Intersects With Clip Rectangle of Graphics : Clip : Drawing 2D C# Examples

    
using  System;
using  System.Collections.Generic;
using  System.ComponentModel;
using  System.Data;
using  System.Drawing;
using  System.Text;
using  System.Windows.Forms;

public  class  Form1  :  Form  {
        protected  override  void  OnPaint(PaintEventArgs  e)  {
        Graphics  g  =  e.Graphics;
        g.FillRectangle(Brushes.White,  this.ClientRectangle);
        SizeF  sizeF  =  g.MeasureString("Test",  this.Font);
        StringFormat  sf  =  new  StringFormat();
        sf.LineAlignment  =  StringAlignment.Center;

        int  cellHeight  =  (int)sizeF.Height  +  4;
        int  cellWidth  =  80;
        int  nbrColumns  =  50;
        int  nbrRows  =  50;

        for  (int  row  =  0;  row  <  nbrRows;  ++row)
        {
            for  (int  col  =  0;  col  <  nbrColumns;  ++col)
            {
                Point  cellLocation  =  new  Point(col  *  cellWidth,    row  *  cellHeight);
                Rectangle  cellRect  =  new  Rectangle(cellLocation.X,  cellLocation.Y,  cellWidth,  cellHeight);
                if  (cellRect.IntersectsWith(e.ClipRectangle)){
                    Console.WriteLine("Row:{0}  Col:{1}",  row,  col);
                    g.FillRectangle(Brushes.LightGray,  cellRect);
                    g.DrawRectangle(Pens.Black,  cellRect);
                    String  s  =  String.Format("{0},{1}",  col,  row);
                    g.DrawString(s,  this.Font,  Brushes.Black,  cellRect,  sf);
                }
            }
        }
        }
        public  static  void  Main()  {
                Application.Run(new  Form1());
        }
}