The difference between ref and out in C#

In this article, we will understand the difference between “ref” and “out” in C#.

Ref Keyword

• Before passing the parameter to 'ref', it needs to be initialized.

• There is no need to initialize the parameter values ​​to the calling method before returning.

• When using the 'ref' keyword, data can be passed in both directions.

• It is useful when the called method needs to change the value of the passed parameter.

Output Keyword

• It is not necessary to initialize the parameters before passing them to "out".

• The parameters need to be initialized before returning them to the caller.

• When a method needs to return multiple values, it is helpful to declare parameters using the "out" keyword.

• When using the "out" keyword, data is only passed in one direction.

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