Determines if the value of one instance of Duration is less than or equal to the value of another instance.
Assembly: PresentationCore (in PresentationCore.dll)
Return ValueType: System.Boolean
true if both t1 and t2 have values and t1 is less than or equal to t2; otherwise, false.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, 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.