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Version.CompareTo Method (Object)

Compares the current Version object to a specified object and returns an indication of their relative values.

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

public int CompareTo(
	Object version


Type: System.Object

An object to compare, or null.

Return Value

Type: System.Int32

Return Value


Less than zero

The current Version object is a version before version.


The current Version object is the same version as version.

Greater than zero

The current Version object is a version subsequent to version.


version is null.




version is not of type Version.

The components of Version in decreasing order of importance are: major, minor, build, and revision. An unknown component is assumed to be older than any known component.

For example:

  • version 1.1 is older than version 1.1.0

  • version 1.1 is older than version 1.1.1

  • version 1.1 is older than version

  • version 1.1.2 is older than version

  • version 1.2.5 is newer than version

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0