Structs + Object

[Tamir Khason]

Little question:
I have a class A
{
public A()
{
//Whatever
}
public SomeStruct prop
{
get {return m_prop;}
set {m_prop = value;}
}
}
And structure SomeStruct
{
public string s1,s2;
public SomeStruct(string a1, a2)
{
s1 = a1;
s2 = a2;
}
}

I want to be able to assign A.prop.s1 = "Whatever"; and A.prop.s2 =
"Whatever 2"; //unable to modify rerurn value, but I want to !!!
rather then A.prop = new SomeStruct("Whatever","Whatever 2");

How to do this, ideas?

TNX

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "

[Jon Skeet [C# MVP]]

Tamir Khason <ta**********@tcon-NOSPAM.co.il> wrote:

Little question:
I have a class A
{
public A()
{
//Whatever
}
public SomeStruct prop
{
get {return m_prop;}
set {m_prop = value;}
}
}
And structure SomeStruct
{
public string s1,s2;
public SomeStruct(string a1, a2)
{
s1 = a1;
s2 = a2;
}
}

I want to be able to assign A.prop.s1 = "Whatever"; and A.prop.s2 =
"Whatever 2"; //unable to modify rerurn value, but I want to !!!
rather then A.prop = new SomeStruct("Whatever","Whatever 2");

How to do this, ideas?

Well, you just can't, with the above. You could:

1) Have methods in A to set each part part of the property
2) Make SomeStruct a class instead
3) (Not recommended) Make m_prop public, and get rid of the property

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

[Tamir Khason]

tnx
If I'll do it class so what'll happend with initialization? This way I'd
have to initialize it each time used or do it something like
public SomeClass
{
public string s1,s2;
}

....

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "
"Jon Skeet [C# MVP]" <sk***@pobox.com> wrote in message
news:MP************************@msnews.microsoft.c om...

Tamir Khason <ta**********@tcon-NOSPAM.co.il> wrote:

Little question:
I have a class A
{
public A()
{
//Whatever
}
public SomeStruct prop
{
get {return m_prop;}
set {m_prop = value;}
}
}
And structure SomeStruct
{
public string s1,s2;
public SomeStruct(string a1, a2)
{
s1 = a1;
s2 = a2;
}
}

I want to be able to assign A.prop.s1 = "Whatever"; and A.prop.s2 =
"Whatever 2"; //unable to modify rerurn value, but I want to !!!
rather then A.prop = new SomeStruct("Whatever","Whatever 2");

How to do this, ideas?

Well, you just can't, with the above. You could:

1) Have methods in A to set each part part of the property
2) Make SomeStruct a class instead
3) (Not recommended) Make m_prop public, and get rid of the property

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

[Jon Skeet [C# MVP]]

Tamir Khason <ta**********@tcon-NOSPAM.co.il> wrote:

If I'll do it class so what'll happend with initialization? This way I'd
have to initialize it each time used or do it something like
public SomeClass
{
public string s1,s2;
}

No, you specify a constructor with the class, just as you did with the
struct.

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

[Tamir Khason]

tnx

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "
"Jon Skeet [C# MVP]" <sk***@pobox.com> wrote in message
news:MP************************@msnews.microsoft.c om...

Tamir Khason <ta**********@tcon-NOSPAM.co.il> wrote:

If I'll do it class so what'll happend with initialization? This way I'd
have to initialize it each time used or do it something like
public SomeClass
{
public string s1,s2;
}

No, you specify a constructor with the class, just as you did with the
struct.

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

[Kevin Yu [MSFT]]

Hi Tamir,

First of all, I would like to confirm my understanding of your issue. From
your description, I understand that you are receiving a compiler error when
assigning to a property returned value. If there is any misunderstanding,
please feel free to let me know.

You get this error because SomeStruct is a value type. When the property
returns it, it is put on the stack as a temporary variable. It is a copy of
m_prop and is read-only. Assigning value to it doesn't make sense. If you
need to assign to it, besides make SomeStruct a class, you can also try the
following when accessing it.

SomeStruct ss = a.prop;
ss.s1 = "Whatever";

HTH.

Kevin Yu
=======
"This posting is provided "AS IS" with no warranties, and confers no
rights."