What is namespace in C# Interview Questions?

What is namespace in C#? A namespace is designed for providing a way to keep one set of names separate from another. The class names declared in one namespace does not conflict with the same class names declared in another.

Then, what is a namespace in C#?

Namespaces are used to provide a "named space" in which your application resides. They're used especially to provide the C# compiler a context for all the named information in your program, such as variable names. Without namespaces, for example, you wouldn't be able to make a class named Console, as .

Furthermore, what is namespace in .NET framework? NET framework or in your own programs, namespaces are used. A namespace simply provides a named group of classes, structures, enumerations, delegates, interfaces and other namespaces. Within the namespace, all declared items must be uniquely named. However, the same name may be duplicated in different namespaces.

Besides, what are Generics in C# Interview Questions?

NET Generics interview questions: - Explain Generics and concept of Generic Collection in . NET? Generics help to separate logic and data type to increase reusability. In other words you can create a class whose data type can be defined on run time.

Is namespace required 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.

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What is namespace example?

Namespace. A namespace is a group of related elements that each have a unique name or identifier. A file path, which uses syntax defined by the operating system, is considered a namespace. For example, C:Program FilesInternet Explorer is the namespace that describes where Internet Explorer files on a Windows computer

What is the purpose of namespace?

A namespace is a declarative region that provides a scope to the identifiers (the names of types, functions, variables, etc) inside it. Namespaces are used to organize code into logical groups and to prevent name collisions that can occur especially when your code base includes multiple libraries.

What is the default namespace in C#?

The root namespace is also the default namespace for C# programs.

What is the difference between class and namespace?

Classes are data types. They are an expanded concept of structures, they can contain data members, but they can also contain functions as members whereas a namespace is simply an abstract way of grouping items together. Using a class implies that you can create an instance of that class, not true with namespaces.

Is namespace mandatory in C#?

For now we will stick with classes and namespaces. Namespaces are not mandatory in a C# program, but they do play an important role in writing cleaner codes and managing larger projects. Namespace also solves the problem of naming conflict. Two or more classes when put into different namespaces can have same name.

Can you have more than one namespace in C#?

Two classes with the same name can be created inside 2 different namespaces in a single program. Inside a namespace, no two classes can have the same name. In C#, the full name of the class starts from its namespace name followed by dot(.)

What are value types in C#?

C# - Data Types. Value types include simple types (e.g. int, float, bool, and char), enum types, struct types, and Nullable value types. Reference types include class types, interface types, delegate types, and array types.

What is meant by C#?

C# is a hybrid of C and C++, it is a Microsoft programming language developed to compete with Sun's Java language. C# is an object-oriented programming language used with XML-based Web services on the . NET platform and designed for improving productivity in the development of Web applications.

Why are generics used?

Why Use Generics? In a nutshell, generics enable types (classes and interfaces) to be parameters when defining classes, interfaces and methods. Stronger type checks at compile time. A Java compiler applies strong type checking to generic code and issues errors if the code violates type safety.

What is type safe in C#?

C# language is a type safe language. Type safety in . NET has been introduced to prevent the objects of one type from peeking into the memory assigned for the other object. Writing safe code also means to prevent data loss during conversion of one type to another.

Why do we need Generics in C#?

Generics in C# is its most powerful feature. It allows you to define the type-safe data structures. Generic types perform better than normal system types because they reduce the need for boxing, unboxing, and type casting the variables or objects. Parameter types are specified in generic class creation.

What are the benefits of using generics in C#?

Features of Generics:

It helps you to maximize code reuse, type safety, and performance.
You can create generic collection classes.
You can create your own generic interfaces, classes, methods, events, and delegates.
You may create generic classes constrained to enable access to methods on particular data types.

What is the difference between ref & out parameters in C#?

The out is a keyword in C# which is used for the passing the arguments to methods as a reference type. It is generally used when a method returns multiple values. The out parameter does not pass the property. The ref is a keyword in C# which is used for the passing the arguments by a reference.

What is the difference between interface and abstract class in C#?

In C#, an Interface provides only those public services declared in the interface, whereas an abstract class provides the public services defined in an abstract class and those members that are inherited from the abstract class's base class.

What is abstract class in C#?

C# abstract class explained

An abstract class is a special type of class that cannot be instantiated. An abstract class is designed to be inherited by subclasses that either implement or override its methods. In other words, abstract classes are either partially implemented or not implemented at all.

What is serialization in C#?

Serialization is the process of converting an object into a stream of bytes to store the object or transmit it to memory, a database, or a file. Its main purpose is to save the state of an object in order to be able to recreate it when needed. The reverse process is called deserialization.

What is static class in C#?

C# static keyword is used to create a static class. A static class in C# is a class that cannot be instantiated. A static class can only contain static data members including static methods, static constructors, and static properties.