static virtual

[Mark]

I know that you can't have a static virtual property, but is there a
way to simulate the same results?

I have a base class that I want to extend so that you can change a
value and it inherits all of the methods to work with that value.
That's easy enough:

class BaseC {
string val;

public DoSomething() {
//manipulate val
}
}

class Derived : BaseC {
public Derived() {
val = "foo"
}
}

Derived.DoSomething() now manipulates "foo"

Now if I want BaseC to have static methods, that also manipulate
'val', I have to make val static. But when I have multiple derived
classes with static constructors, the static variable is for all of
the derived classes (bad).

I thought I could make static virtual properties that could just be
overloaded in the derived classes to return the correct value, but as
I stated, static virtual is not allowed.

Any Ideas?
Mark

[Rakesh Rajan]

Try using the singleton design pattern. Make the Base a singleton. When
derived types get constructed, a single base is created for that derv
instance exclusively. This derv instance could manipulate the variable
originally defined in Base, and would not meddle with other derv's definition
as well.

"Mark" wrote:

I know that you can't have a static virtual property, but is there a
way to simulate the same results?

I have a base class that I want to extend so that you can change a
value and it inherits all of the methods to work with that value.
That's easy enough:

class BaseC {
string val;

public DoSomething() {
//manipulate val
}
}

class Derived : BaseC {
public Derived() {
val = "foo"
}
}

Derived.DoSomething() now manipulates "foo"

Now if I want BaseC to have static methods, that also manipulate
'val', I have to make val static. But when I have multiple derived
classes with static constructors, the static variable is for all of
the derived classes (bad).

I thought I could make static virtual properties that could just be
overloaded in the derived classes to return the correct value, but as
I stated, static virtual is not allowed.

Any Ideas?
Mark

[RayO]

I don't see how static virtual makes any sense.
How do you expect to manipulate instance variables of
a class from static methods of the same class?!?!
RayO
"Mark" <ma*****@rit.edu> wrote in message
news:d4**************************@posting.google.c om...

I know that you can't have a static virtual property, but is there a
way to simulate the same results?

I have a base class that I want to extend so that you can change a
value and it inherits all of the methods to work with that value.
That's easy enough:

class BaseC {
string val;

public DoSomething() {
//manipulate val
}
}

class Derived : BaseC {
public Derived() {
val = "foo"
}
}

Derived.DoSomething() now manipulates "foo"

Now if I want BaseC to have static methods, that also manipulate
'val', I have to make val static. But when I have multiple derived
classes with static constructors, the static variable is for all of
the derived classes (bad).

I thought I could make static virtual properties that could just be
overloaded in the derived classes to return the correct value, but as
I stated, static virtual is not allowed.

Any Ideas?
Mark