Assert.AreNotEqual Method (Object, Object, String)

Verifies that two specified objects are not equal. The assertion fails if the objects are equal. Displays a message if the assertion fails.

Namespace: Microsoft.VisualStudio.TestTools.UnitTesting
Assembly: Microsoft.VisualStudio.QualityTools.UnitTestFramework (in Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll)


Public Shared Sub AreNotEqual ( _
    notExpected As Object, _
    actual As Object, _
    message As String _
public static void AreNotEqual(
    Object notExpected,
    Object actual,
    string message
static void AreNotEqual(
    Object^ notExpected, 
    Object^ actual, 
    String^ message
static member AreNotEqual : 
        notExpected:Object * 
        actual:Object * 
        message:string -> unit
public static function AreNotEqual(
    notExpected : Object, 
    actual : Object, 
    message : String


  • notExpected
    Type: Object

    The first object to compare. This is the object the unit test expects not to match actual.

  • actual
    Type: Object

    The second object to compare. This is the object the unit test produced.

  • message
    Type: String

    A message to display if the assertion fails. This message can be seen in the unit test results.


Exception Condition

notExpected is equal to actual.


Different numeric types are treated as equal if the logical values are equal. For example, 42L is equal to 42.

.NET Framework Security

See Also


Assert Class

AreNotEqual Overload

Microsoft.VisualStudio.TestTools.UnitTesting Namespace

Other Resources

Using the Assert Classes