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DateTimeFormatInfo.AMDesignator Property

Gets or sets the string designator for hours that are "ante meridiem" (before noon).

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

public string AMDesignator { get; set; }

Property Value

Type: System.String
The string designator for hours that are "ante meridiem" (before noon). The default for InvariantInfo is "AM".

ExceptionCondition
ArgumentNullException

The property is being set to null.

InvalidOperationException

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

If the custom pattern includes the format pattern "tt" and the time is before noon, DateTime.ToString displays the value of AMDesignator in place of the "tt" in the format pattern. If the custom pattern includes the format pattern "t", only the first character of AMDesignator is displayed. Your application should use "tt" for languages for which it is necessary to maintain the distinction between AM and PM. An example is Japanese, for which the AM and PM designators differ in the second character instead of the first character.

For cultures that do not use an AM designator, this property returns an empty string.

The AMDesignator property is used for all times from 00:00:00 (midnight) to 11:59:59.999.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

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

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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