How do you make a class accessible only within the namespace?

You can only restrict the access to the assembly containing the class using the internal modifier. You could also restrict the access to the class to a single class by making the class a nested class. E.g. if you make class B a private nested class in class A, B will only be accessible by A.

Can we declare private class in namespace?

No, Allowing classes to be private to a namespace would achieve no meaningful level of protection. If you force to create a private class in Namespace, compiler will throw a compile time error “Namespace elements cannot be explicitly declared as private, protected or protected internal” .

Can we declare a class as protected C#?

4 Answers. Note that you cannot declare any outer class as private, protected (or protected internal) in c# since the access modifier for outer level classes defines their visibility in relation to other assemblies.

What can be declared in a namespace C#?

In C#, namespaces are used to logically arrange classes, structs, interfaces, enums and delegates. The namespaces in C# can be nested. That means one namespace can contain other namespaces also. In C#, namespaces are used to logically arrange classes, structs, interfaces, enums and delegates.

Can we create instance of private class in C#?

Yes, it can.

What is the difference between private class and sealed class in C#?

Private Vs sealed class Private classes cannot be declared directly inside the namespace. Sealed classes can be declared directly inside the namespace. Private Class members are only accessible within a declared class. Sealed class members are accessible outside the class through object.

Why classes Cannot be declared as protected?

Since there is no way to restrict this class being subclassed by only few classes (we cannot restrict class being inherited by only few classes out of all the available classes in a package/outside of a package), there is no use of protected access specifiers for top level classes. Hence it is not allowed.

How do you inherit a class into another class in C#?

In C#, it is possible to inherit fields and methods from one class to another. We group the “inheritance concept” into two categories: Derived Class (child) – the class that inherits from another class. Base Class (parent) – the class being inherited from.

Is namespace mandatory in C#?

There is no need to have a namespace. However developer studio expects you to be using a name space. For example, when you choose to add a class to a project developer studio will: Create a file for the class.

What is exception handling in C# with example?

C# exception handling is built upon four keywords: try, catch, finally, and throw. try − A try block identifies a block of code for which particular exceptions is activated….Exception Classes in C#

Sr.No.	Exception Class & Description
1	System.IO.IOException Handles I/O errors.