you can create instance of sealed class but not in static class.

The below code will help you to distinguish the difference between a sealed class and a static class.You should use .net framework 2.0 to compile and run the code->

namespace Static_Sealed

{

/* Static Class Declarartion */

public static class statClass

{

public static int valA;

public static int valB;

public static int Add() { return (valA + valB); }

}

/* Sealed Class Declarartion */

sealed class sealedClass

{

int a, b;

sealedClass()

{

a = b = 0;

}

/*Method return the sum value of private variables a & b*/

public int GetValue(int a, int b)

{

this.a = a;

this.b = b;

return (this.a + this.b);

}

[STAThread]

static void Main(string[] args)

{

/* Create the instance of sealed class*/

sealedClass objClass1 = new sealedClass();

/*Calling the method of sealed class*/

int Value1 = objClass1.GetValue(3, 4);

/*Print the value*/

Console.WriteLine("Sealed Class:The value is :" + Value1);

/* Initialize the memeber of static class*/

statClass.valA = 9;

statClass.valB = 10;

/*Calling the static method of static class*/

int Value2 = statClass.Add();

/*Print the value*/

Console.WriteLine("Static Class:The value is :" + Value2);

}

}

}

You need the class name to access the members and methods of static class whereas in case of sealed class you can create the instance of it.