What is the namespace of delegate class objects?
Important Points About Delegates: Provides a good way to encapsulate the methods. Delegates are the library class in System namespace. These are the type-safe pointer of any method.
Which of the following types can be declared within a namespace?
Within a namespace, you can declare zero or more of the following types: class. interface. struct.
What is namespace explain with example?
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 Files\Internet Explorer is the namespace that describes where Internet Explorer files on a Windows computer.
When would you use delegates instead of interfaces?
When should Delegate be used in place of Interface
- If Interface defines only a single method then we should use Delegate.
- If multicast is required.
- If subscriber need to implement the interface multiple times.
How are delegates used in a system namespace?
Delegates are the library class in System namespace. These are the type-safe pointer of any method. Delegates are mainly used in implementing the call-back methods and events. Delegates can be chained together as two or more methods can be called on a single event.
Which is an example of a delegate in C #?
A delegate can refer to a method, which has the same signature as that of the delegate. For example, consider a delegate − public delegate int MyDelegate (string s); The preceding delegate can be used to reference any method that has a single string parameter and returns an int type variable. Syntax for delegate declaration is −
What are the different types of namespaces in C #?
Namespaces are used in C# to organize and provide a level of separation of codes. They can be considered as a container which consists of other namespaces, classes, etc. A namespace can have following types as its members: Namespaces (Nested Namespace) Classes. Interfaces. Structures. Delegates.
How are delegates different from function pointers in C?
Unlike C function pointers, delegates are object-oriented, type safe, and secure. The type of a delegate is defined by the name of the delegate. The following example declares a delegate named Del that can encapsulate a method that takes a string as an argument and returns void: