Compile error when used as Property

[Zany]

Hi,

Could someone please explain why the following doesn't compile. This turned
up as I was programming yesterday.

Thanks,
Zany

public class A {

public Rectangle r;

public Rectangle GetRect {

get {return r;}

}

public void Test() {

r.Width = 5; // works

Rectangle r1 = GetRect; // works

GetRect.Width = 5; // <-- won't compile

//

// Cannot modify the return value of 'A.GetRect' because it is not a
variable

//

}

}

[Clive Dixon]

System.Drawing.Rectangle is a struct (value type) rather than a class
(reference type).

"Zany" <za**@community.nospam> wrote in message
news:u0**************@TK2MSFTNGP10.phx.gbl...

Hi,

Could someone please explain why the following doesn't compile. This
turned up as I was programming yesterday.

Thanks,
Zany

public class A {

public Rectangle r;

public Rectangle GetRect {

get {return r;}

}

public void Test() {

r.Width = 5; // works

Rectangle r1 = GetRect; // works

GetRect.Width = 5; // <-- won't compile

//

// Cannot modify the return value of 'A.GetRect' because it is not
a variable

//

}

}

[Zany]

Thanks Clive

Lightbulb. Got it. Works now.

public class A {

public Rectangle r;

public Rectangle Rect {

get {return r;}

set {r = value;}

}

public void Test() {

r.Width = 5; // works (but exposed)

// or

Rectangle r1 = Rect; // works (through property)

r1.Width = 5;

Rect = r1;

}

}


"Clive Dixon" <cl*******************@digita.noluncheonmeat.com > wrote in
message news:%2****************@TK2MSFTNGP15.phx.gbl...

System.Drawing.Rectangle is a struct (value type) rather than a class
(reference type).

"Zany" <za**@community.nospam> wrote in message
news:u0**************@TK2MSFTNGP10.phx.gbl...

Hi,

Could someone please explain why the following doesn't compile. This
turned up as I was programming yesterday.

Thanks,
Zany

public class A {

public Rectangle r;

public Rectangle GetRect {

get {return r;}

}

public void Test() {

r.Width = 5; // works

Rectangle r1 = GetRect; // works

GetRect.Width = 5; // <-- won't compile

//

// Cannot modify the return value of 'A.GetRect' because it is not
a variable

//

}

}

[Peter Oliphant]

I think the problem is the following:

GetRect.Width = 5; // <-- won't compile

needs to be changed to this:

GetRect().Width = 5; //

The class A method 'GetRect' is a function, and you used syntactically like
a variable....

In fact:

Rectangle r1 = GetRect; // works

should have also generated an error, although you say it didn't, which is
weird...

[==P==]

"Zany" <za**@community.nospam> wrote in message
news:u0**************@TK2MSFTNGP10.phx.gbl...

Hi,

Could someone please explain why the following doesn't compile. This
turned up as I was programming yesterday.

Thanks,
Zany

public class A {

public Rectangle r;

public Rectangle GetRect {

get {return r;}

}

public void Test() {

r.Width = 5; // works

Rectangle r1 = GetRect; // works

GetRect.Width = 5; // <-- won't compile

//

// Cannot modify the return value of 'A.GetRect' because it is not
a variable

//

}

}

[Peter Oliphant]

Oh, wait. My bad. The problem is you haven't defined GetRect as a PROPERTY,
which I now see was your intent...

[==P==]

"Zany" <za**@community.nospam> wrote in message
news:u0**************@TK2MSFTNGP10.phx.gbl...

Hi,

Could someone please explain why the following doesn't compile. This
turned up as I was programming yesterday.

Thanks,
Zany

public class A {

public Rectangle r;

public Rectangle GetRect {

get {return r;}

}

public void Test() {

r.Width = 5; // works

Rectangle r1 = GetRect; // works

GetRect.Width = 5; // <-- won't compile

//

// Cannot modify the return value of 'A.GetRect' because it is not
a variable

//

}

}