"Du Dang" <vietquest@hotmail.com> wrote in message
news:FCb0c.3522$mx4.86511@nnrp1.uunet.ca...
> class Base
> {
> public Base (string str)
> {
> Console.WriteLine(str);
> }
> }
>
> class Derived : Base
> {
> public Derived (int i)
> {
> // do some thing here based on "i" to generate a
> string
> base ("some string"); <- this does work
> }
> }
>
> ==================
>
> // i know something like this would work .. but this is not what i need
> public Derived (string msg) : base (msg) {
> }
>
> thanks for any suggestion
>
>
>

> class Base
> {
> public Base (string str)
> {
> Console.WriteLine(str);
> }
> }
>
> class Derived : Base
> {
> public Derived (int i)
> {
> // do some thing here based
> // on "i" to generate a string
>
> base ("some string");
> }
> }
>
> ==================
>
> // i know something like this would work ..
> // but this is not what i need
> public Derived (string msg) : base (msg) {
> }

"Bjorn Abelli" <bjorn_abelli@DoNotSpam.hotmail.com> wrote in message
news:O5zsUGr$DHA.4028@tk2msftngp13.phx.gbl...
>
> "Du Dang" ...
>
> > class Base
> > {
> > public Base (string str)
> > {
> > Console.WriteLine(str);
> > }
> > }
> >
> > class Derived : Base
> > {
> > public Derived (int i)
> > {
> > // do some thing here based
> > // on "i" to generate a string
> >
> > base ("some string");
> > }
> > }
> >
> > ==================
> >
> > // i know something like this would work ..
> > // but this is not what i need
> > public Derived (string msg) : base (msg) {
> > }
>
> As many others has said, nothing can proceed the call to the base
> constructor within a constructor in a devived class.
>
> There is however a solution, which could or could not work for you,
> depending on how you want to convert the int to a string.
>
> class Base
> {
> public Base(string str)
> {
> Console.WriteLine(str);
> }
> }
>
> class Derived : Base
> {
> public Derived (int i) : base(ConvertingMethod(i))
> {
> }
>
> static string ConvertingMethod(int i)
> {
> // Do some converting...
> return "X" + i;
> }
> }
>
> NB! The converting method has to be static, as you can't reach any
instance
> attributes, methods or properties until the base constructor has
finished...
>
> // Bjorn A
>
>