C# Program to Check a Class is a Sub-Class of a Specified Class or Not

// C# program to check whether a class is
// a sub-class of a specified class or not
using System;

// Create a class named Geeks
public class Geeks{}

// Create a subclass that is from Geeks class
public class smallGFG : Geeks{}

// Create a class named mygg
public class mygg{}

class GFG{
    
// Drived code
public static void Main()
{
    
    // Check the class is a subclass of the class
    // Using IsSubclassOf() method
    Console.WriteLine(typeof(smallGFG).IsSubclassOf(typeof(Geeks)));
    Console.WriteLine(typeof(Geeks).IsSubclassOf(typeof(smallGFG)));
    Console.WriteLine(typeof(mygg).IsSubclassOf(typeof(Geeks)));
}
}

// C# program to check whether a class is
// a sub-class of a specified class or not
using System;

// Create a class named Geeks
public class Mypet
{
    public void color()
    {
        Console.WriteLine("I like pink color hair");
    }
}

// Create a subclass that is from Mypet class
public class Dog : Mypet{}

class GFG{
    
// Driver code
public static void Main()
{
  
    // Check the class is a subclass of the class
    // Using IsSubclassOf() method
    if (typeof(Dog).IsSubclassOf(typeof(Mypet)) == true)
    {
        Console.WriteLine("Given class is a sub class");
    }
    else
    {
        Console.WriteLine("Given class is not a sub class");
    }
}
}