Func and Action

In C#, both Func and Action are delegates used for handling methods, but they serve different purposes:

• Func: Represents a method that returns a value. It can have up to 16 input parameters and a mandatory return type.

• Action: Represents a method that does not return a value (i.e., void). It can have up to 16 input parameters but no return type.

Examples:

Using Func

Func add = (a, b) => a + b; Console.WriteLine(add(5, 3)); // Output: 8

Here, Func<int,int,int> takes two integers as input and returns an integer.

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Using Action

Action greet = name => Console.WriteLine($"Hello, {name}!"); greet("Jobin"); // Output: Hello, Jobin!

Here, Action takes a single string as input but returns nothing (void).

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Key Takeaways:

1. Use Func when you need a return value.

2. Use Action for operations that perform actions but do not need to return anything.

3. Both support lambda expressions and anonymous methods.