Math.Round Method (Double, Int32)
Rounds a double-precision floating-point value to a specified number of fractional digits.
Assembly: mscorlib (in mscorlib.dll)
A double-precision floating-point number to be rounded.
The number of fractional digits in the return value.
Return ValueType: System.Double
The number nearest to value that contains a number of fractional digits equal to digits.
Notes to Callers:
Because of the loss of precision that can result from representing decimal values as floating-point numbers or performing arithmetic operations on floating-point values, in some cases the digits, and the multiplication operation in this case suffers from a loss of precision.method may not appear to round midpoint values to the nearest even value in the digits decimal position. This is illustrated in the following example, where 2.135 is rounded to 2.13 instead of 2.14. This occurs because internally the method multiplies value by 10
Available since 4.5
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Available since 8.1