LongTimePattern Property

DateTimeFormatInfo.LongTimePattern Property


Gets or sets the custom format string for a long time value.

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

public string LongTimePattern { get; set; }

Property Value

Type: System.String

The format pattern for a long time value.

Exception Condition

The property is being set to null.


The property is being set and the DateTimeFormatInfo object is read-only.

The LongTimePattern 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 "T" standard format string.

We recommend that you set the time separator in the long time pattern to an exact string instead of using the time separator placeholder. For example, to obtain the pattern h-mm-ss, set the long date pattern to "h-mm-ss".

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

using System;
using System.Globalization;

public class SamplesDTFI  {

   public static void Main()  {

      // Displays the values of the pattern properties.
      Console.WriteLine( " CULTURE    PROPERTY VALUE" );
      PrintPattern( "en-US" );
      PrintPattern( "ja-JP" );
      PrintPattern( "fr-FR" );


   public static void PrintPattern( String myCulture )  {

      DateTimeFormatInfo myDTFI = new CultureInfo( myCulture, false ).DateTimeFormat;
      Console.WriteLine( "  {0}     {1}", myCulture, myDTFI.LongTimePattern );



This code produces the following output.

  en-US     h:mm:ss tt
  ja-JP     H:mm:ss
  fr-FR     HH:mm:ss


Universal Windows Platform
Available since 4.5
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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