Can we make sealed class private?

There is having some differences between private class and sealed class.

+ Private class usually used on inner class, that don't want to external to seeing it, it is created the closure.

For example,

public class Parent { // some thing at here private readonly SubClass sc; // ctor public Parent () {               sc = new SubClass(); } public string foo () { return sc.bar(); } private class SubClass { // have some thing here public string bar() { //.............. return "..........."; } } }

+ Sealed class is meaning: you can't inherit from it, it is a finally class in inherited hierarchy (leaf node).

For examples, in .NET 2.0, Microsoft built HttpContext is a sealed class, and in .NET 3.5 they are wrapper it became HttpContextWrapper for Unit Testing it.

That is my knowledge about 2 of its. If it have any problems, you can post at here, and we shall discuss later.