Why will we use delegate over function in C#

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C#

We can perform same thing using delegate and function. So Where will we use delegate and where will we use function.

Posted 21-Jan-16 20:28pm

Anshuman Mondal

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BillWoodruff 22-Jan-16 5:08am

When you use the word 'function, if you are referring to the type of Delegate in C# named 'Func, then please let us know.

3 solutions

Solution 3

The delegate object can then be passed to code which can call the referenced method, without having to know at compile time which method will be invoked.

Delegates are especially used for implementing events and the call-back methods.

Posted 22-Jan-16 17:33pm

Avik Ghosh22

Updated 22-Jan-16 17:34pm

v2

Solution 2

A function is the norm. Use delegates where a function doesn't work, like here.

Posted 21-Jan-16 22:20pm

lukeer

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CPallini · Accepted Answer · 2016-01-21T20:55:00

Solution 1

Roughly speaking a delegate is like a function pointer, that is a way to indirectly call a method.
As an example, see my solution to another question: "how to call multiple methods using loop, please help"[^].
More details, for instance, here: oop - Where do I use delegates? - Stack Overflow[^].

Posted 21-Jan-16 20:55pm

CPallini

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BillWoodruff 22-Jan-16 23:44pm

+5 Sometimes I wonder if it's useful (for newcomers) to refer to a Delegate as an indirect reference to a Method, to stress that a Method (in C#) only "exposes" an "executable interface," and the Delegate construct is required to be able to use it without immediate execution.