Determines whether the specified object is an instance of the current Type.
Assembly: mscorlib (in mscorlib.dll)
Syntax . . :: . Boolean
true 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 supports. false if neither of these conditions is the case, or if o isnull Nothing nullptr a null reference (Nothing in Visual Basic) , or if the current Type is an open generic type (that is, ContainsGenericParameters returns true).
. . :: . IsInstanceOfType(Object)
Public Overridable Function IsInstanceOfType ( _
o As Object _
) As Booleanpublic virtual bool IsInstanceOfType(
Object o
)public:
virtual bool IsInstanceOfType(
Object^ o
)abstract IsInstanceOfType :
o:Object -> bool
override IsInstanceOfType :
o:Object -> bool Parameters
- o
- Type: System
. . :: . Object
The object to compare with the current type.
Return Value
Type: Systemtrue 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 supports. false if neither of these conditions is the case, or if o is
Implements
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Note Examples
The following example demonstrates the use of the IsInstanceOfType method.
Imports System
Public Interface IMyIfc
End Interface 'IMyIfc
Public Class [MyClass]
Implements IMyIfc
End Class '[MyClass]
Public Class MyDerivedClass
Inherits [MyClass]
End Class 'MyDerivedClass
Class IsInstanceTest
Public Shared Sub Main()
Dim imyifcType As Type = GetType(IMyIfc)
Dim mc As New [MyClass]()
Dim mcType As Type = mc.GetType()
Dim mdc = New MyDerivedClass()
Dim mdcType As Type = mdc.GetType()
Dim array(10) As Integer
Dim arrayType As Type = GetType(Array)
Console.WriteLine("Is int[] an instance of the Array class? {0}.", arrayType.IsInstanceOfType(array))
Console.WriteLine("Is myclass an instance of MyClass? {0}.", mcType.IsInstanceOfType(mc))
Console.WriteLine("Is myderivedclass an instance of MyClass? {0}.", mcType.IsInstanceOfType(mdc))
Console.WriteLine("Is myclass an instance of IMyIfc? {0}.", imyifcType.IsInstanceOfType(mc))
Console.WriteLine("Is myderivedclass an instance of IMyIfc? {0}.", imyifcType.IsInstanceOfType(mdc))
End Sub 'Main
End Class 'IsInstanceTest
using System;
public interface IMyIfc {}
public class MyClass : IMyIfc {}
public class MyDerivedClass : MyClass {}
class IsInstanceTest
{
public static void Main()
{
Type imyifcType=typeof(IMyIfc);
MyClass mc = new MyClass();
Type mcType = mc.GetType();
MyClass mdc = new MyDerivedClass();
Type mdcType = mdc.GetType();
int [] array = new int [10];
Type arrayType = typeof(Array);
Console.WriteLine("Is int[] an instance of the Array class? {0}.", arrayType.IsInstanceOfType(array));
Console.WriteLine("Is myclass an instance of MyClass? {0}.", mcType.IsInstanceOfType(mc));
Console.WriteLine("Is myderivedclass an instance of MyClass? {0}.", mcType.IsInstanceOfType(mdc));
Console.WriteLine("Is myclass an instance of IMyIfc? {0}.", imyifcType.IsInstanceOfType(mc));
Console.WriteLine("Is myderivedclass an instance of IMyIfc? {0}.", imyifcType.IsInstanceOfType(mdc));
}
}
using namespace System;
interface class IMyIfc{};
public ref class MyClass: public IMyIfc{};
public ref class MyDerivedClass: public MyClass{};
int main()
{
Type^ imyifcType = IMyIfc::typeid;
MyClass^ mc = gcnew MyClass;
Type^ mcType = mc->GetType();
MyClass^ mdc = gcnew MyDerivedClass;
Type^ mdcType = mdc->GetType();
array<Int32>^arr = gcnew array<Int32>(10);
Type^ arrayType = Array::typeid;
Console::WriteLine( "Is Int32[] an instance of the Array class? {0}.", arrayType->IsInstanceOfType( arr ) );
Console::WriteLine( "Is myclass an instance of MyClass? {0}.", mcType->IsInstanceOfType( mc ) );
Console::WriteLine( "Is myderivedclass an instance of MyClass? {0}.", mcType->IsInstanceOfType( mdc ) );
Console::WriteLine( "Is myclass an instance of IMyIfc? {0}.", imyifcType->IsInstanceOfType( mc ) );
Console::WriteLine( "Is myderivedclass an instance of IMyIfc? {0}.", imyifcType->IsInstanceOfType( mdc ) );
}
Platforms
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.