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What are generic methods in C#?
Generics allow you to write a class or method that can work with any data type. Declare a generic method with a type parameter −
static void Swap(ref T lhs, ref T rhs) {}To call the above shown generic method, here is an example −
Swap(ref a, ref b);
Let us see how to create a generic method in C# −
Example
using System;
using System.Collections.Generic;
namespace Demo {
class Program {
static void Swap(ref T lhs, ref T rhs) {
T temp;
temp = lhs;
lhs = rhs;
rhs = temp;
}
static void Main(string[] args) {
int a, b;
char c, d;
a = 45;
b = 60;
c = 'K';
d = 'P';
Console.WriteLine("Int values before calling swap:");
Console.WriteLine("a = {0}, b = {1}", a, b);
Console.WriteLine("Char values before calling swap:");
Console.WriteLine("c = {0}, d = {1}", c, d);
Swap(ref a, ref b);
Swap(ref c, ref d);
Console.WriteLine("Int values after calling swap:");
Console.WriteLine("a = {0}, b = {1}", a, b);
Console.WriteLine("Char values after calling swap:");
Console.WriteLine("c = {0}, d = {1}", c, d);
Console.ReadKey();
}
}
}Output
Int values before calling swap: a = 45, b = 60 Char values before calling swap: c = K, d = P Int values after calling swap: a = 60, b = 45 Char values after calling swap: c = P, d = K
Updated on: 20-Jun-2020
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