Boolean.CompareTo Method (Object)

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Compares this instance to a specified object and returns an integer that indicates their relationship to one another.

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


Public Function CompareTo ( _
    obj As Object _
) As Integer
public int CompareTo(
    Object obj


  • obj
    Type: System.Object
    An object to compare to this instance, or nulla null reference (Nothing in Visual Basic).

Return Value

Type: System.Int32
A signed integer that indicates the relative order of this instance and obj.

Return Value


Less than zero

This instance is false and obj is true.


This instance and obj are equal (either both are true or both are false).

Greater than zero

This instance is true and obj is false.


obj is nulla null reference (Nothing in Visual Basic).




Exception Condition

obj is not a Boolean.


obj must be nulla null reference (Nothing in Visual Basic) or an instance of Boolean; otherwise, an exception is thrown.

This method implements the IComparable interface.

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.