C# Generic Class

Generic Class:

Generics allow you to define a class with placeholders for the type of its fields, methods, parameters, etc. Generics replace these placeholders with some specific type at compile time.

A generic class can be defined using angle brackets <>. For example, the following is a simple generic class with a generic member variable, generic method and property.

Code:

1. using System;  
2. using System.Collections.Generic;  
3. using System.Linq;  
4. using System.Text;  
5. using System.Threading.Tasks;  
6.   
7. namespace genericClass  
8. {  
9.     class genericDemo  
10.     {  
11.         public void add<T>(T a, T b)  
12.         {  
13.             dynamic d1 = a; //Dynamic define type in run time.......  
14.             dynamic d2 = b;  
15.             Console.WriteLine(d1+d2);  
16.         }  
17.   
18.         public void sub<T>(T a, T b)  
19.         {  
20.             dynamic d1 = a;  
21.             dynamic d2 = b;  
22.             Console.WriteLine(d1 - d2);  
23.         }  
24.   
25.         public void mul<T>(T a, T b)  
26.         {  
27.             dynamic d1 = a;  
28.             dynamic d2 = b;  
29.             Console.WriteLine(d1 * d2);  
30.         }  
31.   
32.         public void div<T>(T a, T b)  
33.         {  
34.             dynamic d1 = a;  
35.             dynamic d2 = b;  
36.             Console.WriteLine(d1 / d2);  
37.         }  
38.     }  
39. }  
40.   
41. //Main class....  
42.   
43. using System;  
44. using System.Collections.Generic;  
45. using System.Linq;  
46. using System.Text;  
47. using System.Threading.Tasks;  
48.   
49. namespace genericClass  
50. {  
51.     class Program  
52.     {  
53.   
54.         static void Main(string[] args)  
55.         {  
56.               
57.             genericDemo gDemo = new genericDemo();  
58.   
59.             gDemo.add<int>(11,11);  
60.             gDemo.add<double>(11.45, 12.33);  
61.             gDemo.sub<int>(12, 7);  
62.             gDemo.mul<double>(11.45, 12.77);  
63.             gDemo.div<int>(33, 12);  
64.             gDemo.add<string>("Sujan","Hasan");  
65.   
66.             Console.ReadKey();  
67.         }  
68.     }  
69. }