The RFC1123Pattern property defines the culture-specific format of date strings that are returned by calls to the DateTime.ToString and DateTimeOffset.ToString methods and by composite format strings that are supplied the "r" and "R" standard format strings.
The RFC1123 pattern reflects a defined standard, and the property is read-only. Therefore, it is always the same, regardless of the culture. The custom format string is "ddd, dd MMM yyyy HH':'mm':'ss 'GMT'".
Universal Windows Platform Available since 8 .NET Framework Available since 1.1 Portable Class Library Supported in:
portable .NET platforms Silverlight Available since 2.0 Windows Phone Silverlight Available since 7.0 Windows Phone Available since 8.1