Limit the size of a generic collection?

Question

Is there any way to limit the size of a generic collection?

I have a Stack of WriteableBitmap which I am using to store a clone of a WriteableBitmap on each change, meaning that I can undo easily by simply Popping the most recent WriteableBitmap off the stack.

The problem is the memory usage, I want to limit this stack to hold 10 objects, but I can't see a property allowing me to easily do this. Is there a way, or am I going to have to check the stack size on each change, and copy the last 10 objects into a new stack whenever I hit 10, and on each subsequent change? I know how to do this, but was hoping that there was an easier way, is there?

Answer 1

You have to implement your own wrapper to achieve that. There is no direct option available.

class FixedSizeStack : Stack
{
    private int MaxNumber;
    public FixedSizeStack(int Limit)
        : base()
    {
        MaxNumber = Limit;
    }

    public override void Push(object obj)
    {
        if (this.Count < MaxNumber)
            base.Push(obj);
    }

}