c# - 单击 "OK"按钮时 Modalpopupextender 关闭

Question

我正在使用 Modalpopupextender ajax 控件来弹出面板。面板上有两个按钮，一种是 Asp 按钮 (btnOk)，一种是普通 html 按钮 (btnCancel)。单击确定时，弹出面板关闭，但我不想在单击确定按钮时关闭弹出面板，弹出窗口应仅在单击取消按钮。如何停止 Ok 按钮以关闭弹出面板。请找到下面的代码片段

        <ATK:ModalPopupExtender
            BackgroundCssClass="ModalPopupBG"
            DropShadow="true"
            OkControlID="btnOkay"                
            CancelControlID="btnCancel"
            runat="server"
            PopupControlID="AddTopic"
            id="ModalPopupExtender1" 
            OnOkScript="onOk()"                           
            TargetControlID="btnAddNew"/> 



<asp:Panel ID="AddTopic" runat="server"  CssClass="popup_Container"  >           
        <div class="popup_Titlebar" id="PopupHeader">
            <div class="TitlebarLeft">
                Add New Topic
            </div>
            <div class="TitlebarRight" onclick="cancel();">
            </div>
        </div> 
        <div class="popup_Body">                      
            <asp:Label ID="lblTopic" runat="server" Text="Topic Name"> </asp:Label>
            <asp:TextBox ID="tbTopicName" runat="server" Width="400px" ></asp:TextBox>
            <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" 
                ErrorMessage="*" ControlToValidate="tbTopicName">
            </asp:RequiredFieldValidator>
            <br /> <br />  
            <span style="padding-left:350px"> 
                <asp:Button ID="btnDone" runat="server" Text="Done" onclick="btnDone_Click" 
                UseSubmitBehavior="False"/>  
                <input id="btnCancel" value="Cancel" type="button" OnClick="cancel();"/>                     
            </span>                 
        </div>

        <div class="popup_Buttons" style="display: none">
            <input id="btnOkay" value="Done" type="button" />         
        </div>        
    </asp:Panel>

Answer 1

将以下指令添加到 btnDone_Click 方法的末尾:ModalPopupExtender1.Show();