datetimeformats.aspx font size:
<%@ Import Namespace="System" %>
<%@ Import Namespace="System.Globalization" %>

<html>
<head>
<title>Date and Time Format Patterns</title>
<link rel="stylesheet" href="/aspxtreme/shared/netdemos.css">

<script language="C#" runat="server">
DateTime now;
string html;

public void Page_Load ( Object src, EventArgs e ) {
   // Create a new DateTimeFormatinfo instance.
   DateTimeFormatInfo myDtfi = new DateTimeFormatInfo ( );

   // Create a new DateTime object
   now = DateTime.Now;

   // Get and print all the patterns.
   String [ ] myPatterns = myDtfi.GetAllDateTimePatterns ( );
   html += "<table align='center' class='data' width=80% cellspacing=1>";
   html += "<tr><th colspan=3>All the patterns:</th></tr>";
   showValues ( myPatterns );

   // Get and print the pattern(s) associated with some of the format characters.
   myPatterns = myDtfi.GetAllDateTimePatterns ( 'd' );
   html += "<table align='center' class='data' width=80% cellspacing=1>";
   html += "<tr><th colspan=3>The patterns for DateTime.ToString ( 'd' ) :</th></tr>";
   showValues ( myPatterns );

   myPatterns = myDtfi.GetAllDateTimePatterns ( 'D' );
   html += "<table align='center' class='data' width=80% cellspacing=1>";
   html += "<tr><th colspan=3>The patterns for DateTime.ToString ( 'D' ) :</th></tr>";
   showValues ( myPatterns );

   myPatterns = myDtfi.GetAllDateTimePatterns ( 'f' );
   html += "<table align='center' class='data' width=80% cellspacing=1>";
   html += "<tr><th colspan=3>The patterns for DateTime.ToString ( 'f' ) :</th></tr>";
   showValues ( myPatterns );

   myPatterns = myDtfi.GetAllDateTimePatterns ( 'F' );
   html += "<table align='center' class='data' width=80% cellspacing=1>";
   html += "<tr><th colspan=3>The patterns for DateTime.ToString ( 'F' ) :</th></tr>";
   showValues ( myPatterns );

   myPatterns = myDtfi.GetAllDateTimePatterns ( 'g' );
   html += "<table align='center' class='data' width=80% cellspacing=1>";
   html += "<tr><th colspan=3>The patterns for DateTime.ToString ( 'g' ) :</th></tr>";
   showValues ( myPatterns );

   myPatterns = myDtfi.GetAllDateTimePatterns ( 'G' );
   html += "<table align='center' class='data' width=80% cellspacing=1>";
   html += "<tr><th colspan=3>The patterns for DateTime.ToString ( 'G' ) :</th></tr>";
   showValues ( myPatterns );

   myPatterns = myDtfi.GetAllDateTimePatterns ( 'm' );
   html += "<table align='center' class='data' width=80% cellspacing=1>";
   html += "<tr><th colspan=3>The patterns for DateTime.ToString ( 'm' ) :</th></tr>";
   showValues ( myPatterns );

   myPatterns = myDtfi.GetAllDateTimePatterns ( 'r' );
   html += "<table align='center' class='data' width=80% cellspacing=1>";
   html += "<tr><th colspan=3>The patterns for DateTime.ToString ( 'r' ) :</th></tr>";
   showValues ( myPatterns );

   myPatterns = myDtfi.GetAllDateTimePatterns ( 's' );
   html += "<table align='center' class='data' width=80% cellspacing=1>";
   html += "<tr><th colspan=3>The patterns for DateTime.ToString ( 's' ) :</th></tr>";
   showValues ( myPatterns );

   myPatterns = myDtfi.GetAllDateTimePatterns ( 'u' );
   html += "<table align='center' class='data' width=80% cellspacing=1>";
   html += "<tr><th colspan=3>The patterns for DateTime.ToString ( 'u' ) :</th></tr>";
   showValues ( myPatterns );

   myPatterns = myDtfi.GetAllDateTimePatterns ( 'U' );
   html += "<table align='center' class='data' width=80% cellspacing=1>";
   html += "<tr><th colspan=3>The patterns for DateTime.ToString ( 'U' ) :</th></tr>";
   showValues ( myPatterns );

   myPatterns = myDtfi.GetAllDateTimePatterns ( 'y' );
   html += "<table align='center' class='data' width=80% cellspacing=1>";
   html += "<tr><th colspan=3>The patterns for DateTime.ToString ( 'y' ) :</th></tr>";
   showValues ( myPatterns );

}

void showValues ( String [ ] myArray ) {
   int i = 0;
   foreach ( String s in myArray ) {
      html += "<td>" + i++ + "</td>";
      html += "<td>" + s + "</td>";
      html += "<td>" + now.ToString ( s ) + "</td></tr>";
   }
   html += "</table><br>";
}
</script>

<body>
<!-- #include virtual="~/shared/top.inc" -->

<div class="header"><h3>Date and Time Format Patterns</h3></div>

<hr size=1 width=90%>

<p><%= html %></p>

<hr size=1 width=90%>

<!-- #include virtual="~/shared/viewsrc.inc" -->

</body>
</html>