Articolo
11/18/2011

DateTimeFormatInfo.LongDatePattern Property

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Gets or sets the custom format string for a long date value, which is associated with the "D" standard date and time format string.

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

Syntax

'Declaration
Public Property LongDatePattern As String

public string LongDatePattern { get; set; }

Property Value

Type: System.String
The custom format string for a long date value, which is associated with the "D" standard format string.

Exceptions

Exception	Condition
ArgumentNullException	An attempt was made to set the property to nulla null reference (Nothing in Visual Basic).
InvalidOperationException	The DateTimeFormatInfo object is read-only.

Remarks

See Custom Date and Time Format Strings for custom date and time format specifiers that can be combined to construct custom date and time strings, such as "dddd, dd MMMM yyyy".

This property is affected if the value of the Calendar property changes.

Examples

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

Imports System.Globalization

Public Class Example
   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      ' Displays the values of the pattern properties.
      outputBlock.Text &= " CULTURE    PROPERTY VALUE" & vbCrLf
      PrintPattern(outputBlock, "en-US")
      PrintPattern(outputBlock, "ar-EG")
      PrintPattern(outputBlock, "fr-FR")
   End Sub 

   Public Shared Sub PrintPattern(ByVal outputBlock As System.Windows.Controls.TextBlock, ByVal myCulture As [String])
      Dim myDTFI As DateTimeFormatInfo = New CultureInfo(myCulture).DateTimeFormat
      outputBlock.Text += String.Format("  {0}     {1}", myCulture, myDTFI.LongDatePattern) & vbCrLf
   End Sub  
End Class 
'This example produces the following output.
'        CULTURE    PROPERTY VALUE
'         en-US     dddd, MMMM dd, yyyy
'         ar-EG     dd MMMM, yyyy
'         fr-FR     dddd d MMMM yyyy

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, "ar-EG");
      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.LongDatePattern) + "\n";
   }
}
/*
This example produces the following output:
    CULTURE    PROPERTY VALUE
     en-US     dddd, MMMM dd, yyyy
     ar-EG     dd MMMM, yyyy
     fr-FR     dddd d MMMM yyyy
*/

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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