2006-05-10 (Wed)

* ¸½ºß¼Â¹ÔÃæ¤Î¥á¥½¥Ã¥É̾¤ò¼èÆÀ¤¹¤ë MethodBase.GetCurrentMethod()

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.NET ¤Ç¸½ºß¼Â¹ÔÃæ¤Î¥á¥½¥Ã¥É̾¤ò¼èÆÀ¤¹¤ë¤Ë¤Ï¡¢System.Reflection.MethodBase.GetCurrentMethod().Name ¤ò»È¤¦¡£

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Trace.WriteLine(DateTime.Now.ToString() + " PlayVideoClip");

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Trace.WriteLine(DateTime.Now.ToString() + " " + System.Reflection.MethodBase.GetCurrentMethod().Name);

using System.Reflection; ¤·¤Æ¤ª¤±¤Ð MethodBase.GetCurrentMethod().Name ¤ÇºÑ¤à¤±¤É¡¢¥È¥ì¡¼¥¹¤·¤¿¤¤¤È¤³¤í¤Ë¥Ú¥¿¥Ú¥¿¤È¥³¥Ô¡¼ & ¥Ú¡¼¥¹¥È¤¹¤ë¤³¤È¤ò¹Í¤¨¤Æ¡¢´°Á´¤Ê̾Á°¤Ç½ñ¤¤¤¿¡£

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2006-05-07 (Sun)

* ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤ò½ªÎ»¤µ¤»¤ë¤Ë¤Ï Environment.Exit()

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C# ¤Ç¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤ò½ªÎ»¤µ¤»¤ë¤Ë¤Ï System.Environment.Exit() ¤ò»È¤¦¡£

Environment.Exit(0);

Exit ¥á¥½¥Ã¥É¤Î°ú¿ô¤Ë¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Î½ªÎ»¥³¡¼¥É¤ò»ØÄê¤Ç¤­¤ë¡£¤³¤ì¤Ï 2005-01-20 ¡ÖC# ¤Ç¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Î½ªÎ»¥³¡¼¥É¤òÊÖ¤¹¡×¤Ç¤â½ñ¤¤¤¿¡£Àµ¾ï½ªÎ»¤Ê¤é 0 ¤ò»ØÄꤹ¤ë¤Î¤¬´·Îã¡£¤½¤ì°Ê³°¤Î¾ì¹ç¤Ï¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Îºî¤ê¤Ë¤è¤Ã¤ÆÃͤλȤ¤Êý¤ÏÀ麹ËüÊÌ¡£¸Æ¤Ó½Ð¤·Â¦¤Ë¥¨¥é¡¼¤òÅÁ¤¨¤ë¤¿¤á¤Ë¡¢¥¨¥é¡¼¤Ë±þ¤¸¤ÆºÙ¤«¤¯ÈÖ¹æ¤ò·è¤á¤Æ¤ª¤¯¤³¤È¤â¤¢¤ë¡£°ìÊý¡¢¥¨¥é¡¼¤Ï¤ß¤ó¤Ê½ªÎ»¥³¡¼¥É1¤È³ä¤êÀڤäÆÄêµÁ¤¹¤ë¤³¤È¤â¤¢¤ë¡£

System.Windows.Forms.Application.Exit() ¤È¤¤¤¦¤Î¤â¤¢¤ë¤¬¡¢¤³¤ì¤Ï¥á¥Ã¥»¡¼¥¸¥ë¡¼¥×¤ò»ß¤á¤ë¤À¤±¤Ç¤½¤ì°Ê³°¤Î½èÍý¤Ï³¹Ô¤·¤Æ¤·¤Þ¤¦¡£

º£²ó¤Ï¤³¤ì¤Ë´Ø¤¹¤ë¼ºÇÔ¤ò¤·¤¿¡£¶È̳¥¨¥é¡¼È¯À¸»þ¤Ë¥À¥¤¥¢¥í¥°¤ò½Ð¤·¤Æ WinForm ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤ò½ª¤ï¤é¤»¤è¤¦¤È¤·¤¿¤±¤É¡¢Application.Exit() ¤ò»È¤Ã¤Æ¤·¤Þ¤Ã¤¿¤¿¤á¤Ë½èÍý¤¬Â³¹Ô¤µ¤ì¤Æ¤·¤Þ¤Ã¤¿¡£¥Æ¥¹¥È¤·¤Æ¤¹¤°¤Ëµ¤¤Å¤¤¤¿¤±¤É¤Í¡£

2006-05-03 (Wed)

* C# ¤È DirectX ¤Çư²è¤òºÆÀ¸¤¹¤ë

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2006-04-27 ¡ÖC# ¤Ç¥¹¥¯¥ê¡¼¥ó¥»¡¼¥Ð¡¼¤òºî¤ë¡×¤Î³¤­¡£C# ¤«¤é DirectX ¤ò»È¤Ã¤Æ MPEG2 ¤Îư²è¤òºÆÀ¸¤¹¤ë¡£

- DirectX SDK ¤Î¥À¥¦¥ó¥í¡¼¥É

ư²èºÆÀ¸Éôʬ¤Ï DirectX ¤ò»È¤Ã¤Æºî¤ë¤³¤È¤Ë¤·¤¿¤Î¤Ç¡¢DirectX SDK ¤ò¥À¥¦¥ó¥í¡¼¥É¤·¤¿¡£¥µ¥¤¥º¤¬390.2MB ¤â¤¢¤ë¤Î¤Ç¡¢µ¤Ä¹¤Ë¡£

DirectX SDK - (April 2006)
http://www.microsoft.com/downloads/details.aspx?FamilyId=7AB ...

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- Microsoft.DirectX.AudioVideoPlayback ¤Çư²è¤òºÆÀ¸

ư²èºÆÀ¸Éôʬ¤Ï Microsoft.DirectX.AudioVideoPlayback ¤ò»È¤Ã¤Æ´Êñ¤Ëºî¤ì¤¿¡£

string path = GetNextClipPath();
fileIndex++;
if (videoClip == null) {
    videoClip = new Video(path);
} else {
    videoClip.Ending -= this.ClipEnded;
    videoClip.Open(path);
}
videoClip.Ending += new System.EventHandler(this.ClipEnded);
videoClip.Owner = this;
videoClip.Fullscreen = false;
Bounds = new Rectangle(0, 20, 1280, 960);
videoClip.Play();

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¥×¥í¥°¥é¥à¤Ë̾Á°¤òÉÕ¤±¤è¤¦¡£¥¹¥¿¡¼¥È¥­¥Ã¥È¤¬¥Ç¥Õ¥©¥ë¥È¤ÇÉÕ¤±¤ë ScreenSaver1.exe ¤À¤ÈÌ£µ¤¤Ê¤¤¤·¡¢¡Ö²èÌ̤Υץí¥Ñ¥Æ¥£¡×¤ÇÁªÂò¤¹¤ë¤È¤­¤â²¿¤«Ì¾Á°¤¬É½¼¨¤µ¤ì¤Æ¤Û¤·¤¤¤·¡£¤È¤¯¤Ë»×¤¤¤Ä¤«¤Ê¤«¤Ã¤¿¤Î¤Ç¡¢¤È¤ê¤¢¤¨¤º SaveTheQueen (¥»¡¼¥Ö¥¶¥¯¥¤¡¼¥ó) ¤Ë¤·¤¿¡£FF12 ¤Ë½Ð¤Æ¤­¤¿·õ¤Î̾Á°¤¬¸µ¤Í¤¿¤À¡£FF9 ¤Ë¤â½Ð¤Æ¤­¤¿¤«¤Ê? ¤â¤È¤â¤È 2006-04-20 ¤Î¡ÖFF12 ¤Î¥à¡¼¥Ó¡¼¤ò¥ê¥Ã¥Ô¥ó¥° (ripping) ¤·¤ÆºÆÀ¸¡×¤Ç¥ê¥Ã¥×¤·¤¿¥Õ¥¡¥¤¥ë¤òºÆÀ¸¤¹¤ë¥¹¥¯¥ê¡¼¥ó¥»¡¼¥Ð¡¼¤òºî¤ë¤Î¤¬ÌÜŪ¤À¤«¤é¡¢save ¤È¤¤¤¦Ã±¸ì¤¬Æþ¤Ã¤Æ¤¤¤Æ¡¢FF ¤Ã¤Ý¤¤Ì¾Á°¤Ç¤¢¤ì¤Ð¤Ê¤ó¤Ç¤âÎɤ«¤Ã¤¿¡£

- SaveTheQueen ¤Î¥½¡¼¥¹

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ScreenSaverForm.cs
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
using Microsoft.DirectX.AudioVideoPlayback;

namespace SaveTheQueen {
    partial class ScreenSaverForm : Form {

        private bool isActive = false;
        private Point mouseLocation;
        private Video videoClip;
        private DefaultTraceListener dtl;

        /// <summary>
        /// ºÆÀ¸¤¹¤ë¥ê¥¹¥È¾å¤Î¸½ºß°ÌÃÖ¡£»ÏÅÀ¤Ï0¡£
        /// </summary>
        private int fileIndex = 0;

        public ScreenSaverForm() {
            Trace.WriteLine(DateTime.Now.ToString() + " " + System.Reflection.MethodBase.GetCurrentMethod().Name);

            dtl = (DefaultTraceListener)Trace.Listeners["Default"];
            dtl.LogFileName = @"c:\trace.txt";

            InitializeComponent();
            SetupScreenSaver();
            PlayVideoClip();
        }

        private void SetupScreenSaver() {
            Trace.WriteLine(DateTime.Now.ToString() + " " + System.Reflection.MethodBase.GetCurrentMethod().Name);

            // ¥À¥Ö¥ë ¥Ð¥Ã¥Õ¥¡¤ò»ÈÍѤ·¤Æ¡¢É½¼¨¥Ñ¥Õ¥©¡¼¥Þ¥ó¥¹¤ò²þÁ±¤·¤Þ¤¹¡£
            this.SetStyle(ControlStyles.OptimizedDoubleBuffer | ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint, true);

            // ¥Þ¥¦¥¹¤ò¥­¥ã¥×¥Á¥ã¤·¤Þ¤¹¡£
            this.Capture = true;

            // ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤òÁ´²èÌÌɽ¼¨¥â¡¼¥É¤ËÀßÄꤷ¤Æ¡¢¥Þ¥¦¥¹¤òɽ¼¨¤·¤Þ¤»¤ó¡£
            Cursor.Hide();
            // Bounds = Screen.PrimaryScreen.Bounds;
            ShowInTaskbar = false;
            DoubleBuffered = true;

            ResumeVideoClip();
        }

        /// <summary>
        /// ¸½ºßºÆÀ¸¤·¤Æ¤¤¤ë¥Ó¥Ç¥ª¥¯¥ê¥Ã¥×¤Î¾ðÊó¤òÊݸ¤·¤Þ¤¹¡£
        /// </summary>
        private void SaveVideoClip() {
            Properties.Settings.Default.LastClipIndex = fileIndex - 1;
            Properties.Settings.Default.LastClipPosision = videoClip.CurrentPosition;
            Properties.Settings.Default.Save();
        }

        /// <summary>
        /// Á°²ó½ªÎ»»þ¤ËºÆÀ¸¤·¤Æ¤¤¤¿¥Ó¥Ç¥ª¥¯¥ê¥Ã¥×¤Î¾ðÊó¤òÉü¸µ¤·¤Þ¤¹¡£
        /// </summary>
        private void ResumeVideoClip() {
            int lastClipIndex = Properties.Settings.Default.LastClipIndex;
            if (0 <= lastClipIndex && lastClipIndex < Properties.Settings.Default.videoClipPath.Length) {
                fileIndex = lastClipIndex;
            }
      }

        private void PlayVideoClip() {
            Trace.WriteLine(DateTime.Now.ToString() + " " + System.Reflection.MethodBase.GetCurrentMethod().Name );

            string path = GetNextClipPath();
            fileIndex++;
            if (videoClip == null) {
                videoClip = new Video(path);
            } else {
                videoClip.Ending -= this.ClipEnded;
                videoClip.Open(path);
            }
            videoClip.Ending += new System.EventHandler(this.ClipEnded);
            videoClip.Owner = this;
            videoClip.Fullscreen = false;
            // WindowState = FormWindowState.Normal;
            Bounds = new Rectangle(0, 20, 1280, 960);
            videoClip.Play();
        }

        private void ClipEnded(object sender, System.EventArgs e) {
            Trace.WriteLine(DateTime.Now.ToString() + " " + System.Reflection.MethodBase.GetCurrentMethod().Name);

            PlayVideoClip();
        }

        private string GetNextClipPath() {
            Trace.WriteLine(DateTime.Now.ToString() + " " + System.Reflection.MethodBase.GetCurrentMethod().Name);

            if (Properties.Settings.Default.videoClipPath.Length == 0) {
                return "";
            }
            if (Properties.Settings.Default.videoClipPath.Length - 1 < fileIndex) {
                fileIndex = 0;
            }
            if (fileIndex < 0) {
                fileIndex = Properties.Settings.Default.videoClipPath.Length - 1;
            }

            string path = Properties.Settings.Default.videoClipPath[fileIndex];
            Trace.WriteLine(DateTime.Now.ToString() + " " + System.Reflection.MethodBase.GetCurrentMethod().Name + " " + path);

            return path;
        }

        private void ScreenSaverForm_MouseMove(object sender, MouseEventArgs e) {
            Trace.WriteLine(DateTime.Now.ToString() + " " + System.Reflection.MethodBase.GetCurrentMethod().Name);

            // IsActive ¤ª¤è¤Ó MouseLocation ¤ò¡¢¤³¤Î¥¤¥Ù¥ó¥È¤¬ºÇ½é¤Ë¸Æ¤Ó½Ð¤µ¤ì¤ë¤È¤­¤Ë¤Î¤ßÀßÄꤷ¤Þ¤¹¡£
            if (!isActive) {
                mouseLocation = MousePosition;
                isActive = true;
            } else {
                // ºÇ½é¤Î¸Æ¤Ó½Ð¤·°ÊÍè¥Þ¥¦¥¹¤¬Ãø¤·¤¯°Üư¤·¤¿¾ì¹ç¡¢ÊĤ¸¤Þ¤¹¡£
                if ((Math.Abs(MousePosition.X - mouseLocation.X) > 10) ||
                    (Math.Abs(MousePosition.Y - mouseLocation.Y) > 10)) {
                    Close();
                }
            }
        }

        private void ScreenSaverForm_KeyDown(object sender, KeyEventArgs e) {
            Trace.WriteLine(DateTime.Now.ToString() + System.Reflection.MethodBase.GetCurrentMethod().Name);

            if (e.KeyData == Keys.F) {
                // ¼¡¤Î¥¯¥ê¥Ã¥×
                PlayVideoClip();
            } else if (e.KeyData == Keys.B) {
                // Á°¤Î¥¯¥ê¥Ã¥×
                fileIndex -= 2;
                PlayVideoClip();
            } else if (e.KeyData == Keys.R) {
                // ¸½ºßºÆÀ¸Ãæ¤Î¥¯¥ê¥Ã¥×¤òƬ¤«¤é¤â¤¦°ìÅÙºÆÀ¸
                fileIndex--;
                PlayVideoClip();
            } else {
                Close();
            }
        }

        private void ScreenSaverForm_MouseDown(object sender, MouseEventArgs e) {
            Trace.WriteLine(DateTime.Now.ToString() + System.Reflection.MethodBase.GetCurrentMethod().Name);

            Close();
        }

        private void ScreenSaverForm_FormClosing(object sender, FormClosingEventArgs e) {
            Trace.WriteLine(DateTime.Now.ToString() + " " + System.Reflection.MethodBase.GetCurrentMethod().Name);

            if (videoClip != null) {
                SaveVideoClip();
                videoClip.Dispose();
                videoClip = null;
            }
        }
    }
}

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OptionsForm.cs
using System;
using System.Configuration;
using System.Drawing;
using System.Windows.Forms;


namespace SaveTheQueen {
    partial class OptionsForm : Form {
        public OptionsForm() {
            InitializeComponent();

            // ¸½ºß¤ÎÀßÄ꤫¤é¥Æ¥­¥¹¥È ¥Ü¥Ã¥¯¥¹¤òÆÉ¤ß¹þ¤ß¤Þ¤¹¡£
            try {
                backgroundImageFolderTextBox.Lines = Properties.Settings.Default.videoClipPath;
            //  rssFeedTextBox.Text = Properties.Settings.Default.RssFeedUri;
            } catch {
                MessageBox.Show("¥¹¥¯¥ê¡¼¥ó ¥»¡¼¥Ð¡¼¤ÎÀßÄê¤Ç¤ÎÆÉ¤ß¼è¤êÃæ¤ËÌäÂ꤬ȯÀ¸¤·¤Þ¤·¤¿¡£");
            }
        }

        // [ŬÍÑ] ¥Ü¥¿¥ó¤¬ºÇ¸å¤Ë²¡¤µ¤ì¤Æ¤«¤éÊѹ¹¤¬¹Ô¤ï¤ì¤¿¾ì¹ç¤Ë¤Î¤ß¡¢
        // [ŬÍÑ] ¥Ü¥¿¥ó¤ò¥¢¥¯¥Æ¥£¥Ö¤Ê¾õÂ֤˹¹¿·¤·¤Þ¤¹¡£
        private void UpdateApply() {
            /*
            if (Properties.Settings.Default.BackgroundImagePath != backgroundImageFolderTextBox.Text
                  || Properties.Settings.Default.RssFeedUri != rssFeedTextBox.Text)
                applyButton.Enabled = true;
            else
                applyButton.Enabled = false;
            */
        }

        // [ŬÍÑ] ¥Ü¥¿¥ó¤¬ºÇ¸å¤Ë²¡¤µ¤ì¤Æ¤«¤é¤Î¡¢¤¹¤Ù¤Æ¤ÎÊѹ¹¤òŬÍѤ·¤Þ¤¹¡£
        private void ApplyChanges() {
            Properties.Settings.Default.videoClipPath = backgroundImageFolderTextBox.Lines;
            Properties.Settings.Default.Save();
        }

        private void btnOK_Click(object sender, EventArgs e) {
            try {
                ApplyChanges();
            } catch (ConfigurationException) {
                MessageBox.Show("ÀßÄê¤òÊݸ¤Ç¤­¤Þ¤»¤ó¤Ç¤·¤¿¡£¥¹¥¯¥ê¡¼¥ó ¥»¡¼¥Ð¡¼¤ÈƱ¤¸¥Ç¥£¥ì¥¯¥È¥êÆâ¤Ë .config ¥Õ¥¡¥¤¥ë¤¬¤¢¤ë¤³¤È¤ò³Îǧ¤·¤Æ¤¯¤À¤µ¤¤¡£", "ÀßÄê¤òÊݸ¤Ç¤­¤Þ¤»¤ó¤Ç¤·¤¿¡£", MessageBoxButtons.OK, MessageBoxIcon.Error);
            } finally {
                Close();
            }
        }

        private void btnCancel_Click(object sender, EventArgs e) {
            Close();
        }

        private void btnApply_Click(object sender, EventArgs e) {
            ApplyChanges();
            applyButton.Enabled = false;
        }

        // ¥æ¡¼¥¶¡¼»ØÄꤵ¤ì¤¿ URI ¤¬Í­¸ú¤Ê RSS ¥Õ¥£¡¼¥É¤Ë¥Ý¥¤¥ó¥È¤¹¤ë¤«¤É¤¦¤«¤ò³Îǧ¤·¤Þ¤¹¡£
        private void validateButton_Click(object sender, EventArgs e) {
            try {
                // RssFeed.FromUri(rssFeedTextBox.Text);
            } catch {
                MessageBox.Show("Í­¸ú¤Ê RSS ¥Õ¥£¡¼¥É¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡£", "Í­¸ú¤Ê RSS ¥Õ¥£¡¼¥É¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡£", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            MessageBox.Show("Í­¸ú¤Ê RSS ¥Õ¥£¡¼¥É¤Ç¤¹¡£", "Í­¸ú¤Ê RSS ¥Õ¥£¡¼¥É¤Ç¤¹¡£", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
        }

        private void browseButton_Click(object sender, EventArgs e) {
            // [¥Õ¥¡¥¤¥ë¤ò³«¤¯] ¥À¥¤¥¢¥í¥°¤ò³«¤¤¤Æ¡¢¥¤¥á¡¼¥¸¤òÁªÂò¤·¤Þ¤¹¡£

            DialogResult result = backgroundImageFolderBrowser.ShowDialog();
            if (result == DialogResult.OK) {
                backgroundImageFolderTextBox.Text = backgroundImageFolderBrowser.SelectedPath;
                UpdateApply();
            }
        }

        private void rssFeedTextBox_TextChanged(object sender, EventArgs e) {
            UpdateApply();
        }

        private void backgroundImageFolderTextBox_TextChanged(object sender, EventArgs e) {
            UpdateApply();
        }

        private void backgroundImageOpenFileDialog_FileOk(object sender, System.ComponentModel.CancelEventArgs e) {

        }

        private void backgroundImageFolderBrowser_HelpRequest(object sender, EventArgs e) {

        }

        private void button1_Click(object sender, EventArgs e) {
            DialogResult result = videClipOpenFileDialog.ShowDialog();
            if (result == DialogResult.OK) {
                backgroundImageFolderTextBox.Lines = videClipOpenFileDialog.FileNames;
                UpdateApply();
            }
        }

        private void rssGroupBox_Enter(object sender, EventArgs e) {

        }
    }
}

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  public SimpleScreenSaver() {
    this.FormBorderStyle = FormBorderStyle.None;
    this.WindowState = FormWindowState.Maximized;
    this.KeyDown += new KeyEventHandler(this.MyKeyDown);
    this.MouseDown += new MouseEventHandler(this.MyMouseDown);
    this.Load += new EventHandler(this.MyLoad);
    this.ClientSize = new Size(640, 480);
    this.player = new Video("movie.avi");
    this.player.Owner = this;
  }

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2006-04-27 (Thu)

* C# ¤Ç¥¹¥¯¥ê¡¼¥ó¥»¡¼¥Ð¡¼¤òºî¤ë

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Visual Studio 2005 Express Edition ¤ò»È¤Ã¤Æ¥¹¥¯¥ê¡¼¥ó¥»¡¼¥Ð¡¼¤òºî¤ë¡£

2006-04-25 ¤Ç Visual Studio 2005 (VS2005) ¤Î¥¤¥ó¥¹¥È¡¼¥ë¤â½ª¤ï¤Ã¤¿¡£VS2005 ¤ò¥¤¥ó¥¹¥È¡¼¥ë¤·¤¿Íýͳ¤Î¡Öºî¤ê¤¿¤«¤Ã¤¿¤Á¤ç¤Ã¤È¤·¤¿¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¡×¤È¤Ï¥¹¥¯¥ê¡¼¥ó¥»¡¼¥Ð¡¼¤À¡£2006-04-20 ¤Î¡ÖFF12 ¤Î¥à¡¼¥Ó¡¼¤ò¥ê¥Ã¥Ô¥ó¥° (ripping) ¤·¤ÆºÆÀ¸¡×¤Ç¥ê¥Ã¥Ô¥ó¥°¤·¤¿ MPEG2 ¥à¡¼¥Ó¡¼¤òºÆÀ¸¤¹¤ë¥¹¥¯¥ê¡¼¥ó¥»¡¼¥Ð¡¼¤òºî¤ê¤¿¤¤¡£¤½¤¦¤¤¤¦¥¹¥¯¥ê¡¼¥ó¥»¡¼¥Ð¡¼¤Ï¤¹¤Ç¤Ë¤¤¤¯¤Ä¤«¤¢¤ë¤¬¡¢¤ä¤Ã¤Ñ¤ê¼«Ê¬¹¥¤ß¤Î¤â¤Î¤¬¤Û¤·¤¤¡£

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static void Main(string[] args) {
    if (args.Length > 0) {
        // 2 ʸ»ú¤Î¥³¥Þ¥ó¥É ¥é¥¤¥ó°ú¿ô¤ò¼èÆÀ¤·¤Þ¤¹¡£
        string arg = args[0].ToLower(CultureInfo.InvariantCulture).Trim().Substring(0, 2);
        switch (arg) {
            case "/c":
                // ¥ª¥×¥·¥ç¥ó ¥À¥¤¥¢¥í¥°¤òɽ¼¨¤·¤Þ¤¹¡£
                ShowOptions();
                break;
            case "/p":
                // ¥×¥ì¥Ó¥å¡¼¤ËÂФ·¤Æ²¿¤â¤·¤Þ¤»¤ó¡£
                break;
            case "/s":
                // ¥¹¥¯¥ê¡¼¥ó ¥»¡¼¥Ð¡¼¤Î¥Õ¥©¡¼¥à¤òɽ¼¨¤·¤Þ¤¹¡£
                ShowScreenSaver();
                break;
            default:
                MessageBox.Show("¥³¥Þ¥ó¥É ¥é¥¤¥ó°ú¿ô¤¬Ìµ¸ú¤Ç¤¹ :" + arg, "¥³¥Þ¥ó¥É ¥é¥¤¥ó°ú¿ô¤¬Ìµ¸ú¤Ç¤¹¡£", MessageBoxButtons.OK, MessageBoxIcon.Error);
                break;
        }
    } else {
        // ÅϤµ¤ì¤ë°ú¿ô¤¬¤Ê¤¤¾ì¹ç¡¢¥¹¥¯¥ê¡¼¥ó ¥»¡¼¥Ð¡¼¤òɽ¼¨¤·¤Þ¤¹¡£
        ShowScreenSaver();
    }
}

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2006-04-25 (Tue)

* Visual Studio 2005 Express Edition ¤ò¥¤¥ó¥¹¥È¡¼¥ë

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2006-03-03 (Fri)

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2006-02-20 (Mon)

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2006-02-10 (Fri)

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2006-02-02 (Thu)

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2006-01-26 (Thu)

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oreilly.com -- Online Catalog: Programming C#, Fourth Edition
http://www.oreilly.com/catalog/progcsharp4/
The fourth edition of Programming C#--the top-selling C# book on the market--has been updated to the C# ISO standard as well as changes to Microsoft's implementation of the language. It also provides notes and warnings on C# 1.1 and C# 2.0.

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2006-01-23 (Mon)

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- RegexOptions ÎóµóÂΤǤ褯»È¤¦¤â¤Î

¤Á¤Ê¤ß¤Ë System.Text.RegularExpressions.RegexOptions ÎóµóÂΤǤ褯»È¤¦¤Î¤Ï°Ê²¼¤Î3¤Ä¤«¤Ê¡£Perl ¤Ç¤â i m s ¤Ê¤É¤È¤·¤Æ»ØÄꤷ¤Æ¤¿¤è¤Í¡£ºÇ½é¤Ï m ¤È s ¤Î°ã¤¤¤ò¼Â´¶¤Ç¤­¤Ê¤«¤Ã¤¿¡£¤È¤¯¤Ë¡¢Æ±»þ¤Ë»ØÄꤷ¤¿¤é¤É¤¦¤Ê¤ë¤Î¤«¤¬¤ï¤«¤ê¤Ë¤¯¤«¤Ã¤¿¤Î¤Ç¡¢2003-03-25 ¤Î¡ÖPerl ¤ÎÀµµ¬É½¸½¤Î¥ª¥×¥·¥ç¥ó m ¤È s¡×¤Ç¤Ï ¼ÂºÝ¤Ë¤É¤¦»È¤¦¤«¤ò¤Þ¤È¤á¤¿¡£

RegexOptions ÎóµóÂÎ - System.Text.RegularExpressions
http://www.microsoft.com/japan/msdn/library/default.asp?url= ...
IgnoreCase
¸¡º÷»þ¤ËÂçʸ»ú¤È¾®Ê¸»ú¤ò¶èÊ̤·¤Ê¤¤¤³¤È¤ò»ØÄꤷ¤Þ¤¹¡£

Multiline
Ê£¿ô¹Ô¥â¡¼¥É¤ò»ØÄꤷ¤Þ¤¹¡£^ ¤È $ ¤Î°ÕÌ£¤òÊѹ¹¤·¤Æ¡¢Ê¸»úÎóÁ´ÂΤÎÀèÆ¬¤ÈËöÈø¤À¤±¤Ç¤Ê¤¯¡¢Ç¤°Õ¤Î¹Ô¤ÎÀèÆ¬¤ÈËöÈø¤Ë¤â¤½¤ì¤¾¤ì¤¬°ìÃפ¹¤ë¤è¤¦¤Ë¤·¤Þ¤¹¡£

Singleline
ñ°ì¹Ô¥â¡¼¥É¤ò»ØÄꤷ¤Þ¤¹¡£\n °Ê³°¤ÎǤ°Õ¤Îʸ»ú¤Ç¤Ï¤Ê¤¯¡¢¤¹¤Ù¤Æ¤Îʸ»ú¤È°ìÃפ¹¤ë¤è¤¦¤Ë¥Ô¥ê¥ª¥É (.) ¤Î°ÕÌ£¤òÊѹ¹¤·¤Þ¤¹¡£

2005-12-16 (Fri)

* Visual Studio 2005 Express Edition ÆüËܸìÈÇ¥À¥¦¥ó¥í¡¼¥É

¤³¤Îµ­»ö¤Îľ¥ê¥ó¥¯URL: Permlink | ¤³¤Îµ­»ö¤¬Â°¤¹¤ë¥«¥Æ¥´¥ê: [.net] [C#]

¤È¤¦¤È¤¦ Visual Studio 2005 ¤Î Express Edition ÆüËܸìÈǤΥÀ¥¦¥ó¥í¡¼¥É¤¬¤Ç¤­¤ë¤è¤¦¤Ë¤Ê¤Ã¤¿¡£

¸ø³«¤µ¤ì¤Æ¤¤¤ë¤Î¤Ï iso ¥¤¥á¡¼¥¸¤Ê¤Î¤Ç¡¢¥¤¥ó¥¹¥È¡¼¥ë¤Ï¤Á¤ç¤Ã¤ÈÌÌÅÝ¡£Daemon Tools ¤Ê¤É¤Î CD-ROM ²¾ÁÛ¥Þ¥¦¥ó¥È¥Ä¡¼¥ë¤¬¤¢¤ë¤ÈÊØÍø¡£

Visual C# 2005 Express Edition ÆüËܸìÈÇ
http://www.microsoft.com/japan/msdn/vstudio/express/vcsharp/
http://download.microsoft.com/download/9/5/7/9576E49E-1EDA-4 ...
md5: 58e69034c80218893d8e6973e763106c
sha1: db3d0f4d76e6603edd35e75038a5090ec1e25a71
crc32: ce838830

Visual Web Developer 2005 Express Edition ÆüËܸìÈÇ
http://www.microsoft.com/japan/msdn/vstudio/express/vwd/
http://download.microsoft.com/download/C/E/6/CE6B9F63-0E29-4 ...
crc32: df626aa6

¤È¤ê¤¢¤¨¤º Visual C# 2005 Express Edition ÆüËܸìÈǤò¥À¥¦¥ó¥í¡¼¥É¤·¤¿¡£Visual Web Developer 2005 Express Edition ¤Ï¤·¤Ð¤é¤¯»È¤¦µ¡²ñ¤Ï¤Ê¤¤¤È»×¤¦¡£¼ñÌ£¤Ç ASP.NET ¤Î¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤òºî¤Ã¤Æ¤â¡¢¸ø³«¤Ç¤­¤ë¥µ¥¤¥È¤¬¤Ê¤¤¤«¤é¡£

- Visual C++ 2005 ¤È Visual Basic 2005 ¤Ï¤¿¤Ö¤ó»È¤ï¤Ê¤¤

¤¢¤È¤Ï¥á¥â¤À¤±¡£¤¿¤Ö¤ó¤³¤ì¤â¼ñÌ£¤Ç»È¤¦¤³¤È¤Ï¤Ê¤¤¤À¤í¤¦¡£

Visual C++ 2005 Express Edition ÆüËܸìÈÇ
http://www.microsoft.com/japan/msdn/vstudio/express/visualc/
http://download.microsoft.com/download/8/E/8/8E85D539-2255-4 ...
crc32: B3AD1A2F

Visual Basic 2005 Express Edition ÆüËܸìÈÇ
http://www.microsoft.com/japan/msdn/vstudio/express/vbasic/
http://download.microsoft.com/download/A/B/4/AB4DA3D7-CC3A-4 ...
md5: ef27f47cbcda6daea1473084f7536a3c
sha1: 344c585cb517679b5dd20cfca05bca560e454f41
crc32: 6ee067f9

Visual J# ¤Ï±Ñ¸ìÈǤ·¤«¤Ê¤¤¤Î¤Ç¾Êά¡£

- .NET Framework 2.0 ¤È SDK

.NET Framework 2.0 ¤È SDK ¤âɬÍפʤΤ«¤Ê? VS.NET 2003 ¥¤¥ó¥¹¥È¡¼¥ë¤·¤¿¤È¤­¤Ï¤É¤¦¤·¤Æ¤¿¤Ã¤±? ¤È¤ê¤¢¤¨¤ºÁ´ÉôÆþ¤ì¤Æ¤ª¤¯¤«¡£

Download details: .NET Framework Version 2.0 Redistributable Package (x86)
http://www.microsoft.com/downloads/details.aspx?FamilyId=085 ...
http://download.microsoft.com/download/5/6/7/567758a3-759e-4 ...

Microsoft .NET Framework 2.0 ÆüËܸì Language Pack (x86)
http://www.microsoft.com/downloads/details.aspx?FamilyID=39c ...
http://download.microsoft.com/download/5/9/4/594a8f51-ba02-4 ...

¥À¥¦¥ó¥í¡¼¥É¤Î¾ÜºÙ : .NET Framework 2.0 SDK ÆüËܸìÈÇ (x86)
http://www.microsoft.com/downloads/details.aspx?FamilyID=FE6 ...
http://download.microsoft.com/download/5/7/2/57246de2-5e4c-4 ...
md5: d41d8cd98f00b204e9800998ecf8427e
sha1: da39a3ee5e6b4b0d3255bfef95601890afd80709
crc32: 00000000

- ¤È¤ê¤¢¤¨¤º¥À¥¦¥ó¥í¡¼¥É¤À¤±

¤È¤ê¤¢¤¨¤º¥À¥¦¥ó¥í¡¼¥É¤À¤±¤·¤¿¡£¥¤¥ó¥¹¥È¡¼¥ë¤Ï¤Þ¤¿¤¢¤È¤Ç¡£

2005-12-08 (Thu)

* C# ¤Ç¤Ù¤­¾è (Îß¾è) ¤ò°·¤¦¤Ë¤Ï Math.Pow()

¤³¤Îµ­»ö¤Îľ¥ê¥ó¥¯URL: Permlink | ¤³¤Îµ­»ö¤¬Â°¤¹¤ë¥«¥Æ¥´¥ê: [C#]

C# ¤Ë¤Ï¤Ù¤­¾è (Îß¾è) ¤ò°·¤¦¤¿¤á¤Î±é»»»Ò¤Ï¸ºß¤·¤Ê¤¤¡£ ^ ¤ÏÏÀÍý±é»»»Ò¤Ç¡¢¤Ù¤­¾è¤ò·×»»¤¹¤ë±é»»»Ò¤Ç¤Ï¤Ê¤¤¡£
±é»»»Ò¤Ï¸ºß¤·¤Ê¤¤¤Î¤Ç¡¢Math.Pow() ¤ò»È¤¦¡£

C# ¥×¥í¥°¥é¥Þ¡¼¥º ¥ê¥Õ¥¡¥ì¥ó¥¹ C# ¤Î±é»»»Ò
http://www.microsoft.com/japan/msdn/library/default.asp?url= ...

Math.Pow ¥á¥½¥Ã¥É
http://www.microsoft.com/japan/msdn/library/ja/cpref/html/fr ...
»ØÄê¤Î¿ôÃͤò»ØÄꤷ¤¿ÃͤÇÎ߾褷¤¿ÃͤòÊÖ¤·¤Þ¤¹

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2005-11-30 (Wed)

* C# ¤Î StringBuilder ¤È += ¤Ë¤è¤ëʸ»úÎóÏ¢·ë¤Î®ÅÙÈæ³Ó

¤³¤Îµ­»ö¤Îľ¥ê¥ó¥¯URL: Permlink | ¤³¤Îµ­»ö¤¬Â°¤¹¤ë¥«¥Æ¥´¥ê: [.net] [C#]

C# ¤Çʸ»úÎóÏ¢·ë¤¹¤ë¤È¤­¡¢string ·¿¤ò += ¤ÇÏ¢·ë¤¹¤ë¤È¥Ñ¥Õ¥©¡¼¥Þ¥ó¥¹¤¬Íî¤Á¤ë¤Î¤Ç¡¢¤¢¤ëÄøÅ٤βó¿ô°Ê¾å¤Îʸ»úÎóÏ¢·ë¤Ë¤Ï StringBuilder ¤ò»È¤¦¤È¤¤¤¦¤³¤È¤¬¾ï¼±¤È¤Ê¤Ã¤Æ¤¤¤ë¡£string ¤ÏÉÔÊѤʤΤǡ¢Ï¢·ë¤ÎÅ٤˿·¤·¤¤¥ª¥Ö¥¸¥§¥¯¥È¤ÎÀ¸À®¤ÈÇË´þ¤¬¤ª¤³¤Ê¤ï¤ì¤ë¤«¤é¤È¤¤¤¦¤Î¤¬º¹¤ÎȯÀ¸¸¶°ø¡£

¤¿¤À¡¢»ä¤Ï¼ÂºÝ¤É¤ÎÄøÅÙÀ­Ç½¤¬Îô²½¤¹¤ë¤Î¤«·×¬¤·¤¿¤³¤È¤¬¤Ê¤¤¡£¤³¤Î¤Þ¤Þ¤À¤È¥³¡¼¥É¥ì¥Ó¥å¡¼¤Î»þ¤Ë¡ÖStringBuilder »È¤¨¡×¤È»ØÅ¦¤ò¤·¤Æ¤â¡¢¤½¤Îº¬µò¤È¤Ê¤ë¿ôÃͤò¼¨¤»¤Ê¤¤¡£¸åÇڤʤɤˡַ׬¤â¤·¤Ê¤¤¤ÇÀ­Ç½¤¬Íî¤Á¤ë¤Ê¤ó¤Æ¸À¤Ã¤Æ¤ë¤ó¤Ç¤¹¤«? À­Ç½¤òÍýͳ¤Ë¥³¡¼¥É¤ò½ñ¤­´¹¤¨¤ë¤È¤­¤Ï¤Þ¤º·×¬¤·¤í¤Ã¤Æ¸À¤Ã¤Æ¤¿¤Î¤ÏºØÆ£¤µ¤ó¤¸¤ã¤Ê¤¤¤Ç¤¹¤«?¡×¤È¤«¸À¤ï¤ì¤«¤Í¤Ê¤¤¤Î¤Ç¡¢·×¬¤·¤Æ¤ß¤ë¡£¹¬¤¤¤Ê¤³¤È¤Ë¡¢»ä¤Î½ê¤Ë¤Ï¤³¤ÎÄøÅ٤λØÅ¦¤ò¤¹¤ëɬÍפΤ¢¤ë¸åÇڤϤ¤¤Ê¤¤¤Î¤ÇÌäÂê¤Ê¤¤¤±¤É¡£

- ·×¬ÍÑ¥³¡¼¥É

·¹¸þ¤¬¤ï¤«¤ì¤Ð¤¤¤¤¤Î¤Ç¡¢¥³¡¼¥É¤Ï´Êñ¤Ë½ñ¤¤¤¿¡£

using System;
using System.Text;

namespace ConsoleApplication1
{
    /// <summary>
    /// Class1 ¤Î³µÍפÎÀâÌÀ¤Ç¤¹¡£
    /// </summary>
    class Class1
    {
        /// <summary>
        /// ʸ»úÎóÏ¢·ë¤Î®ÅÙÈæ³Ó
        /// </summary>
        [STAThread]
        static void Main(string[] args) {

            int times = 100000;
            Console.WriteLine("{0:d} times loop.", times);

            DateTime start_str = DateTime.Now;
            string str = string.Empty;
            for (int i = 0; i < times; i++) {
                str += i.ToString();
            }
            Console.WriteLine("String += : " + (DateTime.Now - start_str).ToString());


            DateTime start_str_builder_default = DateTime.Now;
            System.Text.StringBuilder sb_default = new System.Text.StringBuilder();
            for (int i = 0; i < times; i++) {
                sb_default.Append(i);
            }
            Console.WriteLine("StringBuilder: " + (DateTime.Now - start_str_builder_default).ToString());
        }
    }
}

¤Á¤Ê¤ß¤Ë¼Â¹Ô´Ä¶­¤Ï°Ê²¼¤ÎÄ̤ꡣ
ÉÙ»ÎÄÌ FMV-E600 Celeron 1.7GHz 512MB Memory
Visual Studio 2003 C# ¤Î¥³¥ó¥½¡¼¥ë¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤È¤·¤ÆºîÀ®¡£
Debug ¥â¡¼¥É¤Ç¥³¥ó¥Ñ¥¤¥ë¤·¡¢CTRL + F5 ¤Ç¼Â¹Ô¡£

- ·×¬·ë²Ì

·×¬¤·¤¿·ë²Ì¡£times ¤Î¿ô¤òÊѤ¨¤Æ3¥Ñ¥¿¡¼¥ó·×¬¡£

1000 times loop.
String += : 00:00:00.0156250
StringBuilder: 00:00:00

Àé²ó¤Î¥ë¡¼¥×¡£StringBuilder ¤ò»È¤Ã¤¿¤È¤­¤Î½êÍ×»þ´Ö¤¬¥¼¥í¤Ë¤Ê¤Ã¤Æ¤ë¡£¤³¤Î¥¿¥¤¥Þ¡¼¤ÎÀºÅÙ¤Ï 15¥ß¥êÉÃñ°Ì¤Ç½ÐÎϤǤ­¤ëÄøÅÙ¤À¤Ã¤±? ¤½¤ÎÈÏ°ÏÆâ¤Ë¼ý¤Þ¤Ã¤Á¤ã¤Ã¤¿¤Ã¤Æ¤³¤È¤«¡£²¿¤Ë¤»¤è1000²ó¤¸¤ã¾¯¤Ê¤¤¤Ê¤¢¡£

10000 times loop.
String += : 00:00:01.8125000
StringBuilder: 00:00:00.0156250

°ìËü²ó¤Î¥ë¡¼¥×¡£É´Çܤ¯¤é¤¤°ã¤¦¤Ê¡£¼ÂºÝ¤Ë¤Ï¤¤¤í¤¤¤í̵Ãã¤ò¤ä¤Ã¤¿Ê¬¤ËÉտ魯¤ë¥³¥¹¥È¤â²Ã»»¤µ¤ì¤ë¤À¤í¤¦¤«¤é¡¢´Ä¶­¤Ë¤è¤Ã¤Æº¹¤ÏÊÑÆ°¤¹¤ë¤«¤â¤·¤ì¤Ê¤¤¡£

100000 times loop.
String += : 00:05:20.5000000
StringBuilder: 00:00:00.0781250

½½Ëü²ó¤Î¥ë¡¼¥×¡£+= ¤ÎÊý¤ÏÂѤ¨¤é¤ì¤Ê¤¤¤¯¤é¤¤ÃÙ¤¤¡£»Ø¿ôŪ¤Ë½èÍý»þ´Ö¤¬ÁýÂ礷¤Æ¤¤¤ë¡£°ìÊý¡¢StringBuilder ¤Ï°ÂÄꤷ¤Æ¤¤¤ë¤Ê¡£

¤³¤ì¤À¤±º¹¤¬¤¢¤ì¤Ð¡¢StringBuilder »È¤¨¤È¤¤¤¦º¬µò¤Ï¼¨¤»¤ë¤Í¡£»È¤¦´ð½à¤È¤·¤Æ¤Ï¡¢¥ë¡¼¥×Æâ¤À¤Ã¤¿¤é̤鷺 StringBuilder¡£²ó¿ô¤¬¸ÇÄêŪ¤Ê¥ë¡¼¥×¤Ç¤â¡¢ÀßÄê¤ÎÃͤä»ÅÍͤ¬ÊѤï¤Ã¤Æ¥ë¡¼¥×²ó¿ô¤¬ÊѤï¤ë¤Î¤ÏÎɤ¯¤¢¤ë¤³¤È¤À¤·¡£¥ë¡¼¥×³°¤Ç¤â²ó¿ô¤¬Â¿¤±¤ì¤Ð StringBuilder¡£¥ë¡¼¥×³°¤Ç¡¢¤«¤Ä°ì·åÄøÅ٤βó¿ô¤·¤«Ï¢·ë¤·¤Ê¤¤¤ó¤À¤Ã¤¿¤é += ¤Ç¤â¤¤¤¤¡£

¤È¤³¤í¤Ç¡¢¥³¥ó¥Ñ¥¤¥é¤Ï += ¤ò StringBuilder ¤ËÃÖ¤­´¹¤¨¤ë¤È¤¤¤¦ºÇŬ²½¤È¤«¤·¤Æ¤¯¤ì¤Ê¤¤¤Î¤«¤Ê¡£¤³¤ÎÌäÂê¤Ë¤Ä¤¤¤Æ¤Ï¡¢¿Í´Ö¤¬Å¬ÀÚ¤Êʸ»úÎóÏ¢·ë¼êË¡¤òÁª¤ÖÊý¤¬¥¹¥Þ¡¼¥È¤À¤È»×¤¦¤±¤É¡¢¥³¥ó¥Ñ¥¤¥é¤Ë¤è¤ëÎ϶ȤDzò·è¤Ç¤­¤Ê¤¤¤Î¤«¤Ê¡£

- StringBuilder ¤Î¥­¥ã¥Ñ¥·¥Æ¥£¤Î½é´ü¥µ¥¤¥º¤Ë¤è¤ë®Å٤ΰ㤤

StringBuilder ¤ÏÆâÉô¥Ð¥Ã¥Õ¥¡¤ò»ý¤Ã¤Æ¤¤¤ë¡£°·¤¦¥Ç¡¼¥¿¤Î¤ª¤ª¤è¤½¤Î¥µ¥¤¥º¤¬¤¢¤é¤«¤¸¤á¤ï¤«¤Ã¤Æ¤¤¤ë¤Ê¤é¡¢¤½¤Î¥Ð¥Ã¥Õ¥¡¤Î¥­¥ã¥Ñ¥·¥Æ¥£¤ò¥³¥ó¥¹¥È¥é¥¯¥¿¤Ë»ØÄꤷ¤Æ¤ª¤¤¤¿Êý¤¬¡¢¥Ð¥Ã¥Õ¥¡¤Î³ÈÄ¥¤Î¥ª¡¼¥Ð¡¼¥Ø¥Ã¥É¤òÍÞ¤¨¤é¤ì¤ë¤Î¤Ç®¤¯¤Ê¤ë¤È¤Î¤³¤È¡£¤³¤ì¤Ë¤Ä¤¤¤Æ¤â·×¬¤·¤Æ¤ß¤¿¡£

·×¬¤Ë»È¤Ã¤¿¥³¡¼¥É¤Ï°Ê²¼¤ÎÄ̤ꡣ´Ä¶­¤ÏÊѹ¹¤Ê¤·¡£
¥Ð¥Ã¥Õ¥¡¥µ¥¤¥º¤Ï 1, 8, 64, 256, 1024, 8192, 16384, 65536, 16777216 ¤ò»î¤¹¤³¤È¤Ë¤·¤¿¡£¤³¤Î¿ôÃͤꬵò¤Ï´ª¡£¤Á¤Ê¤ß¤Ë²¿¤â»ØÄꤷ¤Ê¤¤¾ì¹ç¤Î¥Ç¥Õ¥©¥ë¥È¤Ï 16 ¤À¤½¤¦¤À¡£

using System;
using System.Text;

namespace ConsoleApplication1
{
    /// <summary>
    /// Class1 ¤Î³µÍפÎÀâÌÀ¤Ç¤¹¡£
    /// </summary>
    class Class1 {
        /// <summary>
        /// ʸ»úÎóÏ¢·ë¤Î®ÅÙÈæ³Ó
        /// </summary>
        [STAThread]
        static void Main(string[] args) {

            int times = 1000000;
            Console.WriteLine("{0:d} times loop.", times);

            DateTime start_str_builder_default = DateTime.Now;
            System.Text.StringBuilder sb_default = new System.Text.StringBuilder();
            for (int i = 0; i < times; i++) {
                sb_default.Append(i);
            }
            Console.WriteLine("StringBuilder: Capacity: Default: " + (DateTime.Now - start_str_builder_default).ToString());

            int[] capacity_list = {1, 8, 64, 256, 1024, 8192, 16384, 65536, 16777216};
            foreach (int capacity in capacity_list) {
                DateTime start_str_builder = DateTime.Now;
                System.Text.StringBuilder sb = new System.Text.StringBuilder(capacity);
                for (int i = 0; i < times; i++) {
                    sb.Append(i);
                }
                Console.WriteLine("StringBuilder: Capacity: " + capacity.ToString() + " : " + (DateTime.Now - start_str_builder).ToString());
            }
        }
    }
}

1000000 times loop.
StringBuilder: Capacity: Default: 00:00:00.8437500
StringBuilder: Capacity: 1 : 00:00:00.8281250
StringBuilder: Capacity: 8 : 00:00:00.8593750
StringBuilder: Capacity: 64 : 00:00:00.8281250
StringBuilder: Capacity: 256 : 00:00:00.8593750
StringBuilder: Capacity: 1024 : 00:00:00.9375000
StringBuilder: Capacity: 8192 : 00:00:00.8593750
StringBuilder: Capacity: 16384 : 00:00:00.8750000
StringBuilder: Capacity: 65536 : 00:00:00.8593750
StringBuilder: Capacity: 16777216 : 00:00:00.8125000

¤Þ¤º¤ÏÉ´Ëü²ó¡£¤¦¡¼¤ó¡¢¤¢¤ó¤Þ¤êÊѤï¤é¤Ê¤¤¤Í¡£¤Û¤ó¤Î¾¯¤·¤À¤±Ãͤ¬ÊÑÆ°¤·¤Æ¤ë¤±¤É¡¢É´Ê¬¤Î°ìÉÃ¥ì¥Ù¥ë¡£F-ZERO ¤Ç¥¿¥¤¥à¥¢¥¿¥Ã¥¯¤¹¤ë¤Ê¤éÂ礭¤Ê°ã¤¤¤À¤±¤É¡¢¤³¤³¤Ç¤Ï¤½¤³¤Þ¤Ç½ÅÍפʰÕÌ£¤Ï»ý¤Ã¤Æ¤¤¤Ê¤¤¤È»×¤¦¡£¸íº¹¤ÎÈϰϡ£

3000000 times loop.
StringBuilder: Capacity: Default: 00:00:02.7031250
StringBuilder: Capacity: 1 : 00:00:02.6562500
StringBuilder: Capacity: 8 : 00:00:02.7968750
StringBuilder: Capacity: 64 : 00:00:02.8437500
StringBuilder: Capacity: 256 : 00:00:02.9687500
StringBuilder: Capacity: 1024 : 00:00:02.8437500
StringBuilder: Capacity: 8192 : 00:00:02.9687500
StringBuilder: Capacity: 16384 : 00:00:02.8593750
StringBuilder: Capacity: 65536 : 00:00:02.9687500
StringBuilder: Capacity: 16777216 : 00:00:02.9062500

»°É´Ëü²ó¤ËÁý¤ä¤·¤Æ¤â¤¢¤Þ¤êÊѤï¤é¤Ê¤¤¤Í¡£ËÜÅö¤Ï¤³¤Î¤¢¤È°ìÀéËü²ó¤â»î¤½¤¦¤È¤·¤¿¤ó¤À¤±¤É¡¢512MB ¤Î¥á¥â¥ê¤·¤«¤Ê¤¤»ä¤Î¥Þ¥·¥ó¤Ç¤Ï¥á¥â¥ê¤ò»È¤¤¿Ô¤¯¤·¤Æ¥¹¥ï¥Ã¥×¤¬È¯À¸¤·»Ï¤á¤¿¤Î¤Ç¼è¤ê¤ä¤á¤¿¡£

¥­¥ã¥Ñ¥·¥Æ¥£¤ò»ØÄꤷ¤¿¾ì¹ç¤È¤½¤¦¤Ç¤Ê¤¤¾ì¹ç¤ÇÍ­°Õ¤Êº¹¤Ï¸«¤¤¤À¤»¤Ê¤«¤Ã¤¿¡£¤â¤Á¤í¤ó¡¢¼Â¹Ô´Ä¶­¤ä¥Ç¡¼¥¿¤Î¥µ¥¤¥º¤Ë¤è¤Ã¤Æ¤âÊÑÆ°¤·¤Æ¤¯¤ë¤È¤Ï»×¤¦¡£¤¿¤À¡¢¥­¥ã¥Ñ¥·¥Æ¥£¤ÎÃͤϤȤꤢ¤¨¤º¥Ç¥Õ¥©¥ë¥È¤Ç¤âÎɤ¤¤«¤Ê¤¢¡£¤È¤Ë¤«¤¯ += ¤¸¤ã¤Ê¤¯¤Æ StringBuilder ¤ò»È¤¦Êý¤¬ÂçÀڤäƤ³¤È¤À¤Ê¡£¶Ë¸Â¤Þ¤Ç¥Á¥å¡¼¥Ë¥ó¥°¤¹¤ëɬÍפ¬¤¢¤ë¤È¤­¤Ï¡¢·×¬¤·¤¿¾å¤Ç¤É¤¦¤¹¤ë¤«·è¤á¤ì¤ÐÎɤ¤¡£¤Ç¤â¡¢¤½¤¦¤¤¤¦»þ¤Ã¤Æ¤¿¤Ö¤ó StringBuilder °Ê³°¤Ë¥Ü¥È¥ë¥Í¥Ã¥¯¤¬¤¢¤ê¤½¤¦¤Êµ¤¤¬¤¹¤ë¡£

2005-11-22 (Tue)

* Visual Studio ¥æ¡¼¥¶¡¼¥°¥ë¡¼¥× ¥Õ¥©¡¼¥é¥à¤Î OPML

¤³¤Îµ­»ö¤Îľ¥ê¥ó¥¯URL: Permlink | ¤³¤Îµ­»ö¤¬Â°¤¹¤ë¥«¥Æ¥´¥ê: [RSS] [.net] [C#]

ÀèÆü¡¢Visual Studio ¤Î¥æ¡¼¥¶¡¼¥°¥ë¡¼¥× VSUG ¤¬È¯Â­¤·¤¿¡£

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http://vsug.jp/

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2005-10-10 (Mon)

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2005-09-13 (Tue)

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2005-08-30 (Tue)

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2005-08-28 (Sun)

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2005-08-22 (Mon)

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2005-08-16 (Tue)

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NUnit ¸þ¤±¤Î¥Æ¥¹¥È¤¬Æþ¤Ã¤Æ¤ë¤±¤É¡¢ÀèÆ¬¹Ô¤Î [Test] ¤È aes_encrypt_decrypt_sample() ¥á¥½¥Ã¥É¤Î Assert.AreEqual(str, decoded); ¤òºï½ü¤¹¤ì¤ÐÌäÂê¤Ê¤¯Æ°¤¯¡£

using System.IO;
using System.Security.Cryptography;

private byte[] _key;
private byte[] _IV;

[Test]
public void aes_encrypt_decrypt_sample() {
    string str = @"ÂоΥ¢¥ë¥´¥ê¥º¥à¤Ç¤Î°Å¹æ²½¤Ç¤Ï¡¢¥¹¥È¥ê¡¼¥à¤¬ÍøÍѤµ¤ì¤Þ¤¹¡£¥¹¥È¥ê¡¼¥à¤òÍøÍѤ¹¤ë¤³¤È¤Ç¡¢¥Ç¡¼¥¿ÍѤÎÃæ´Ö¥¹¥È¥ì¡¼¥¸¤âɬÍפȤ»¤º¡¢ÍÍ¡¹¤Ê¥Ç¡¼¥¿ ¥¢¥¯¥»¥¹¤Î¼êË¡¤òÄ󶡤·¤Þ¤¹¡£¤Þ¤¿¡¢ÂоΥ¢¥ë¥´¥ê¥º¥à¡¢¥Ï¥Ã¥·¥å¥¢¥ë¥´¥ê¥º¥à¤Ç¶¦Ä̤ΠCryptoStream ¤òÍøÍѤ¹¤ë¤³¤È¤Ç¡¢¤è¤ê»È¤¤¤ä¤¹¤¤¥¤¥ó¥¿¥Õ¥§¡¼¥¹¤òÄ󶡤·¤Þ¤¹¡£";

    RijndaelManaged aes = new RijndaelManaged();
    aes.GenerateKey();
    aes.GenerateIV();
    _key = aes.Key;
    _IV = aes.IV;

    string encoded = encrypt(str);
    string decoded = decrypt(encoded);
    Assert.AreEqual(str, decoded);
}

/// <summary>
/// ʸ»úÎó¤ò°Å¹æ²½
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
private string encrypt(string str) {
    byte[] source = Encoding.Unicode.GetBytes(str);
    RijndaelManaged aes = new RijndaelManaged();
    byte[] destination;
    using (MemoryStream ms = new MemoryStream())
    using (CryptoStream cs = new CryptoStream(ms, aes.CreateEncryptor(_key, _IV), CryptoStreamMode.Write)) {
        cs.Write(source, 0, source.Length);
        cs.FlushFinalBlock();
        destination = ms.ToArray();
    }
    return Encoding.Unicode.GetString(destination);
}

/// <summary>
/// ʸ»úÎó¤òÉü¹æ²½
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
private string decrypt(string str) {
    byte[] source = Encoding.Unicode.GetBytes(str);
    RijndaelManaged aes = new RijndaelManaged();
    byte[] destination;
    using (MemoryStream ms = new MemoryStream())
    using (CryptoStream cs = new CryptoStream(ms, aes.CreateDecryptor(_key, _IV), CryptoStreamMode.Write)) {
        cs.Write(source, 0, source.Length);
        cs.FlushFinalBlock();
        destination = ms.ToArray();
    }
    return Encoding.Unicode.GetString(destination);
}

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2005-08-04 (Thu)

* C# ¤Çʸ»úÎó¤È byte ÇÛÎó¤ÎÊÑ´¹

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using System.Text;

string str = "ʸ»úÎó";
byte[] byteArray = Encoding.Unicode.GetBytes(str);

byte ¤ÎÇÛÎ󤫤é string ¤ËÊÑ´¹¤¹¤ë¤Ë¤Ï System.Text.Encoding.Unicode.GetString ¥á¥½¥Ã¥É¤ò»È¤¦¡£
string strFromByte = Encoding.Unicode.GetString(byteArray);

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2005-07-28 (Thu)

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2005-06-27 (Mon)

* DateTime.Parse ¤È DateTime.ParseExact ¤Î°ã¤¤

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