Type.IsInstanceOfType Method (Object)
Determines whether the specified object is an instance of the current Type.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- o
-
Type:
System.Object
The object to compare with the current type.
Return Value
Type: System.Booleantrue if the current Type is in the inheritance hierarchy of the object represented by o, or if the current Type is an interface that o implements. false if neither of these conditions is the case, if o is null, or if the current Type is an open generic type (that is, ContainsGenericParameters returns true).
Implements
_Type.IsInstanceOfType(Object)This method can be overridden by a derived class.
Note |
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A constructed type is not an instance of its generic type definition. That is, MyGenericList<int> (MyGenericList(Of Integer) in Visual Basic) is not an instance of MyGenericList<T> (MyGenericList(Of T) in Visual Basic). |
The following example demonstrates the use of the IsInstanceOfType method.
Public Interface IExample End Interface Public Class BaseClass : Implements IExample End Class Public Class DerivedClass : Inherits BaseClass End Class Public Module Example Public Sub Main() Dim interfaceType As Type = GetType(IExample) Dim base1 As New BaseClass() Dim base1Type As Type = base1.GetType() Dim derived1 = New DerivedClass() Dim derived1Type As Type = derived1.GetType() Dim arr(10) As Integer Console.WriteLine("Is int[] an instance of the Array class? {0}.", GetType(Array).IsInstanceOfType(arr)) Console.WriteLine("Is base1 an instance of BaseClass? {0}.", base1Type.IsInstanceOfType(base1)) Console.WriteLine("Is derived1 an instance of BaseClass? {0}.", base1Type.IsInstanceOfType(derived1)) Console.WriteLine("Is base1 an instance of IExample? {0}.", interfaceType.IsInstanceOfType(base1)) Console.WriteLine("Is derived1 an instance of IExample? {0}.", interfaceType.IsInstanceOfType(derived1)) End Sub End Module ' The example displays the following output: ' Is int[] an instance of the Array class? True. ' Is base1 an instance of BaseClass? True. ' Is derived1 an instance of BaseClass? True. ' Is base1 an instance of IExample? True. ' Is derived1 an instance of IExample? True.
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
