验证控件中电话号码的表达式

<asp:RegularExpressionValidator id="RegularExpressionValidator1"         runat="server" ErrorMessage="请写出正确的电话格式" ControlToValidate="tb_phone" ValidationExpression="(\(\d{3}\)|\(\d{4}\)|(\d{3}|\d{4})-)?(\d{8}|\d{7})"></asp:RegularExpressionValidator>