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How can we return multiple values from a function in C#?
In c# multiple values can be returned using the below approaches −
Reference parameters
Output parameters
Returning an Array
Returning a Tuple
Reference parameters
Example
class Program{
static int ReturnMultipleValuesUsingRef(int firstNumber, ref int secondNumber){
secondNumber = 20;
return firstNumber;
}
static void Main(){
int a = 10;
int refValue = 0;
var res = ReturnMultipleValuesUsingRef(a, ref refValue);
System.Console.WriteLine($" Ref Value {refValue}");
System.Console.WriteLine($" Function Return Value {res}");
Console.ReadLine();
}
}Output
Ref Value 20 Function Return Value 10
Output parameters
Example
class Program{
static int ReturnMultipleValuesUsingOut(int firstNumber, out int secondNumber){
secondNumber = 20;
return firstNumber;
}
static void Main(){
int a = 10;
int outValue = 0;
var res = ReturnMultipleValuesUsingOut(a, out outValue);
System.Console.WriteLine($" Out Value {outValue}");
System.Console.WriteLine($" function Return Value {res}");
Console.ReadLine();
}
}Output
Out Value 20 Function Return Value 10
Returning Arrays
Example
class Program{
static int[] ReturnArrays(){
int[] arrays = new int[2] { 1, 2 };
return arrays;
}
static void Main(){
var res = ReturnArrays();
System.Console.WriteLine($"{res[0]} {res[1]}");
Console.ReadLine();
}
}Output
1 2
Returning Tuple
Example
class Program{
static Tuple<int, int>ReturnMulitipleVauesUsingTuples(){
return new Tuple<int, int>(10, 20);
}
static void Main(){
var res = ReturnMulitipleVauesUsingTuples();
System.Console.WriteLine($"{res.Item1} {res.Item2}");
Console.ReadLine();
}
}Output
10 20
Updated on: 04-Aug-2020
2K+ Views
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