[2.0] A little help with drawing images...

Ok, this is my code:

Code:

---

                                for (int i = 0; i < (currentMap.GetUpperBound(0) + 1); i++)
                                {
                                        for (int k = 0; k < (currentMap.GetUpperBound(1) + 1); k++)
                                        {
                                                Bitmap bmp = new Bitmap(tileImageList[currentMap[i, k]]);
                                                e.Graphics.DrawImage(bmp, new Point(k * tileHeight, (i * tileWidth) + ms.Height));
                                        }

                                }

---

currentMap is 2D array, that I specify the values for at runtime, my problem is, if I specify 20, 20 (which is 20 tiles * 20 tiles), it generates it, but my form can only view 11 tiles wide, and 8 tiles long, which is 88 tiles, but my form is showing 400, although I can not see them, my memory usage shows that they are there...

I want to draw only the tiles visible...

The code I am currently using is:

Code:

---

                                for (int i = 0; i < (currentMap.GetUpperBound(0) + 1) - mapY; i++)
                                {
                                        for (int k = 0; k < (currentMap.GetUpperBound(1) + 1) - mapX; k++)
                                        {
                                                Bitmap bmp = new Bitmap(tileImageList[currentMap[i, k]]);
                                                e.Graphics.DrawImage(bmp, new Point(k * tileHeight, (i * tileWidth) + ms.Height));
                                        }

                                }

---

mapY is increased if I click 'down' and decreased if I click 'up'
mapX is increased if I click 'right' and decreased if I click 'left'...

I am wondering how I can draw only the images I see;
I have tried starting the loop at mapY and ending it at mapY + formTilesY+1, but then if my grid isn't large enough it doesn't work...