Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
AMDesignator Property

DateTimeFormatInfo.AMDesignator Property

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

Namespace:  System.Globalization
Assemblies:   System.Globalization (in System.Globalization.dll)
  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 a custom format string includes the "tt" format specifier and the time is before noon, the DateTime.ToString or ToString method includes the value of the AMDesignator property in place of "tt" in the result string. If the custom format string includes the "t" custom format specifier, only the first character of the AMDesignator property value is included. You should use "tt" for languages for which it is necessary to maintain the distinction between A.M. and P.M. An example is Japanese, in which the A.M. and P.M. designators differ in the second character instead of the first character.

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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
Show:
© 2015 Microsoft