how can i overload abstract constructor in derive calss
i have a abstract constructor and one derive class like

    abstract ab{
    ab();
    }

    class dc{
    dc();
    }

i want to execute 1st constructor of derived and then execute constructor of abstract class

please give me the example..?

thanks 
Bikash rajan
how can i overload abstract constructor in derive calss
===

i have a abstract constructor and one derive class like

    abstract ab{
    ab();
    }

    class dc{
    dc();
    }

i want to execute 1st constructor of derived and then execute constructor of abstract class

please give me the example..?

thanks 
Bikash rajan