:ValidatorCalloutExtender runat="Server" ID="NameReqE" TargetControlID="NameReq"
                                            HighlightCssClass="validatorCalloutHighlight" />
错误信息
行: 75
错误: 'controltovalidate' 为空或不是对象这是怎么回事

Answer 1

HTML代码
<td class="txtbox">
                                        <asp:TextBox ID="txtUserName" runat="server" Width="120px"></asp:TextBox>
                                        <asp:RequiredFieldValidator runat="server" ID="NameReq" ControlToValidate="txtUserName"
                                            Display="None" ValidationGroup="ValidationGroup1" ErrorMessage="<span class='ErrorMessage'>必须输入用户名。</span>" />
                                        <ajaxToolkit:ValidatorCalloutExtender runat="Server" ID="NameReqE" TargetControlID="NameReq"
                                            HighlightCssClass="validatorCalloutHighlight" />
                                    </td>

Answer 2

在用ajax的同时用验证控件是会出问题的，解决方法好像博客园的老赵有篇文章讲了，lz可以搜搜看

Answer 3

解决了，是验证控件的bug
http://space.itpub.net/?uid-14466241-action-viewspace-itemid-582217
这里有方法