memory allocation

torNAdE

Hi, i wanna allocate memory for some data but i dont know how. With C it loks like struct MyStruct { int number; string Name; struct *Next; } But i dont know how do that in C# so could some one help me. ?? thx

Judah Gabriel Himango

In C# you don't allocate blocks of memory directly. The common language runtime that runs your code handles memory allocation and memory cleanup automatically for you. So instead of malloc, you allocate objects using the new keyword.

MyFoo obj = new MyFoo(); // allocates memory for MyFoo instance and returns that instance.

If you're absolutely certain that you need to allocate a block of memory (the only real scenario for this would be interoping with native code), then you can use System.Runtime.InteropServices.Marshal.AllocHGlobal or some of the other interop classes inside the InteropServices namespace. Does that answer your question?

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torNAdE

but how can i point to the next instance of myFoo. So if i have to creat 3 data. i explain, the pointer first points to the beginning of my struct so i wanna write some think like first->Next=Second; and so on Seond->Next=Third. So!! -- modified at 12:49 Monday 8th May, 2006

Judah Gabriel Himango

Oh, so you're trying to do a linked list. I see. You can do that like so:

class MyClass
{
public MyClass Next;
}

MyClass instance1 = new MyClass();
instance1.Next = new MyClass();
instance1.Next.Next = new MyClass(); // and so on

Tech, life, family, faith: Give me a visit. I'm currently blogging about: Is Jesus the Jewish Messiah? The apostle Paul, modernly speaking: Epistles of Paul Judah Himango

Judah Gabriel Himango

Also, keep in mind that if you're trying to do a linked list, there's one already built into the framework. See System.Collections.Generic.LinkedList[^].

Tech, life, family, faith: Give me a visit. I'm currently blogging about: Is Jesus the Jewish Messiah? The apostle Paul, modernly speaking: Epistles of Paul Judah Himango

torNAdE

ok i ll; try to do it but one other rquestion, how cans i store the other data which are int Numer and string name; does it look like class Myclass { int number; string name; public Myclass Next; }

Judah Gabriel Himango

torNAdE wrote:

does it look like class Myclass { int number; string name; public Myclass Next; }

Yes. As a general recommendation, class fields should be private. If you need to access them outside of the class, use a property:

class MyClass
{
private int number; // don't expose number to the outside world, make it private

public int TheNumber
{
    get
    {
        return number; // provide read-only acces to the outside world
    }
}

}

Tech, life, family, faith: Give me a visit. I'm currently blogging about: Is Jesus the Jewish Messiah? The apostle Paul, modernly speaking: Epistles of Paul Judah Himango

torNAdE

thank you verry much. it was helpfull:)