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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. The default for InvariantInfo is "AM".

ExceptionCondition
ArgumentNullException

The property is being set to null.

InvalidOperationException

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

The AMDesignator property is used for all times from 0:00:00 (midnight) to 11:59:59.999.

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.

.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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