Use NumberFormatInfo to format a number

Posted on February 11, 2011June 27, 2015 by coder

   



using System;
using System.Globalization;
public class MainClass {
    public static void Main() {

        NumberFormatInfo f = new NumberFormatInfo();
        f.CurrencySymbol = "$$";
        Console.WriteLine(3.ToString("C", f));          // $$ 3.00

    }
}

SMK MediaPlayer

Posted on February 11, 2011June 27, 2015 by coder


   

/*
Professional Windows GUI Programming Using C#
by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury, 
   Zach Greenvoss, Shripad Kulkarni, Neil Whitlow

Publisher: Peer Information
ISBN: 1861007663
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using MediaPlayer ;

namespace SMK_MediaPlayer
{
  /// <summary>
  /// Summary description for SMKMediaPlayer.
  /// </summary>
  public class SMKMediaPlayer : System.Windows.Forms.Form
  {
    /// <summary>
    /// Required designer variable.
    /// </summary>
    
    private AxMediaPlayer.AxMediaPlayer mPlayer = null ;
    private System.Windows.Forms.Panel panel2;
    private System.Windows.Forms.NotifyIcon notifyIcon1;
    private System.Windows.Forms.MainMenu mainMenu1;
    private System.Windows.Forms.MenuItem menuItem1;
    private System.Windows.Forms.MenuItem menuItem2;
    private System.Windows.Forms.MenuItem menuItem3;
    private System.Windows.Forms.ImageList imageList1;
    private System.Windows.Forms.MenuItem menuItem4;
    private System.Windows.Forms.ContextMenu contextMenu1;
    private System.Windows.Forms.MenuItem menuItem5;
    private System.Windows.Forms.MenuItem menuItem6;
    private System.ComponentModel.IContainer components;
    
    public SMKMediaPlayer()
    {
      //
      // Required for Windows Form Designer support
      //
      InitializeComponent();

      //
      // TODO: Add any constructor code after InitializeComponent call
      //
    }

    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    protected override void Dispose( bool disposing )
    {
      notifyIcon1.Dispose() ;
      mPlayer.Stop() ;
      mPlayer.Dispose();

      if( disposing )
      {
        if (components != null) 
        {
          components.Dispose();
        }
      }
      base.Dispose( disposing );
    }

    private void streamEnded(object sender , AxMediaPlayer._MediaPlayerEvents_EndOfStreamEvent e)
    {
      this.Show();
      notifyIcon1.Visible = false ;
      mPlayer.Stop();
      mPlayer.CurrentPosition= 0.0; 
    }

    #region Windows Form Designer generated code
    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
      this.components = new System.ComponentModel.Container();
      System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(SMKMediaPlayer));
      this.panel2 = new System.Windows.Forms.Panel();
      this.notifyIcon1 = new System.Windows.Forms.NotifyIcon(this.components);
      this.mainMenu1 = new System.Windows.Forms.MainMenu();
      this.menuItem1 = new System.Windows.Forms.MenuItem();
      this.menuItem2 = new System.Windows.Forms.MenuItem();
      this.menuItem3 = new System.Windows.Forms.MenuItem();
      this.menuItem4 = new System.Windows.Forms.MenuItem();
      this.imageList1 = new System.Windows.Forms.ImageList(this.components);
      this.contextMenu1 = new System.Windows.Forms.ContextMenu();
      this.menuItem5 = new System.Windows.Forms.MenuItem();
      this.menuItem6 = new System.Windows.Forms.MenuItem();
      this.SuspendLayout();
      // 
      // panel2
      // 
      this.panel2.Dock = System.Windows.Forms.DockStyle.Fill;
      this.panel2.Name = "panel2";
      this.panel2.Size = new System.Drawing.Size(344, 109);
      this.panel2.TabIndex = 1;
      // 
      // notifyIcon1
      // 
      this.notifyIcon1.Text = "notifyIcon1";
      this.notifyIcon1.Visible = true;
      // 
      // mainMenu1
      // 
      this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                            this.menuItem1,
                                            this.menuItem4});
      // 
      // menuItem1
      // 
      this.menuItem1.Index = 0;
      this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                            this.menuItem2,
                                            this.menuItem3});
      this.menuItem1.Text = "File";
      // 
      // menuItem2
      // 
      this.menuItem2.Index = 0;
      this.menuItem2.Text = "Open";
      this.menuItem2.Click += new System.EventHandler(this.menuItem2_Click);
      // 
      // menuItem3
      // 
      this.menuItem3.Index = 1;
      this.menuItem3.Text = "Exit";
      this.menuItem3.Click += new System.EventHandler(this.menuItem3_Click);
      // 
      // menuItem4
      // 
      this.menuItem4.Index = 1;
      this.menuItem4.Text = "Hide";
      this.menuItem4.Click += new System.EventHandler(this.menuItem4_Click);
      // 
      // imageList1
      // 
      this.imageList1.ColorDepth = System.Windows.Forms.ColorDepth.Depth8Bit;
      this.imageList1.ImageSize = new System.Drawing.Size(16, 16);
      this.imageList1.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("imageList1.ImageStream")));
      this.imageList1.TransparentColor = System.Drawing.Color.Transparent;
      // 
      // contextMenu1
      // 
      this.contextMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
                                             this.menuItem5,
                                             this.menuItem6});
      // 
      // menuItem5
      // 
      this.menuItem5.Index = 0;
      this.menuItem5.Text = "Show";
      this.menuItem5.Click += new System.EventHandler(this.menuItem5_Click);
      // 
      // menuItem6
      // 
      this.menuItem6.Index = 1;
      this.menuItem6.Text = "Exit";
      this.menuItem6.Click += new System.EventHandler(this.menuItem6_Click);
      // 
      // SMKMediaPlayer
      // 
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(344, 109);
      this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                      this.panel2});
      this.MaximizeBox = false;
      this.Menu = this.mainMenu1;
      this.Name = "SMKMediaPlayer";
      this.Text = "ActiveX Media Player";
      this.Load += new System.EventHandler(this.SMKMediaPlayer_Load);
      this.ResumeLayout(false);

    }
    #endregion

    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main() 
    {
      Application.Run(new SMKMediaPlayer());
    }

    private void SMKMediaPlayer_Load(object sender, System.EventArgs e)
    {
      notifyIcon1.Icon = new Icon("EYE.ico");
      notifyIcon1.Text = "SMK Media Player 1.0"; 
      notifyIcon1.Visible = false ; 
      notifyIcon1.DoubleClick += new EventHandler(NotifyIconDoubleClick);
      notifyIcon1.ContextMenu = contextMenu1 ; 

      mPlayer = new AxMediaPlayer.AxMediaPlayer();
      mPlayer.BeginInit();
      mPlayer.Size      = new System.Drawing.Size(292, 273);
      mPlayer.Location    = new System.Drawing.Point(0 , 16);
      mPlayer.TabIndex    = 0;
      mPlayer.Dock      = System.Windows.Forms.DockStyle.Fill;
      this.panel2.Controls.AddRange(new System.Windows.Forms.Control[] {this.mPlayer});

      mPlayer.EndOfStream
        += new AxMediaPlayer._MediaPlayerEvents_EndOfStreamEventHandler(this.streamEnded);

      mPlayer.EndInit();
    }

    private void menuItem2_Click(object sender, System.EventArgs e)
    {
      try
      {    
        Image im = imageList1.Images[0];
        OpenFileDialog fd = new OpenFileDialog();
        fd.ShowDialog();
        mPlayer.Open(fd.FileName);
        mPlayer.Play();      
      }
      catch(Exception eee)
      { 
        Console.WriteLine(eee.Message);
      }
    }

    private void menuItem4_Click(object sender, System.EventArgs e)
    {
      notifyIcon1.Visible = true ;
      this.Hide();    
    }

    private void menuItem3_Click(object sender, System.EventArgs e)
    {
      Application.Exit() ;
    }

    private void menuItem5_Click(object sender, System.EventArgs e)
    {
      notifyIcon1.Visible = false;
      this.Show();
    }

    private void menuItem6_Click(object sender, System.EventArgs e)
    {
      notifyIcon1.Visible = false ;
      Application.Exit() ;
    }

    private void NotifyIconDoubleClick(object sender, System.EventArgs e)
    {
      this.Visible = true ;
      this.Activate() ;
      this.Show() ;
      this.BringToFront() ;
    }

  
  }
}


           
          


SMK_MediaPlayer.zip( 181 k)

Same as System.Math.Acos but if angle is out of range, the result is clamped.

Posted on February 11, 2011June 27, 2015 by coder

   
 
public static class MathUtility
{
    //-------------------------------------------------------------------------------------
    /// <summary>
    /// Same as System.Math.Acos but if angle is out of range, the result is clamped.
    /// </summary>
    /// <param name="angle">Input angle.</param>
    /// <returns>Acos the angle.</returns>
    //-------------------------------------------------------------------------------------

    public static float SafeAcos(float angle)
        {
            if(angle <= -1.0f)
            {
                return (float) (System.Math.PI);
            }

            if(angle >= 1.0f)
            {
                return 0.0f;
            }

            return (float) System.Math.Acos(angle);
        }
}

Get Prime, Is prime

Posted on February 11, 2011June 27, 2015 by coder

//GNU Library General Public License (LGPL)
//http://dac.codeplex.com/license
using System;
using System.Runtime.ConstrainedExecution;

namespace RaisingStudio.Collections.Generic
{
internal static class HashHelpers
{
internal static readonly int[] primes = new int[] {
3, 7, 11, 0x11, 0x17, 0x1d, 0x25, 0x2f, 0x3b, 0x47, 0x59, 0x6b, 0x83, 0xa3, 0xc5, 0xef,
0x125, 0x161, 0x1af, 0x209, 0x277, 0x2f9, 0x397, 0x44f, 0x52f, 0x63d, 0x78b, 0x91d, 0xaf1, 0xd2b, 0xfd1, 0x12fd,
0x16cf, 0x1b65, 0x20e3, 0x2777, 0x2f6f, 0x38ff, 0x446f, 0x521f, 0x628d, 0x7655, 0x8e01, 0xaa6b, 0xcc89, 0xf583, 0x126a7, 0x1619b,
0x1a857, 0x1fd3b, 0x26315, 0x2dd67, 0x3701b, 0x42023, 0x4f361, 0x5f0ed, 0x72125, 0x88e31, 0xa443b, 0xc51eb, 0xec8c1, 0x11bdbf, 0x154a3f, 0x198c4f,
0x1ea867, 0x24ca19, 0x2c25c1, 0x34fa1b, 0x3f928f, 0x4c4987, 0x5b8b6f, 0x6dda89
};

internal static int GetMinPrime()
{
return primes[0];
}

[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
internal static int GetPrime(int min)
{
for (int i = 0; i < primes.Length; i++) { int num2 = primes[i]; if (num2 >= min)
{
return num2;
}
}
for (int j = min | 1; j < 0x7fffffff; j += 2) { if (IsPrime(j)) { return j; } } return min; } [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] internal static bool IsPrime(int candidate) { if ((candidate & 1) == 0) { return (candidate == 2); } int num = (int)Math.Sqrt((double)candidate); for (int i = 3; i <= num; i += 2) { if ((candidate % i) == 0) { return false; } } return true; } } } [/csharp]

Calculates the Least Common Multiple (LCM) of two strictly positive integer numbers.

Posted on February 11, 2011June 27, 2015 by coder

/*
* CVS identifier:
*
* $Id: MathUtil.java,v 1.15 2001/09/14 08:48:51 grosbois Exp $
*
* Class: MathUtil
*
* Description: Utility mathematical methods
*
*
*
* COPYRIGHT:
*
* This software module was originally developed by Raphaël Grosbois and
* Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
* Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David
* Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research
* Centre France S.A) in the course of development of the JPEG2000
* standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
* software module is an implementation of a part of the JPEG 2000
* Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
* Systems AB and Canon Research Centre France S.A (collectively JJ2000
* Partners) agree not to assert against ISO/IEC and users of the JPEG
* 2000 Standard (Users) any of their rights under the copyright, not
* including other intellectual property rights, for this software module
* with respect to the usage by ISO/IEC and Users of this software module
* or modifications thereof for use in hardware or software products
* claiming conformance to the JPEG 2000 Standard. Those intending to use
* this software module in hardware or software products are advised that
* their use may infringe existing patents. The original developers of
* this software module, JJ2000 Partners and ISO/IEC assume no liability
* for use of this software module or modifications thereof. No license
* or right to this software module is granted for non JPEG 2000 Standard
* conforming products. JJ2000 Partners have full right to use this
* software module for his/her own purpose, assign or donate this
* software module to any third party and to inhibit third parties from
* using this software module for non JPEG 2000 Standard conforming
* products. This copyright notice must be included in all copies or
* derivative works of this software module.
*
* Copyright (c) 1999/2000 JJ2000 Partners.
* */
using System;
namespace CSJ2K.j2k.util
{

///

This class contains a collection of utility methods fro mathematical
/// operations. All methods are static.
///
///

public class MathUtil
{

///

Method that calculates the Least Common Multiple (LCM) of two strictly
/// positive integer numbers.
///
///

/// First number
///
/// /// Second number
///
/// public static int lcm(int x1, int x2)
{
if (x1 <= 0 || x2 <= 0) { throw new System.ArgumentException("Cannot compute the least " + "common multiple of two " + "numbers if one, at least," + "is negative."); } int max, min; if (x1 > x2)
{
max = x1;
min = x2;
}
else
{
max = x2;
min = x1;
}
for (int i = 1; i <= min; i++) { if ((max * i) % min == 0) { return i * max; } } throw new System.ApplicationException("Cannot find the least common multiple of numbers " + x1 + " and " + x2); } ///

Method that calculates the Least Common Multiple (LCM) of several
/// positive integer numbers.
///
///

/// Array containing the numbers.
///
/// public static int lcm(int[] x)
{
if (x.Length < 2) { throw new System.ApplicationException("Do not use this method if there are less than" + " two numbers."); } int tmp = lcm(x[x.Length - 1], x[x.Length - 2]); for (int i = x.Length - 3; i >= 0; i–)
{
if (x[i] <= 0) { throw new System.ArgumentException("Cannot compute the least " + "common multiple of " + "several numbers where " + "one, at least," + "is negative."); } tmp = lcm(tmp, x[i]); } return tmp; } } } [/csharp]

Calculates the floor of the log, base 2, of 'x'.

Posted on February 11, 2011June 27, 2015 by coder

   
 
    
/*
* CVS identifier:
*
* $Id: MathUtil.java,v 1.15 2001/09/14 08:48:51 grosbois Exp $
*
* Class:                   MathUtil
*
* Description:             Utility mathematical methods
*
*
*
* COPYRIGHT:
* 
* This software module was originally developed by Rapha&euml;l Grosbois and
* Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
* Askel&ouml;f (Ericsson Radio Systems AB); and Bertrand Berthelot, David
* Bouchard, F&eacute;lix Henry, Gerard Mozelle and Patrice Onno (Canon Research
* Centre France S.A) in the course of development of the JPEG2000
* standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
* software module is an implementation of a part of the JPEG 2000
* Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
* Systems AB and Canon Research Centre France S.A (collectively JJ2000
* Partners) agree not to assert against ISO/IEC and users of the JPEG
* 2000 Standard (Users) any of their rights under the copyright, not
* including other intellectual property rights, for this software module
* with respect to the usage by ISO/IEC and Users of this software module
* or modifications thereof for use in hardware or software products
* claiming conformance to the JPEG 2000 Standard. Those intending to use
* this software module in hardware or software products are advised that
* their use may infringe existing patents. The original developers of
* this software module, JJ2000 Partners and ISO/IEC assume no liability
* for use of this software module or modifications thereof. No license
* or right to this software module is granted for non JPEG 2000 Standard
* conforming products. JJ2000 Partners have full right to use this
* software module for his/her own purpose, assign or donate this
* software module to any third party and to inhibit third parties from
* using this software module for non JPEG 2000 Standard conforming
* products. This copyright notice must be included in all copies or
* derivative works of this software module.
* 
* Copyright (c) 1999/2000 JJ2000 Partners.
* */
using System;
namespace CSJ2K.j2k.util
{
  
  /// <summary> This class contains a collection of utility methods fro mathematical
  /// operations. All methods are static.
  /// 
  /// </summary>
  public class MathUtil
  {

    /// <summary> Method that calculates the floor of the log, base 2, of &#039;x&#039;. The
    /// calculation is performed in integer arithmetic, therefore, it is exact.
    /// 
    /// </summary>
    /// <param name="x">The value to calculate log2 on.
    /// 
    /// </param>
    /// <returns> floor(log(x)/log(2)), calculated in an exact way.
    /// 
    /// </returns>
    public static int log2(int x)
    {
      int y, v;
      // No log of 0 or negative
      if (x <= 0)
      {
        throw new System.ArgumentException("" + x + " <= 0");
      }
      // Calculate log2 (it&#039;s actually floor log2)
      v = x;
      y = - 1;
      while (v > 0)
      {
        v >>= 1;
        y++;
      }
      return y;
    }
     }
}

Method that calculates the Greatest Common Divisor (GCD) of two positive integer numbers.

Posted on February 11, 2011June 27, 2015 by coder

///

This class contains a collection of utility methods fro mathematical
/// operations. All methods are static.
///
///

public class MathUtil
{

///

Method that calculates the Greatest Common Divisor (GCD) of two
/// positive integer numbers.
///
///

public static int gcd(int x1, int x2)
{
if (x1 < 0 || x2 < 0) { throw new System.ArgumentException("Cannot compute the GCD " + "if one integer is negative."); } int a, b, g, z; if (x1 > x2)
{
a = x1;
b = x2;
}
else
{
a = x2;
b = x1;
}

if (b == 0)
return 0;

g = b;

while (g != 0)
{
z = a % g;
a = g;
g = z;
}
return a;
}

///

Method that calculates the Greatest Common Divisor (GCD) of several
/// positive integer numbers.
///
///

/// Array containing the numbers.
///
/// public static int gcd(int[] x)
{
if (x.Length < 2) { throw new System.ApplicationException("Do not use this method if there are less than" + " two numbers."); } int tmp = gcd(x[x.Length - 1], x[x.Length - 2]); for (int i = x.Length - 3; i >= 0; i–)
{
if (x[i] < 0) { throw new System.ArgumentException("Cannot compute the least " + "common multiple of " + "several numbers where " + "one, at least," + "is negative."); } tmp = gcd(tmp, x[i]); } return tmp; } } } [/csharp]

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