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DateTime.ToLongDateString Method

Converts the value of the current DateTime object to its equivalent long date string representation.

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

public string ToLongDateString()

Return Value

Type: System.String
A string that contains the long date string representation of the current DateTime object.

The value of the current DateTime object is formatted using the pattern defined by the LongDatePattern property associated with the current thread culture. The return value is identical to the value returned by specifying the "D" standard DateTime format string with the ToString(String) method.

Important noteImportant

The string returned by the ToLongDateString method is culture-sensitive. It reflects the pattern defined by the current culture's DateTimeFormatInfo object. For example, for the en-US culture, the standard long date pattern is "dddd, MMMM dd, yyyy"; for the de-DE culture, it is "dddd, d. MMMM yyyy"; for the ja-JP culture, it is "yyyy'?'M'?'d'?'". The specific format string on a particular computer can also be customized so that it differs from the standard long date format string.

For more information about the current thread culture, see the CurrentCulture property. For more information about format characters, format patterns, and the output they produce, see the Formatting Types in the .NET Framework topic. For more information about changing the format pattern associated with a format character, see the DateTimeFormatInfo class.

The following example demonstrates the ToLongDateString method.

// This code example demonstrates the DateTime.ToLongDateString(), 
// DateTime.ToLongTimeString(), DateTime.ToShortDateString(), and 
// DateTime.ToShortTimeString() methods. 

using System;
using System.Threading;
using System.Globalization;

class Sample 
{
    public static void Main() 
    {
    string msg1 = "The date and time patterns are defined in the DateTimeFormatInfo \n" +
                  "object associated with the current thread culture.\n";

// Initialize a DateTime object.
    Console.WriteLine("Initialize the DateTime object to May 16, 2001 3:02:15 AM.\n");
    DateTime myDateTime = new System.DateTime(2001, 5, 16, 3, 2, 15);

// Identify the source of the date and time patterns.
    Console.WriteLine(msg1);

// Display the name of the current culture.
    CultureInfo ci = Thread.CurrentThread.CurrentCulture;
    Console.WriteLine("Current culture: \"{0}\"\n", ci.Name);

// Display the long date pattern and string.
    Console.WriteLine("Long date pattern: \"{0}\"", ci.DateTimeFormat.LongDatePattern);
    Console.WriteLine("Long date string:  \"{0}\"\n", myDateTime.ToLongDateString());

// Display the long time pattern and string.
    Console.WriteLine("Long time pattern: \"{0}\"", ci.DateTimeFormat.LongTimePattern);
    Console.WriteLine("Long time string:  \"{0}\"\n", myDateTime.ToLongTimeString());

// Display the short date pattern and string.
    Console.WriteLine("Short date pattern: \"{0}\"", ci.DateTimeFormat.ShortDatePattern);
    Console.WriteLine("Short date string:  \"{0}\"\n", myDateTime.ToShortDateString());

// Display the short time pattern and string.
    Console.WriteLine("Short time pattern: \"{0}\"", ci.DateTimeFormat.ShortTimePattern);
    Console.WriteLine("Short time string:  \"{0}\"\n", myDateTime.ToShortTimeString());
    }
}

/*
This code example produces the following results:

Initialize the DateTime object to May 16, 2001 3:02:15 AM

The date and time patterns are defined in the DateTimeFormatInfo
object associated with the current thread culture.

Current culture: "en-US"

Long date pattern: "dddd, MMMM dd, yyyy"
Long date string:  "Wednesday, May 16, 2001"

Long time pattern: "h:mm:ss tt"
Long time string:  "3:02:15 AM"

Short date pattern: "M/d/yyyy"
Short date string:  "5/16/2001"

Short time pattern: "h:mm tt"
Short time string:  "3:02 AM"

*/

.NET Framework

Supported in: 4.6, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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