// draws into a bitmap which exists during runtime of the program// this is called once, when the form loads, and each time the form gets resized   // m_Graphics points to the Bitmap m_BackBuffer           		private void repaint_buffer()		{						foreach(Cell c in m_Cells)			{												c.Draw(m_Graphics);			}									m_Grid.Draw(m_Graphics, 0,0 , m_NumCols-1,m_NumRows-1);									m_Graphics.Flush();		}		internal void	UpdateSurface()		{			m_Surface.DrawImage(m_BackBuffer, 0,0);			m_Surface.Flush();		}                // the OnPaint method of the control		private void FTable_Paint(object sender, System.Windows.Forms.PaintEventArgs e)		{			UpdateSurface();						}                // Draw Method of a Cell interior		internal void Draw(Graphics g)		{												Pen backgrpen, forepen;								if (bool_isSelected)				{											backgrpen = m_Pens[0];					forepen =  m_Pens[1];				}				else				{					backgrpen =  m_Pens[2];					forepen =  m_Pens[3];				}														g.FillRectangle(backgrpen.Brush,m_Fillcoords); 				g.DrawString(_Text,m_Font,forepen.Brush,m_Rect,m_StringFormat);				}//end Draw()        // draws the grid lines. since every line segment can have an own color,        // I have to draw the segments separately.	internal void	Draw(Graphics g, int column_start, int row_start, int column_end, int row_end)	{		for (int y=row_start;		y <= 1 + row_end;	++y)		for (int x=column_start;	x < column_end;		++x)		{			LineSeg s = m_HorizSegs[x,y];			g.DrawLine(s.pen, s.x1,s.y1 , s.x2,s.y2);			}		for (int y=row_start;		y <= row_end;			++y)		for (int x=column_start;	x < 1 + column_end;		++x)		{			LineSeg s = m_VertSegs[x,y];			g.DrawLine(s.pen, s.x1,s.y1 , s.x2,s.y2);			}	}

using System;namespace ConsoleApplication1{	class Class1	{		[STAThread]		static void Main(string[] args)		{			if (args.Length < 1)			{				display_options();			 return;			}					int[] arr = new int[25 * 1024*1024];	// 4*25 MB = 100MB			int tickct_start, tickct_end, ticks_diff;							switch (args[0])			{				case "-fe":	{tickct_start=System.Environment.TickCount; test__foreach(arr);}		break;				case "-fl":	{tickct_start=System.Environment.TickCount; test__for_length(arr);}	break;				case "-ft":	{tickct_start=System.Environment.TickCount; test__for_temp(arr);}	break;								default:	display_options();				return;			}						tickct_end = System.Environment.TickCount;			ticks_diff = tickct_end - tickct_start;						Console.WriteLine();			Console.WriteLine("time elapsed: " + ticks_diff);			Console.WriteLine();		}				static void	display_options()		{					Console.WriteLine();			Console.WriteLine("Options:");			Console.WriteLine("-fe : foreach");			Console.WriteLine("-fl : for with .length");			Console.WriteLine("-ft : for with temporary len");			Console.WriteLine();		}						static void	test__foreach(int[] arr)		{						foreach (int i in arr);				}				static void	test__for_length(int[] arr)		{			int dummy;						for (int i=0;	i<arr.Length;	++i)				dummy = arr;		}		static void	test__for_temp(int[] arr)		{			int dummy;						for (int i=0,len=arr.Length;	i<len;	++i)				dummy = arr;		}			}}