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Assert.AreNotEqual Method (String, String, Boolean, String, 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 static void AreNotEqual (
	string notExpected,
	string actual,
	bool ignoreCase,
	string message,
	params Object[] parameters
public static void AreNotEqual (
	String notExpected, 
	String actual, 
	boolean ignoreCase, 
	String message, 
	Object[] parameters
public static function AreNotEqual (
	notExpected : String, 
	actual : String, 
	ignoreCase : boolean, 
	message : String, 
	... parameters : Object[]



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


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


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


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


An array of parameters to use when formatting message.

Exception typeCondition


notExpected is equal to actual.

The invariant culture is used for the comparison.