RequiredFieldValidator無法正常工作？

Question

當我不在文本框中放置任何內容時，單擊按鈕后，消息根本不會顯示。 這是我的代碼：

    <div style="padding-top:5px">
                        <asp:Label Text="Enter Account Email Address" CssClass="required" runat="server" />
                        <asp:TextBox ID="EAdd" width="300px" runat="server" ValidationGroup="Email"/>
                        <asp:RequiredFieldValidator id="RequiredFieldValidator1" runat="server"
                          ControlToValidate="EAdd"
                          ErrorMessage="This is a required field."
                          Display="Dynamic"
                          ValidationGroup="Email"
                          ForeColor="Red">
                        </asp:RequiredFieldValidator>
                        <asp:ValidationSummary id="Errors" ShowMessageBox="true" runat="server" />
                    </div>

Answer 1

您需要在驗證摘要中添加驗證組，就像

<asp:ValidationSummary id="Errors" ShowMessageBox="true" runat="server" ValidationGroup="Email" />

Answer 2

該按鈕是否具有相同的ValidationGroup =“ Email”？