验证应用

<asp:textbox id="tbSearch" runat="server" Width="100" CssClass="ccSearch"></asp:textbox>


<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="请输入订单号" ControlToValidate="tbSearch">*</asp:RequiredFieldValidator>



<asp:ImageButton ID="ibtnGo" ImageUrl="images/go.gif" runat="server" OnClick="ibtnGo_Click" />

<asp:ValidationSummary ID="ValidationSummary1" runat="server" ShowMessageBox="true" ShowSummary="false" />