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What is the real use of delegates in C#?
Delegates are used to define callback methods and implement event handling, and they are declared using the “delegate” keyword. You can declare a delegate that can appear on its own or even nested inside a class. There are three steps in using delegates. These include declaration, instantiation, and invocation.
What are C# delegates used for?
C# delegates are similar to pointers to functions, in C or C++. A delegate is a reference type variable that holds the reference to a method. The reference can be changed at runtime. Delegates are especially used for implementing events and the call-back methods.
How are delegates used in the real world?
So a delegate is just that, and allows that good old pattern to still be used. Here is a simple example that shows how useful delegates can be at creating simple code that follows the DRY principle. It also allows you to keep code extremely close to where it is needed. Here is a real world example of the advantage that delegates provide.
When to use a delegate in a GUI?
GUI code uses delegates to handle events, such as button clicks, window moves. Using the delegate allows you do have a function called whenever the event occurs. An example would be linking a function that saves data to a “Save” button on the interface. When the button gets clicked it is set up to execute the function that saves data.
Is the C # compiler aware of Delegates?
(Technically the CLR is also aware of delegates, and so rather than generating an interface, the C# compiler generates a special “delegate” type, which has support for asynchronous invocation, and manipulating an immutable list of delegates and treating them as a single reference; but in a basic form it could have been done with interfaces.
What is the purpose of a delegate in C #?
The main goal of the representator is to communicate between two parties. The actual definition in C# delegate is meant to do communication between two things. Let me explain what it is a delegate. Now assume for example you have class myclass this class having long-running method.