A nongeneric class can be the base class of a generic derived class : Generic Hiearchy « Generic « C# / CSharp Tutorial

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C# / CSharp Tutorial » Generic » Generic Hiearchy 
18.16.3.A nongeneric class can be the base class of a generic derived class
using System; 
 
class NonGen 
  int num; 
 
  public NonGen(int i) { 
    num = i; 
  
 
  public int getnum() { 
    return num; 
  

 
class Gen<T> : NonGen {  
  T ob; 
    
  public Gen(T o, int i: base (i) {  
    ob = o;  
  }  
  
  public T getob() {  
    return ob;  
  }  
}  
  
class MainClass {  
  public static void Main() {  
    Gen<String> w = new Gen<String>("Hello"4)
    
    Console.Write(w.getob() " ")
    Console.WriteLine(w.getnum())
  }  
}
Hello 4
18.16.Generic Hiearchy
18.16.1.A simple generic class hierarchy
18.16.2.A derived class can add its own type parameters
18.16.3.A nongeneric class can be the base class of a generic derived class
18.16.4.Overriding a virtual method in a generic class
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