Operator C# Tutorial

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using System;
using System.IO;
class MainClass
{
    public static void Main() 
    {
        Object someObject = new StringReader("This is a StringReader");
        
        if (someObject is TextReader) 
        {
            Console.WriteLine(
                "is: someObject is a TextReader or a derived class");
        }
    }
}
is: someObject is a TextReader or a derived class