RangeValidator1.aspx font size:
View Sample
<%@ Page clienttarget=downlevel %>

<html>
<head>
<title>RangeValidator Sample</title>
<link rel="stylesheet" href="/shared/netdemos.css">

<script language="C#" runat="server">
void ValidateBtnClick ( object src, EventArgs e ) {
   rangeVal.Type = ( ValidationDataType ) listTypes.SelectedIndex;
   rangeVal.MinimumValue = txtMin.Text;
   rangeVal.MaximumValue = txtMax.Text;
   rangeVal.Validate ( );

   if ( Page.IsValid ) {
      lblmsg.Text = "Value is within valid range!";
   }
   else {
      lblmsg.Text = "Value is not within valid range!";
   }
}
</script>
</head>

<body>
<!-- #include virtual="~/shared/top.inc -->
<div class="header"><h2>RangeValidator Sample</h2></div>

<!-- #include virtual="~/shared/viewsrc_top.inc" -->
<hr size=1 width=92%>

<div align="center">
<form runat="server">

<table bgcolor="#eeeeee" cellpadding=10>
<tr valign="top">
   <td><h5>Value to Check:</h5>
      <asp:textbox selected id="txtComp" runat="server" />
      <br>
      <asp:requiredfieldvalidator runat="server"
         controltovalidate="txtComp"
         errormessage="Field cannot be blank" /></td>
   <td>
   <h5>Data Type:</h5>
   <asp:dropdownlist id="listTypes" runat="server">
      <asp:listitem selected value="String">String</asp:listitem>
      <asp:listitem value="Integer">Integer</asp:listitem>
      <asp:listitem value="Double">Double</asp:listitem>
      <asp:listitem value="Date">Date</asp:listitem>
      <asp:listitem value="Currency">Currency</asp:listitem>
      </asp:dropdownlist></td>
   <td>
      <h5>Minimum Value:</h5>
      <asp:textbox id="txtMin" runat="server" />
      <br>
      <asp:requiredfieldvalidator runat="server"
         controltovalidate="txtMin"
         errormessage="Field cannot be blank" /></td>
   <td>
      <h5>Maximum Value:</h5>
      <asp:textbox id="txtMax" runat="server" />
      <br>
      <asp:requiredfieldvalidator runat="server"
         controltovalidate="txtMax"
         errormessage="Field cannot be blank" /></td></tr>
</table>

<br>

<asp:button text="Validate" onClick="ValidateBtnClick" runat="server" />

<br>

<asp:rangevalidator id="rangeVal" runat="server"
   controltovalidate="txtComp" />

<br>

<asp:label id="lblmsg"  runat="server" />

</form>
</div>

<hr size=1 width=92%>
<!-- #include virtual="~/shared/viewsrc.inc" -->

</body>
</html>