Updated: March 2012
Represents not a number (NaN). This field is constant.
Assembly: mscorlib (in mscorlib.dll)
Use the IsNaN method to determine whether a value is not a number. Two NaN values are considered unequal to one another. Therefore, it is not possible to determine whether a value is not a number by using the equality operator to compare it to another value that is equal to NaN. The comparison returns false, as the following example shows.
The following code example demonstrates the constant.
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.