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DateTimeFormatInfo.LongTimePattern Property

Gets or sets the format pattern for a long time value, which is associated with the "T" format pattern.

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, which is associated with the "T" format pattern.


The property is being set to null.


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

See DateTimeFormatInfo for patterns that can be combined to construct custom patterns, for example, "HH:mm:ss".

Your applications are recommended to set the long time pattern to the exact value of interest, instead of attempting to have the time separator replaced. For example, to obtain the pattern h-mm-ss, the application should set "h-mm-ss" specifically.

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


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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