using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Text;
using System.Windows.Forms;

public class Form1 : Form {

    protected override void OnPaint(PaintEventArgs e) {
        Graphics g = e.Graphics;

        LinearGradientBrush lgb = new LinearGradientBrush(
                                             new Point(0, 0),
                                             new Point(50, 10),
                                             Color.White,
                                             Color.Black);
        g.FillRectangle(lgb, this.ClientRectangle);
        lgb.Dispose();
    }
    public static void Main() {
        Application.Run(new Form1());
    }
}

    

   
 
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;
    Bitmap bmp = new Bitmap("alphabet.gif");
    TextureBrush tb = new TextureBrush(bmp);

    g.FillRectangle(tb, 45, 45, 70, 150);
    bmp.Dispose();
    tb.Dispose();
    }
    public static void Main() {
        Application.Run(new Form1());
    }
}

    

   
 


using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

class WhatSizeTransform : Form {
    public static void Main() {
        Application.Run(new WhatSizeTransform());
    }
    public WhatSizeTransform() {
        Text = "With TransformPoints";
        ResizeRedraw = true;
    }
    protected void DoPage(Graphics grfx, Color clr, int cx, int cy) {
        Brush brush = new SolidBrush(clr);
        int y = 0;
        Point[] apt = { new Point(cx, cy) };

        grfx.TransformPoints(CoordinateSpace.Device, CoordinateSpace.Page, apt);

        DoIt(grfx, brush, ref y, apt[0], GraphicsUnit.Pixel);
        DoIt(grfx, brush, ref y, apt[0], GraphicsUnit.Display);
        DoIt(grfx, brush, ref y, apt[0], GraphicsUnit.Document);
        DoIt(grfx, brush, ref y, apt[0], GraphicsUnit.Inch);
        DoIt(grfx, brush, ref y, apt[0], GraphicsUnit.Millimeter);
        DoIt(grfx, brush, ref y, apt[0], GraphicsUnit.Point);
    }
    void DoIt(Graphics grfx, Brush brush, ref int y,Point pt, GraphicsUnit gu) {
        GraphicsState gs = grfx.Save();

        grfx.PageUnit = gu;
        grfx.PageScale = 1;

        PointF[] aptf = { pt };

        grfx.TransformPoints(CoordinateSpace.Page, CoordinateSpace.Device, aptf);

        SizeF sizef = new SizeF(aptf[0]);
        grfx.Restore(gs);

        grfx.DrawString(gu + ": " + sizef, Font, brush, 0, y);
        y += (int)Math.Ceiling(Font.GetHeight(grfx));
    }
}

    

   
 

using System;
using System.Drawing;
using System.Windows.Forms;
   
class PieChart: Form
{
     int[] aiValues = { 50, 100, 25, 150, 100, 75 };
   
     public static void Main()
     {
          Application.Run(new PieChart());
     }
     public PieChart()
     {
          ResizeRedraw = true;
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
     }
     protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
     {
          Rectangle rect   = new Rectangle(50, 50, 200, 200);
          Pen       pen    = new Pen(clr);
          int       iTotal = 0;
          float     fAngle = 0, fSweep;
   
          foreach(int iValue in aiValues)
               iTotal += iValue;
   
          foreach(int iValue in aiValues)
          {
               fSweep = 360f * iValue / iTotal;
               DrawPieSlice(grfx, pen, rect, fAngle, fSweep);
               fAngle += fSweep;
          }
     }
     protected virtual void DrawPieSlice(Graphics grfx, Pen pen, 
                                         Rectangle rect,
                                         float fAngle, float fSweep)
     {
          float fSlice = (float)(2 * Math.PI * (fAngle + fSweep / 2) / 360);
   
          rect.Offset((int)(rect.Width  / 10 * Math.Cos(fSlice)),
                      (int)(rect.Height / 10 * Math.Sin(fSlice)));
                      
          grfx.DrawPie(pen, rect, fAngle, fSweep); 
     }
}

    

   
 


using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
   
class AntiAlias: Form
{
     public static void Main()
     {
          Application.Run(new AntiAlias());
     }
     public AntiAlias()
     {
          Text = "Anti-Alias Demo";
          BackColor = SystemColors.Window;
          ForeColor = SystemColors.WindowText;
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          Graphics grfx = pea.Graphics;
          Pen      pen  = new Pen(ForeColor);
   
          grfx.SmoothingMode   = SmoothingMode.None;
   
          grfx.DrawLine(pen, 2, 2, 18, 10);
     }
}

    

   
 
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;
    Bitmap bmp = new Bitmap("rama.jpg");

    Rectangle r = new Rectangle(0, 0, bmp.Width, bmp.Height);
    g.DrawImage(bmp, this.ClientRectangle);
    }
    public static void Main() {
        Application.Run(new Form1());
    }
}

    

   
 


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;
    Bitmap bmp = new Bitmap("rama.jpg");
    g.FillRectangle(Brushes.White, this.ClientRectangle);

    Point[] destinationPoints = {
      new Point(0, 0),    // destination for upper-left point of original
      new Point(100, 0),  // destination for upper-right point of original
      new Point(50, 100)};// destination for lower-left point of original
    g.DrawImage(bmp, destinationPoints);
    }
    public static void Main() {
        Application.Run(new Form1());
    }
}