ASP.NET验证控件(ValidationSummary)

<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txtNavicert"
        Display="None" ErrorMessage="准运卡号不能为空!"></asp:RequiredFieldValidator>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="txtEmptyWeight"
        Display="None" ErrorMessage="空车重量不能为空!"></asp:RequiredFieldValidator>
<asp:ValidationSummary ID="SummaryValidate" runat="server" ShowMessageBox="True" ShowSummary="False" Font-Names="verdana"  Font-Size="12" />