如何从代码后面打开模态弹出扩展程序 [英] how to open modal popup extender from code behind

问题描述

<cc1:ModalPopupExtender ID="mdllogin" TargetControlID="linklogin" PopupControlID="popUpPanel" BackgroundCssClass="modalBackground" CancelControlID="btnclose" runat="server">
                   </cc1:ModalPopupExtender>

我试图打开我的方法

iam trying to open in my calling a method

public void login()
       {
           
           mdllogin.Show();
       }

但它给出错误，因为对象引用没有设置对象

but it is giving error as object reference not set an object

推荐答案

使用模态弹出扩展器的behaviorId

use behaviorId of modal popup extender

cc1:ModalPopupExtender ID="mdllogin" BehaviorId="modal1" TargetControlID="linklogin" PopupControlID="popUpPanel" BackgroundCssClass="modalBackground" CancelControlID="btnclose" runat="server">
                   </cc1:ModalPopupExtender>

public void login()
       {

           modal1.Show();
       }

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