comparevalidator 2

代碼：

<script  runat="server">


sub check_operator(sender As Object, e As EventArgs)


   compval.Operator=CType(list.SelectedIndex,ValidationCompareOperator)


   compval.Validate()


end sub


</script>


 


<!DOCTYPE html>


<html>


<body>


 


<form runat="server">


<table border="0" bgcolor="#b0c4de">


   <tr valign="top">


     <td colspan="4"><h4>Compare two values</h4></td>


   </tr>


   <tr valign="top">


     <td><asp:TextBox id="txt1" runat="server" /></td>


     <td>


     <asp:ListBox id="list" rows="2" OnSelectedIndexChanged="check_operator" runat="server">


           <asp:ListItem value="Equal" selected>=</asp:ListItem>


           <asp:ListItem value="NotEqual"><></asp:ListItem>


     </asp:ListBox>


     </td>


     <td><asp:TextBox id="txt2" runat="server" /></td>


     <td><asp:Button Text="Validate" runat="server" /></td>


   </tr>


</table>


<br>


<asp:CompareValidator


id="compval"


Display="dynamic"


ControlToValidate="txt1"


ControlToCompare="txt2"


ForeColor="red"


BackColor="yellow"


Type="String"


EnableClientScript="false"


Text="Validation Failed!"


runat="server" />


</form>


 


</body>


</html>

結(jié)果：

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