Assert.AreNotEqual Method (String, String, Boolean, String, array<Object )

Verifies that two specified strings are not equal, ignoring case or not as specified. The assertion fails if they are equal. Displays a message if the assertion fails, and applies the specified formatting to it.

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


Public Shared Sub AreNotEqual ( _
    notExpected As String, _
    actual As String, _
    ignoreCase As Boolean, _
    message As String, _
    ParamArray parameters As Object() _
public static void AreNotEqual(
    string notExpected,
    string actual,
    bool ignoreCase,
    string message,
    params Object[] parameters
static void AreNotEqual(
    String^ notExpected, 
    String^ actual, 
    bool ignoreCase, 
    String^ message, 
    ... array<Object^>^ parameters
static member AreNotEqual : 
        notExpected:string * 
        actual:string * 
        ignoreCase:bool * 
        message:string * 
        parameters:Object[] -> unit
public static function AreNotEqual(
    notExpected : String, 
    actual : String, 
    ignoreCase : boolean, 
    message : String, 
    ... parameters : Object[]


  • notExpected
    Type: String

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

  • actual
    Type: String

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

  • ignoreCase
    Type: Boolean

    A Boolean value that indicates a case-sensitive or insensitive comparison. true indicates a case-insensitive comparison.

  • message
    Type: String

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

  • parameters
    Type: array<Object[]

    An array of parameters to use when formatting message.


Exception Condition

notExpected is equal to actual.


The invariant culture is used for the comparison.

.NET Framework Security

See Also


Assert Class

AreNotEqual Overload

Microsoft.VisualStudio.TestTools.UnitTesting Namespace

Other Resources

Using the Assert Classes