Hi all,

I have a question that I have a mental block on at the moment.

I have two classes which are similar, both containing the same method names
and properties. One class basically constructs the details for a bitmap
graphic based on circles while the other class constructs the details for a
bitmap based on rectangles.

In a controlling class, I have a field variable that can be either one or
the other class mentioned above, based on a setting. I want to use the one
field variable in various parts of the controlling class but the C# compiler
is complaining.

Here is logically what I want to achieve:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~
private Object aaa;

if (condition)
{
MyClass1 aaa = new MyClass1();
}
else
{
MyClass2 aaa = new MyClass2();
}
....
....

aaa.Top = 2;
aaa.Left = 2;
....
....
aaa.Method1();
....
....
aaa.Method2();
....
....
....
aaa.Method3()

and so on.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Is there a way I can only use the one field variable for the method calls?
The only other way I can think of at the moment is use IF()s everywhere in
the controlling class. I want to avoid that if possible. Is there a simpler
solution?


Regards,
Neville Lang

Define an interface with the common methods and implement it in the two
classes.

Cheers
Daniel
--
http://www.danielmoth.com/Blog/


"Neville Lang" <neville@MAPS_ONnjlsoftware.com> wrote in message
news:ub%(E-Mail Removed)...
> Hi all,
>
> I have a question that I have a mental block on at the moment.
>
> I have two classes which are similar, both containing the same method
> names
> and properties. One class basically constructs the details for a bitmap
> graphic based on circles while the other class constructs the details for
> a
> bitmap based on rectangles.
>
> In a controlling class, I have a field variable that can be either one or
> the other class mentioned above, based on a setting. I want to use the one
> field variable in various parts of the controlling class but the C#
> compiler
> is complaining.
>
> Here is logically what I want to achieve:
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> private Object aaa;
>
> if (condition)
> {
> MyClass1 aaa = new MyClass1();
> }
> else
> {
> MyClass2 aaa = new MyClass2();
> }
> ...
> ...
>
> aaa.Top = 2;
> aaa.Left = 2;
> ...
> ...
> aaa.Method1();
> ...
> ...
> aaa.Method2();
> ...
> ...
> ...
> aaa.Method3()
>
> and so on.
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Is there a way I can only use the one field variable for the method calls?
> The only other way I can think of at the moment is use IF()s everywhere in
> the controlling class. I want to avoid that if possible. Is there a
> simpler
> solution?
>
>
> Regards,
> Neville Lang
>
>

Daniel,

Thank you for your information.

Regards,
Neville Lang



"Daniel Moth" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Define an interface with the common methods and implement it in the two
> classes.
>
> Cheers
> Daniel
> --
> http://www.danielmoth.com/Blog/
>
>
> "Neville Lang" <neville@MAPS_ONnjlsoftware.com> wrote in message
> news:ub%(E-Mail Removed)...
> > Hi all,
> >
> > I have a question that I have a mental block on at the moment.
> >
> > I have two classes which are similar, both containing the same method
> > names
> > and properties. One class basically constructs the details for a bitmap
> > graphic based on circles while the other class constructs the details
for
> > a
> > bitmap based on rectangles.
> >
> > In a controlling class, I have a field variable that can be either one
or
> > the other class mentioned above, based on a setting. I want to use the
one
> > field variable in various parts of the controlling class but the C#
> > compiler
> > is complaining.
> >
> > Here is logically what I want to achieve:
> >
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > private Object aaa;
> >
> > if (condition)
> > {
> > MyClass1 aaa = new MyClass1();
> > }
> > else
> > {
> > MyClass2 aaa = new MyClass2();
> > }
> > ...
> > ...
> >
> > aaa.Top = 2;
> > aaa.Left = 2;
> > ...
> > ...
> > aaa.Method1();
> > ...
> > ...
> > aaa.Method2();
> > ...
> > ...
> > ...
> > aaa.Method3()
> >
> > and so on.
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> > Is there a way I can only use the one field variable for the method
calls?
> > The only other way I can think of at the moment is use IF()s everywhere
in
> > the controlling class. I want to avoid that if possible. Is there a
> > simpler
> > solution?
> >
> >
> > Regards,
> > Neville Lang
> >
> >
>