Type.IsSubclassOf Method

Parameters

• c
  Type: System.Type
  The Type to compare with the current Type.

Return Value

Type: System.Boolean
true if the Type represented by the c parameter and the current Type represent classes, and the class represented by the current Type derives from the class represented by c; otherwise, false. This method also returns false if c and the current Type represent the same class.

Public Class Class1
End Class

Public Class DerivedC1
   Inherits Class1
End Class

Class Example

   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      Dim myC1 As Class1 = New Class1
      Dim myDClass As DerivedC1 = New DerivedC1
      Dim myClassType As Type = myC1.GetType
      Dim myDClassType As Type = myDClass.GetType

      ' Returns true:
      outputBlock.Text += String.Format("myDClass subclass of myClass: {0}", myDClassType.IsSubclassOf(myClassType)) & vbCrLf
   End Sub
End Class

using System;

public class Class1 { }
public class DerivedC1 : Class1 { }

class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      Class1 myClass = new Class1();
      DerivedC1 myDClass = new DerivedC1();
      Type myClassType = myClass.GetType();
      Type myDClassType = myDClass.GetType();

      // Returns true:
      outputBlock.Text += String.Format("myDClass subclass of myClass: {0}", myDClassType.IsSubclassOf(myClassType)) + "\n";
   }
}