can you allow class to be inherited but method not overridden

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1.00/5 (2 votes)

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C#

class abc
{

   public virtual void a()
    {
    }
}
class pqr:abc
{
    public override void a()
    {
    }
}

how to protect a() to override by child class

Posted 3-May-14 2:34am

Member-515487

Updated 3-May-14 3:19am

v2

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[no name] 3-May-14 8:39am

yes

Emre Ataseven 3-May-14 11:03am

So why is it virtual?

3 solutions

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José Amílcar Casimiro · Accepted Answer · 2014-05-03T02:51:00

Solution 1

You can use sealed methods.

http://msdn.microsoft.com/en-us/library/aa645769%28v=vs.71%29.aspx[^]

JAFC

Posted 3-May-14 2:51am

José Amílcar Casimiro

Comments

Maciej Los 3-May-14 9:02am

+5

Peter Leow · Accepted Answer · 2014-05-03T02:55:00

Solution 2

use
sealed modifier[^]

Posted 3-May-14 2:55am

Peter Leow

Comments

Maciej Los 3-May-14 9:02am

+5

José Amílcar Casimiro 3-May-14 13:17pm

Thx

Maciej Los · Accepted Answer · 2014-05-03T03:26:00

Solution 3

The second edition of your question totally differs from first one.

I'd suggest you to read this: Inheritance and Derived Classes[^].

Quote:
The base method, which is to be overridden, must be declared as virtual, abstract, or override: it is not possible to override a non-virtual or static method in this way.

Further information:
10.2.5 Static and instance members[^]

Posted 3-May-14 3:26am

Maciej Los

Updated 3-May-14 3:31am

v2

Comments

Peter Leow 3-May-14 10:12am

+5!

Maciej Los 3-May-14 10:23am

Thank you, Peter ;)

José Amílcar Casimiro 3-May-14 13:17pm

+5

Maciej Los 3-May-14 13:56pm

Thank you, Jose ;)

Member-515487 5-May-14 4:25am

not understood can base class method sealed
public sealed virtual void a()
{
}