Mega Code Archive
A base class constraint
<![CDATA[
using System;
class MyBase {
public void hello() {
Console.WriteLine("Hello");
}
}
class B : MyBase { }
class C { }
class Test<T> where T : MyBase {
T obj;
public Test(T o) {
obj = o;
}
public void sayHello() {
obj.hello();
}
}
class BaseClassConstraintDemo {
public static void Main() {
MyBase a = new MyBase();
B b = new B();
C c = new C();
Test<MyBase> t1 = new Test<MyBase>(a);
t1.sayHello();
Test<B> t2 = new Test<B>(b);
t2.sayHello();
// The following is invalid because
// C does not inherit MyBase.
// Test<C> t3 = new Test<C>(c); // Error!
}
}
]]>