Is it possible to do the following with generics in C#.NET
public abstract class A
{
public abstract T MethodB<T>(string s);
}
public class C: A
{
public override DateTime MethodB(string s)
{
}
}
i.e. have a generic method in a base class and then use a specific type for that method in a sub class.
The type parameter should be declared with the type, and the subclass will declare the specific type in its inheritance declaration:
public abstract class A<T>
{
public abstract T MethodB(string s);
}
public class C: A<DateTime>
{
public override DateTime MethodB(string s)
{
...
}
}
No.
The reason is that you would be providing implementation only for one special case. The base class requires you to implement a MethodB that can work for any type T. If you implement it only for DateTime and if someone calls, for example, ((A)obj).MethodB<int> then you don't have any implementation that could be used!
