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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 */
public String get_AMDesignator ()

/** @property */
public void set_AMDesignator (String value)

public function get AMDesignator () : String

public function set AMDesignator (value : String)

Property Value

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

Exception typeCondition


The property is being set to a null reference (Nothing in Visual Basic).


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.

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

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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