CODEWITHSUNDEEP
c#
subbu
subbu

Reputation: 3289

Pass by Reference in C#

How to pass a parameter as a Reference in C# and when calling the function how should i represent it while defining that particular function

Upvotes: 3

Views: 13450

Answers (6)

Jon Skeet
Jon Skeet

Reputation: 1499770

As others have said, you should use the ref modifier at both the call site and the method declaration to indicate that you want to use by-reference semantics. However, you should understand how by-value and by-reference semantics interact with the "value type" vs "reference type" model of .NET.

I have two articles on this:

Upvotes: 11

Amr Badawy
Amr Badawy

Reputation: 7673

you can also reference types without need to user ref keyword
For example you can bass an instance of Class to a method as a parameter without ref keyword

Upvotes: 0

this. __curious_geek
this. __curious_geek

Reputation: 43207

Just add ref keyword as prefix to all arguments in the function definition. Put ref keyword prefix in arguments passed while calling the function.

Upvotes: 0

Joseph
Joseph

Reputation: 25513

Here's an example of passing an int by reference:

void DoubleInt(ref int x)
{
    x += x;
}

and you would call it like this:

DoubleInt(ref myInt);

Here's an msdn article about passing parameters.

Upvotes: 13

Martin Marconcini
Martin Marconcini

Reputation: 27226

I suggest you take a look at the MSDN documentation about this. It's very clear.

Upvotes: 2

David Basarab
David Basarab

Reputation: 73301

You can use the ref keyword to pass an object by refence.

public void YourFunction(ref SomeObject yourReferenceParameter)
{
    // Do something 
}

When you call it you are also required to give the ref keyword.

SomeObject myLocal = new SomeObject();

YourFunction(ref myLocal);

Upvotes: 5

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