输入正确的邮箱地址

 <td>
                    <asp:TextBox ID="txtEmail" runat="server" Width="160px"></asp:TextBox>
                    <asp:RegularExpressionValidator ID="revEmail" runat="server" ErrorMessage="请输入正确的邮箱地址！"
                        Display="None" ValidationGroup="1" ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"
                        ControlToValidate="txtEmail"></asp:RegularExpressionValidator>
                </td>