System.Runtime.Extensions 4.0.0 System.Runtime.Extensions true Microsoft Microsoft http://go.microsoft.com/fwlink/?LinkId=329770 http://go.microsoft.com/fwlink/?LinkID=288859 Provides commonly-used classes for performing mathematical functions, conversions, string comparisons and querying environment information. Commonly Used Types: System.Math System.Environment System.Random System.Progress<T> System.Convert System.Diagnostics.Stopwatch System.Runtime.Versioning.FrameworkName System.StringComparer System.IO.Path Provides commonly-used classes for performing mathematical functions, conversions, string comparisons and querying environment information. Copyright © Microsoft Corporation