Drawing a Chess Board

Question

I'm trying to draw a 8x8 chess board using C#. Here's my first attempt to draw it. It won't draw the board and I haven't found what I'm missing.

public void Form1_Load(object sender, EventArgs e)
{
  Bitmap bm = new Bitmap(8 * 100, 8 * 100);
  Graphics g = Graphics.FromImage(bm);
  Color color1, color2;
  for (int i = 0; i < 8; i++)
  {
    if (i % 2 == 0)
    {
      color1 = Color.Black;
      color2 = Color.White;
    }
    else
    {
      color1 = Color.White;
      color2 = Color.Black;
    }
    SolidBrush blackBrush = new SolidBrush(color1);
    SolidBrush whiteBrush = new SolidBrush(color2);

    for (int j = 0; j < 8; j++)
    {
      if (j % 2 == 0)
        g.FillRectangle(blackBrush, i * 100, j * 100, 100, 100);
      else
        g.FillRectangle(whiteBrush, i * 100, j * 100, 100, 100);
    }
  }
  g.DrawImage(bm, 150, 200);
}

Answer 1

add BackgroundImage = bm; to the bottom of your code.

You are drawing the board fine, just not displaying the bitmap...

Edit: im not sure if you're interested, but i rewrote this code.

int sqaureWidth = 100;
int sqaureHeight = 100;
int rowCount = 8;
int columnCount = 8;

Bitmap bm = new Bitmap(sqaureWidth * columnCount, sqaureHeight * rowCount);
using (Graphics g = Graphics.FromImage(bm))
{
    for (int i = 0; i < columnCount; i++)
    {
        for (int j = 0; j < rowCount; j++)
        {
            if ((j % 2 == 0 && i % 2 == 0) || (j % 2 != 0 && i % 2 != 0))
                g.FillRectangle(Brushes.White, i * sqaureWidth, j * sqaureHeight, sqaureWidth, sqaureHeight);
            else if ((j % 2 == 0 && i % 2 != 0) || (j % 2 != 0 && i % 2 == 0))
                g.FillRectangle(Brushes.Black, i * sqaureWidth, j * sqaureHeight, sqaureWidth, sqaureHeight);
        }
    }
}
BackgroundImage = bm;

also this project could help if you want to make a chess game: http://www.codeproject.com/Articles/20736/C-C-CLI-Micro-Chess-Huo-Chess