code1:
------------------------------------------------------------------
// cs_modifier_new.cs
// The new modifier.
using System;
public class BaseC 
{
    public static int x = 55;
    public static int y = 22;
}

public class DerivedC : BaseC 
{
    // Hide field 'x'
    new public static int x = 100;

    static void Main() 
    {
        // Display the new value of x:
        Console.WriteLine(x);
        // Display the hidden value of x:
        Console.WriteLine(BaseC.x);
        // Display the unhidden member y:
        Console.WriteLine(y);
    }
}

output1:
------------------------------------------------------------------
100
55
22

code2:
------------------------------------------------------------------
// cs_modifer_new_nested.cs
// Using the new modifier with nested types.
using System;
public class BaseC 
{
    public class NestedC 
    {
        public int x = 200;
        public int y;
    }
}

public class DerivedC : BaseC 
{
    // Nested type hiding the base type members.
    new public class NestedC   
    {
        public int x = 100;
        public int y; 
        public int z;
    }

    static void Main() 
    {
        // Creating an object from the overlapping class:
        NestedC c1  = new NestedC();

        // Creating an object from the hidden class:
        BaseC.NestedC c2 = new BaseC.NestedC();

        Console.WriteLine(c1.x);
        Console.WriteLine(c2.x);   
    }
}


output2:
------------------------------------------------------------------
100
200