在母版页中访问方法时出错 [英] Error when accessing method in master page

问题描述

我正在尝试在master中调用消息，但是所调用的方法内发生错误.
方法是:

Im trying to call a message in master but a error occurs within the method called.
The method is:

public bool CheckErrors()
   {
      
       ValidationSummary sum= new ValidationSummary();
       Page.Validate(sum.ValidationGroup);/
       if (!Page.IsValid)
       {

           update.Update();/error is in this line
           modalPopupEx.Show();
           return false;
       }
       return true;
   }

asp.net中的更新面板如下:

The update panel in asp.net is like:

<asp:UpdatePanel ID="update" runat="server" UpdateMode="Conditional">
    <ContentTemplate>
                    <asp:Panel ID="errorsPanel" runat="server" Height="41px"

                        style="margin-left: 54px; margin-top: 144px" Width="812px" BackColor="White">
                        <div style="text-align: left">
                        <asp:ValidationSummary ID="valSummary" runat="server"

    DisplayMode="BulletList" ShowSummary="true"

        ValidationGroup="valGroup" />

<div style="text-align: right">
       <asp:Button ID="okBtn" runat="server" Text="Ok" /></div>

                        </div>
                    </asp:Panel>
                     <asp:Label ID="invisibleTarget" runat="server" Style="display: none" />
                    <asp:ModalPopupExtender ID="modalPopupEx" runat="server" PopupControlID="errorsPanel"

                      TargetControlID="invisibleTarget" CancelControlID="okBtn" BackgroundCssClass="modalBackground">
                    </asp:ModalPopupExtender>
                    </ContentTemplate>
</asp:UpdatePanel>

它说未将对象引用设置为对象的实例.这意味着更新面板为空.我该如何解决此错误.需要帮助

谢谢

It say that Object reference not set to an instance of an object.meaning that update panel is null.How can i go about solving this error.Help needed please

Thanks

推荐答案

我自己解决了.谢谢大家的辛苦

I solved it myself.Thanks you all fro your effort

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