Structs Array

[Ollie]

I have a struct (below) and want to declare it as an Dynamic Array and add
values. but I am having trouble. I am new to C# and have looked high and low
but cannot find anywhere that tells me how to do it.

public struct Packs
{
public string PackName;
public long PackCount;
}

Cheers

Ollie

[Morten Wennevik]

Hi Ollie,

You can use an ArrayList and store the Packs in there. To retrieve a pack, simply cast it to Packs. It could be that I misunderstand what you need.

ArrayList packList = new ArrayList();

packList.Add(new Packs());

Packs p = (Packs)packList[0];

p.PackName will be null in this sample and p.PackCount will be 0;

--
Happy coding!
Morten Wennevik [C# MVP]

[Peter van der Goes]

"Ollie" <ol**********@hotmail.com> wrote in message
news:e8**************@TK2MSFTNGP09.phx.gbl...

I have a struct (below) and want to declare it as an Dynamic Array and add
values. but I am having trouble. I am new to C# and have looked high and low but cannot find anywhere that tells me how to do it.

public struct Packs
{
public string PackName;
public long PackCount;
}

Cheers

Ollie

Arrays are not dynamic in C#. I believe you want the ArrayList class. Check
the help for ArrayList. There's a good explanation with code samples in VB,
C# and C++ showing how to create, populate and use it.

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

[Ollie]

Ok, How about if I don't use a dynamic array.

"Peter van der Goes" <p_**********@toadstool.u> wrote in message
news:uN**************@TK2MSFTNGP10.phx.gbl...

"Ollie" <ol**********@hotmail.com> wrote in message
news:e8**************@TK2MSFTNGP09.phx.gbl...

I have a struct (below) and want to declare it as an Dynamic Array and add
values. but I am having trouble. I am new to C# and have looked high and low but cannot find anywhere that tells me how to do it.

public struct Packs
{
public string PackName;
public long PackCount;
}

Cheers

Ollie

Arrays are not dynamic in C#. I believe you want the ArrayList class. Check
the help for ArrayList. There's a good explanation with code samples in VB,
C# and C++ showing how to create, populate and use it.

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

[Morten Wennevik]

It's a little unclear what you want. If you want to store Packs, you can do that easily with an ArrayList. If you don't need it to be dynamic you can create a Packs array

Packs[] packList = new Packs[size];

--
Happy coding!
Morten Wennevik [C# MVP]

[Ollie]

OK, What I need to do is count Packs. I don't know the PackName nor do I
know how many there are. What I do know that there are multiple instances of
the same PackName.

So, What I want to do is create a dynamic array of Packs and add these to
the array. Where the PackName already exists I just want to increment the
PackCount for the corresponding PackName.

Hope that makes sense.

"Morten Wennevik" <Mo************@hotmail.com> wrote in message
news:opr91s26b0klbvpo@morten_x.edunord...
It's a little unclear what you want. If you want to store Packs, you can do
that easily with an ArrayList. If you don't need it to be dynamic you can
create a Packs array

Packs[] packList = new Packs[size];

--
Happy coding!
Morten Wennevik [C# MVP]

[Lasse Vågsæther Karlsen]

"Ollie" <ol**********@hotmail.com> wrote in
news:OD**************@TK2MSFTNGP10.phx.gbl:

OK, What I need to do is count Packs. I don't know the PackName nor do
I know how many there are. What I do know that there are multiple
instances of the same PackName.

So, What I want to do is create a dynamic array of Packs and add these
to the array. Where the PackName already exists I just want to
increment the PackCount for the corresponding PackName.

Hope that makes sense.

<snip>

Use a hashtable

Hashtable list = new Hashtable();

// add XYZ to the list
if (list.Contains("XYZ"))
list["XYZ"] = (Int32)list["XYZ"] + 1;
else
list["XYZ"] = 1;

this will add XYZ to the list with a value of 1, if it's not already
there. If it's there, read out the previous value, increment it by 1 and
store it back into the list.

Of course, if you need to store more than a Int32 value for each name,
you should create a class to hold the various values.

--
Lasse Vågsæther Karlsen
la***@vkarlsen.no
PGP KeyID: 0x0270466B

[Ollie]

Sounds like it would be easier to have two arrays...

String[] PackName;
Int[] PackCount;

Just not as tidy as using the Stuct.

"Lasse Vågsæther Karlsen" <la***@vkarlsen.no> wrote in message
news:Xn*****************************@207.46.248.16 ...
"Ollie" <ol**********@hotmail.com> wrote in
news:OD**************@TK2MSFTNGP10.phx.gbl:

OK, What I need to do is count Packs. I don't know the PackName nor do
I know how many there are. What I do know that there are multiple
instances of the same PackName.

So, What I want to do is create a dynamic array of Packs and add these
to the array. Where the PackName already exists I just want to
increment the PackCount for the corresponding PackName.

Hope that makes sense.

<snip>

Use a hashtable

Hashtable list = new Hashtable();

// add XYZ to the list
if (list.Contains("XYZ"))
list["XYZ"] = (Int32)list["XYZ"] + 1;
else
list["XYZ"] = 1;

this will add XYZ to the list with a value of 1, if it's not already
there. If it's there, read out the previous value, increment it by 1 and
store it back into the list.

Of course, if you need to store more than a Int32 value for each name,
you should create a class to hold the various values.

--
Lasse Vågsæther Karlsen
la***@vkarlsen.no
PGP KeyID: 0x0270466B