Can I return more than one value from a method without creating a class for the return type or OUT params?

Question

If I have a method like this:

private void RunExecute()
{
    var rc1 = doStuff(2);
    var rc2 = doStuff(1);
}

Is there any way that I can return both rc1 and rc2 instead of the void without creating a special class and using that as the return type and without declaring rc1 and rc2 as out parameters?

Refer this answer: https://stackoverflow.com/a/36436255/193634 — Rosdi Kasim, Jan 14 '19 at 12:19

Anu Viswan · Accepted Answer · 2019-01-14T15:03:15.217

5

You can use Tuples

private (T,T) RunExecute()
{
    var rc1 = doStuff(2);
    var rc2 = doStuff(1);
    return (rc1,rc2)
}

Where T is type returned by doStuff

For example, if doStuff return int,

private (int,int) RunExecute()

To call the method and use the results, you can make use of the syntax

var (p1,p2) = RunExecute();

An alternative approach using Tuples is naming the Tuple elements. For example, during declaration.

private (int returnValue1,int returnValue2) RunExecute()

and calling it.

var result  = RunExecute();
Console.WriteLine(result.returnValue1);
Console.WriteLine(result.returnValue2);

PS: If you are using C# <7.0, you would have to limit yourself to following syntax.

private Tuple<int, int> RunExecute()

edited Jan 14 '19 at 15:03

answered Jan 14 '19 at 12:12

Anu Viswan

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Can you show an example of how I would call and use RunExecute. Thanks – Alan2 Jan 14 '19 at 12:16
1

@Alan2 I have updated the answer with Method call and how to fetch the result. Kindly check – Anu Viswan Jan 14 '19 at 12:18

Can I return more than one value from a method without creating a class for the return type or OUT params?

1 Answers1