Hii
I have method in C#, I have to return multiple values from that method with out using collections like arrays. Is there any reliable way ?
2
-
Can you please expand on "multiple values"? Is it a constant number of your return values? Are they linked logically? What to they represent? Are they in the same type?Kobi– Kobi2010-05-27 06:30:06 +00:00Commented May 27, 2010 at 6:30
-
Possible duplicate of How can I return multiple values from a function in C#?Michael Freidgeim– Michael Freidgeim2016-06-03 23:18:56 +00:00Commented Jun 3, 2016 at 23:18
Add a comment
|
7 Answers
Yes, the out keyword:
public void ReturnManyInts(out int int1, out int int2, out int int3)
{
int1 = 10;
int2 = 20;
int3 = 30;
}
then call it like this:
int i1, i2, i3;
ReturnManyInts(out i1, out i2, out i3);
Console.WriteLine(i1);
Console.WriteLine(i2);
Console.WriteLine(i3);
which outputs:
10
20
30
EDIT:
I'm seeing that a lot of posts are suggesting to create your own class for this. This is not necessary as .net provides you with a class to do what they are saying already. The Tuple class.
public Tuple<int, string, char> ReturnMany()
{
return new Tuple<int, string, char>(1, "some string", 'B');
}
then you can retrieve it like so:
var myTuple = ReturnMany();
myTuple.Item1 ...
myTuple.Item2 ...
there are generic overloads so you can have up to 8 unique types in your tuple.
2 Comments
Bryan Watts
Also, the
Tuple.Create method can infer the types: return Tuple.Create(1, "some string", 'B');
Daniel Rose
Note that Tuple is a new feature of .NET 4.0, which Jibu may not (yet) have.
Well, you could use:
- a custom class/struct/type, containing all your values
outparameters
I.e.:
class MyValues
{
public string Val1 { get; set; }
public int Val2 {get; set; }
}
public MyValues ReturnMyValues();
or
public void ReturnMyValues(out string Val1, out int Val2);
Comments
If you are using .NET 4.0 you can use one of the generic Tuple classes to return multiple values from a method call. The static Tuple class provides methods to create Tuple objects. So you do not have to define your own return type for the method.
public Tuple<string,int> Execute()
{
return new Tuple<string,int>("Hello World", 2);
}
Comments
Yes could create a new type that will contain multiple properties and then return this type:
public MyType MyMethod()
{
return new MyType
{
Prop1 = "foo",
Prop2 = "bar"
};
}
Comments
A Descriptor class, or structure. You must put it somewhere as it's logical that a method must return only one value. Alternatively you can use out or ref, but i would go returning a class.
Btw what's holding you not to use collections?.
Comments
public int Method Name(out string stringValue, out int intValue)
{
///
Method goes here
///
return intVaraible
}
here you will get 3 return Values 1. stringValue 2. intValue 3. intVariable
