Decimal.Round Method (Decimal, MidpointRounding)

Note: This method is new in the .NET Framework version 2.0.

Rounds a decimal value to the nearest integer. A parameter specifies how to round the value if it is midway between two other numbers.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

public static decimal Round (
	decimal d,
	MidpointRounding mode
public static Decimal Round (
	Decimal d, 
	MidpointRounding mode
public static function Round (
	d : decimal, 
	mode : MidpointRounding
) : decimal



A decimal number to round.


A value that specifies how to round d if it is midway between two other numbers.

Return Value

The integer that is nearest to the d parameter. If d is halfway between two numbers, one of which is even and the other odd, the mode parameter determines which of the two numbers is returned.

Exception typeCondition


mode is not a System.MidpointRounding value.


The result is outside the range of a Decimal object.

The behavior of this method follows IEEE Standard 754, section 4. This kind of rounding is sometimes called rounding to nearest or banker's rounding.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0