Assert.IsInstanceOfType Method (Object, Type, String)

Verifies that the specified object is an instance of the specified type. The assertion fails if the type is not found in the inheritance hierarchy of the object. Displays a message if the assertion fails.

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

public static void IsInstanceOfType(
	Object value,
	Type expectedType,
	string message
)

Parameters

value
Type: System.Object

The object to verify is of expectedType.

expectedType
Type: System.Type

The type expected to be found in the inheritance hierarchy of value.

message
Type: System.String

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

ExceptionCondition
AssertFailedException

value is null or expectedType is not found in the inheritance hierarchy of value.

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