RFC1123Pattern Property

DateTimeFormatInfo.RFC1123Pattern Property

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Gets the custom date and time format string that is based on the Internet Engineering Task Force (IETF) Request for Comments (RFC) 1123 specification and is associated with the "r" and "R" standard format strings.

Namespace:  System.Globalization
Assembly:  mscorlib (in mscorlib.dll)

public string RFC1123Pattern { get; }

Property Value

Type: System.String
The custom date and time format string that is based on the IETF RFC 1123 specification. The string is invariant; it does not vary by cultures.

The following example displays the value of RFC1123Pattern for a few cultures.

using System;
using System.Globalization;

public class Example
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
      // Displays the values of the pattern properties.
      outputBlock.Text += " CULTURE    PROPERTY VALUE" + "\n";
      PrintPattern(outputBlock, "en-US");
      PrintPattern(outputBlock, "ja-JP");
      PrintPattern(outputBlock, "fr-FR");

   public static void PrintPattern(System.Windows.Controls.TextBlock outputBlock, String myCulture)
      DateTimeFormatInfo myDTFI = new CultureInfo(myCulture).DateTimeFormat;
      outputBlock.Text += String.Format("  {0}     {1}", myCulture, myDTFI.RFC1123Pattern) + "\n";
This example produces the following output.
        en-US     ddd, dd MMM yyyy HH':'mm':'ss 'GMT'
        ja-JP     ddd, dd MMM yyyy HH':'mm':'ss 'GMT'
        fr-FR     ddd, dd MMM yyyy HH':'mm':'ss 'GMT'

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

© 2017 Microsoft