Gets or sets the string designator for hours that are "ante meridiem" (before noon).
Assembly: mscorlib (in mscorlib.dll)
The 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 in place of the "tt" in the format pattern. If the custom pattern includes the format pattern "t", only the first character of 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.
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.