Delegates in C# .NET

Delegates in C# are objects which points towards a function which matches its signature. Delegates are reference type used to encapsulate a method with a specific signature. Delegates are similar to function pointers in C++; however, delegates are type-safe and secure.
Here are some features of delegates:

• A delegate represents a class.
• A delegate is type-safe.
• We can use delegates both for static and instance methods
• We can combine multiple delegates into a single delegate.
• Delegates are often used in event-based programming, such as publish/subscribe.
• We can use delegates in asynchronous-style programming.
• We can define delegates inside or outside of classes.

Syntax of using delegates
//Declaring delegate
delegate void SampleDelegate(string message);
// declare method with same signature:
static void SampleDelegateMethod(string message) { Console.WriteLine(message); }
// create delegate object
SampleDelegate d1 = SampleDelegateMethod;
// Invoke method with delegate
d1("my program");

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