Can we used return type in static method in c#

Hi,

• Yes, in your example void is return type. void will going to return nothing.
• static methods can be defined using the static keyword before a return type and after an access modifier 

Regards,

Amit 

yes we can, refer below example, 

using System;

namespace ArithmeticOperation
{
    class Program
    {
        private delegate double Operation(double num1, double num2);

        private static void Main(string[] args)
        {
            Console.Write("Input number 1: ");
            var num1 = double.Parse(Console.ReadLine());

            Console.Write("Input number 2: ");
            var num2 = double.Parse(Console.ReadLine());

            Console.Write("Input operation (+,*,/,- or max): ");
            var op = Console.ReadLine().Trim();

            Operation operation;
            switch (op)
            {
                case "+":
                    operation = ArithmeticOperation.AddNumbers;
                    break;
                case "*":
                    operation = ArithmeticOperation.MultiplyNumbers;
                    break;
                case "/":
                    operation = ArithmeticOperation.DivideNumbers;
                    break;
                case "-":
                    operation = ArithmeticOperation.SubtractNumbers;
                    break;
                case "max":
                    operation = ArithmeticOperation.FindMaxNumber;
                    break;
                default:
                    Console.WriteLine("Error: operation is no supported");
                    return;                    
            }
            var result = operation(num1, num2);
            Console.WriteLine($"Result: {result}");
        }
    }

    public class ArithmeticOperation
    {
        public static double AddNumbers(double num1, double num2) => num1 + num2;
        public static double MultiplyNumbers(double num1, double num2) => num1 * num2;
        public static double DivideNumbers(double num1, double num2) => num1 / num2;
        public static double SubtractNumbers(double num1, double num2) => num1 - num2;
        public static double FindMaxNumber(double num1, double num2) => num1 >= num2 ? num1 : num2;        
    }
}