在asp.net 1.1中,对于验证类控件,在使用时,遇到有的不需要验证的控件时,是十分麻烦的,就是说不可能有选择验证某些控件,而在asp.net 2.0中,新增加了validationgroup属性,可以指定验证某些控件,例子如下:
<html>
<body>
     <form runat=“server”>
          <asp:textbox id=“TextBox1” runat=“server”/>
          <asp:requiredfieldvalidator ValidationGroup=“Group1” 
                                                       ErrorText=“Need to Fill in Value!” 
                                                       ControlToValidate=“TextBox1”
                                                       runat=“server”/> 
            <asp:textbox id=“TextBox2” runat=“server”/>
            <asp:requiredfieldvalidator ValidationGroup=“Group2” 
                                                         ErrorText=“Need to Fill in Value!” 
                                                         ControlToValidate=“TextBox2”
                                                         runat=“server”/> 
            <asp:button text=“Group1” ValidationGroup=“Group1” runat=“server”/>
            <asp:button text=“Group2” ValidationGroup=“Group2” runat=“server”/>
     </form>
</body>
</html>