Thread: Displaying 2D array faster

I've been displaying my game map (which draws only what is contained in the bounding box) like so (C#):

Code:

// X, Y, Width, Height
Rectangle rect = new Rectangle(1, 1, 3, 3);

char[,] map = new char[10, 10];

// Initialisation.
for (int x = 0; x < map.GetLength(0); x++)
{
    for (int y = 0; y < map.GetLength(1); y++)
    {
        map[x, y] = '#';
    }
}

// Only draw the part of the map that is contained in the bounding box.
for (int x = rect.Left; x < rect.Right; x++)
{
    for (int y = rect.Top; y < rect.Bottom; y++)
    {
        Console.SetCursorPosition(x, y);
        Console.Write(map[x, y]);
    }
}

In the "little math problem" thread (which was deleted) Bubba mentioned that there is a better way to display the map, using only one loop.

So does anyone know how that method (or others) works to draw a map faster than the current method I use?

Any help is appreciated.