keyword this

[PauloFor]

In this code :

public abstract class DCMenuAgrupado

{

Object x = this;

}

Why I can t use keyword 'this' ?

compile error : Keyword this is not available in the current context


Thanks.

[Peter van der Goes]

"PauloFor" <pa******@uol.com.br> wrote in message
news:eV**************@TK2MSFTNGP15.phx.gbl...

In this code :

public abstract class DCMenuAgrupado

{

Object x = this;

}

Why I can t use keyword 'this' ?

compile error : Keyword this is not available in the current context

The this keyword is a reference (pointer) to the current object. The lone
executable statement you cite in your class definition is not within a
method, which is probably causing the problem. Another potential sticking
point is that your class is abstract, and thus, cannot be instantiated. How
can there be a current object?
See what happens if you try something like this (no pun intended):

public class MyClass
{
public void myMethod()
{
// put you code here
}
}

--
Peter [MVP Visual Developer]
Jack of all trades, master of none.

[Jon Skeet [C# MVP]]

Peter van der Goes <p_**********@toadstool.u> wrote:

The this keyword is a reference (pointer) to the current object. The lone
executable statement you cite in your class definition is not within a
method, which is probably causing the problem.
Indeed. You can't use "this" for an instance variable initialiser.
Another potential sticking
point is that your class is abstract, and thus, cannot be instantiated. How
can there be a current object?

By there being an instance of a derived class.
However, you *can* use "this" in a constructor, achieving much the same
result as an instance variable initialiser. In other words, from:

public abstract class DCMenuAgrupado
{
Object x = this;
}

to

public abstract class DCMenuAgrupado
{
Object x;

public DCMenuAgrupado()
{
x = this;
}
}

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Bill Butler]

"Jon Skeet [C# MVP]" <sk***@pobox.com> wrote in message
<snip>

public abstract class DCMenuAgrupado
{
Object x;

public DCMenuAgrupado()
{
x = this;
}
}

I am a bit confused.
Other then providing an alias for "this", what is the point?

So....Why would you want to do this?

Bill

[Jon Skeet [C# MVP]]

Bill Butler <qw****@asdf.com> wrote:

<snip>

public abstract class DCMenuAgrupado
{
Object x;

public DCMenuAgrupado()
{
x = this;
}
}

I am a bit confused.
Other then providing an alias for "this", what is the point?

So....Why would you want to do this?

One example might be for a SyncRoot property, which defaulted to
"this" but which could be set to something else.

That's the only thing I can immediately think of, but we'd have to ask
the OP :)

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too