Demonstrate a reference constraint : Generic Constraint « Generics « C# / C Sharp

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C# / C Sharp » Generics » Generic Constraint Screenshots  Demonstrate a reference constraint using System; class MyClass { } class Test<T> where T : class {   T obj;   public Test() {     // The following statement is legal only     // because T is guaranteed to be a reference     // type, which can be assigned the value null.     obj = null;   }   public void print(){      Console.WriteLine(obj);   } } class ClassConstraintDemo {   public static void Main() {     Test<MyClass> x = new Test<MyClass>();     // The next line is in error because int is     // a value type. //    Test<int> y = new Test<int>();   } }                     Related examples in the same category 1. There are five types of constraints: 2. Combination of Overriding Generic Methods 3. A base class constraint 4. Use an interface constraint 5. A new() constructor constraint 6. Reference Type Constraint: A reference type constraint restricts a type parameter to a reference type. 7. Demonstrate a value type constraint 8. A type parameter can be used as a constraint 9. Reference Type Constraint 10. Default Constructor Constraint 11. Derivation Constraint 12. constructor constraint