gistfile1.cs

        public void GenerateGrid(int quantityX, int quantityY)
        {
            this.divX = quantityX + 1;
            this.divY = quantityY + 1;

            int nodesQuantity = this.divX * this.divY;

            float maxWidth = GetStringWidth(nodesQuantity.ToString()) * 1.7f;

            this.offsetY = maxWidth;

            float width = (this.divX * maxWidth) + 20.0f;
            float height = (this.divY * maxWidth);

            Bitmap bmp = new Bitmap((int)(width + 1.0f), (int)(height + 1.0f));
            Graphics gr = Graphics.FromImage(bmp);

            Pen pen = new Pen(Color.Coral);
            for (int i = 0; i < this.divY; i++)
            {
                for (int j = 0; j < this.divX; j++)
                {
                    gr.DrawLine(pen, j * maxWidth + r / 2, height - (i * maxWidth) - maxWidth + r / 2, j * maxWidth + r / 2, height - ((i + 1) * maxWidth) - maxWidth + r / 2);
                    if (j < this.divX - 1)
                    {
                        gr.DrawLine(pen, j * maxWidth + r / 2, height - (i * maxWidth) - maxWidth + r / 2, (j + 1) * maxWidth + r / 2, height - (i * maxWidth) - maxWidth + r / 2);
                    }
                    if (j < (this.divX - 1) && i < (this.divY - 1))
                    {
                        gr.DrawLine(pen, j * maxWidth + r / 2, height - ((i + 1) * maxWidth) - maxWidth + r / 2, (j + 1) * maxWidth + r / 2, height - (i * maxWidth) - maxWidth + r / 2);
                    }
                }
            }
            
            for (int i = 0; i < this.divY; i++)
            {
                for (int j = 0; j < this.divX; j++)
                {
                    gr.FillEllipse(Brushes.DarkOrange, j * maxWidth, height - (i * maxWidth) - maxWidth, r, r);
                    gr.DrawString((j * (this.divY ) + i).ToString(), font, Brushes.Black, r + j * maxWidth, height - (i * maxWidth) - maxWidth);
                }
            }

            this.picture.Height = bmp.Height;
            this.picture.Width = bmp.Width;
            this.picture.Image = bmp;
        }