SemaphoreSlim Constructor (Int32, Int32)
Initializes a new instance of the SemaphoreSlim class, specifying the initial and maximum number of requests that can be granted concurrently.
Assembly: mscorlib (in mscorlib.dll)
initialCount is less than 0, or initialCount is greater than maxCount, or maxCount is equal to or less than 0.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.