equivalent of C struct in C#

Could someone help me with what the equivalent of this C code is in C#?

struct { int l开发者_如何学JAVAeft, right; } stack[MAX];

Thanks!

public struct PickAName
{
     public int left;
     public int right;
}

private const int MAX = 666;
PickAName[] stack = new PickAName[MAX];

or:

Stack<PickAName> stack = new Stack<PickAName>();

public struct PickAName
{
     public int left;
     public int right;
}

Not sure what stack[MAX] does.

If you want to use a "stack" in pseudocode terms, do:

Stack<PickAName> stack = new Stack<PickAName>();
stack.Push(new PickAName());
stack.Pop();