union in c#

[Ali]

Hi,

I'm a new programmer in C# but I know C/C++ programing,

I need somthing like 'union' in C#, what can I do?

thanks Ali

[Aravind C]

Hi Ali,

You can probably try to simulate the equivalent of an union
by setting the [FieldOffset] attribute for all members
in a struct to the 0th position for the offset.

[StructLayout(LayoutKind.Explicit)]
public struct MyUnionWithCategories
{
[FieldOffset(0)] public int Category;
[FieldOffset(0)] public char CategoryRep;
[FieldOffset(0)] public long CategoryIndicator;
}

Regards,
Aravind C
"Ali" <mo*********@yahoo.com> wrote in message
news:6D**********************************@microsof t.com...

Hi,

I'm a new programmer in C# but I know C/C++ programing,

I need somthing like 'union' in C#, what can I do?

thanks Ali

[Stoitcho Goutsev \(100\) [C# MVP]]

Hi,
With the only one exception: You cannot have fields of a refence type in the
union

--
B\rgds
100

"Aravind C" <ar***********@nospam.hotmail.com> wrote in message
news:uT**************@TK2MSFTNGP12.phx.gbl...

Hi Ali,

You can probably try to simulate the equivalent of an union
by setting the [FieldOffset] attribute for all members
in a struct to the 0th position for the offset.

[StructLayout(LayoutKind.Explicit)]
public struct MyUnionWithCategories
{
[FieldOffset(0)] public int Category;
[FieldOffset(0)] public char CategoryRep;
[FieldOffset(0)] public long CategoryIndicator;
}

Regards,
Aravind C
"Ali" <mo*********@yahoo.com> wrote in message
news:6D**********************************@microsof t.com...

Hi,

I'm a new programmer in C# but I know C/C++ programing,

I need somthing like 'union' in C#, what can I do?

thanks Ali