本文实例总结了几个非常实用的C#代码。分享给大家供大家参考，具体如下：
1. C#在托盘显示图标
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace notifyIconShow
{
public partial class notifyIconShow : Form
{
public notifyIconShow()
{
InitializeComponent();
}
#region//设置鼠标放在托盘图标上面的文字
/// <summary>
/// 方法名称：notifyIconShow_Load(窗体加载事件)
/// 方法作用：设置鼠标放在托盘图标上面的文字
/// 完成日期：2010年5月16日
/// 作者：心语
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void notifyIconShow_Load( object sender, EventArgs e)
{
//设置鼠标放在托盘图标上面的文字
this .notifyIcon1.Text = "心语托盘图标" ;
}
#endregion
#region//创建对象及声明变量
//创建NotifyIcon对象
NotifyIcon notifyicon = new NotifyIcon();
//创建托盘图标对象
Icon ico = new Icon( "Clock2.ico" );
//创建托盘菜单对象
ContextMenu notifyContextMenu = new ContextMenu();
#endregion
#region//隐藏任务栏图标，显示托盘图标
/// <summary>
/// 方法名称：notifyIconShow_SizeChanged(窗体大小改变后事件)
/// 方法作用：隐藏任务栏图标，显示托盘图标
/// 完成日期：2010年5月16日
/// 作者：心语
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void notifyIconShow_SizeChanged( object sender, EventArgs e)
{
//判断是否选择的是最小化按钮
if (WindowState == FormWindowState.Minimized)
{
//托盘显示图标等于托盘图标对象
//注意notifyIcon1是控件的名字而不是对象的名字
notifyIcon1.Icon = ico;
//隐藏任务栏区图标
this .ShowInTaskbar = false ;
//图标显示在托盘区
notifyicon.Visible = true ;
}
}
#endregion
#region//还原窗体
/// <summary>
/// 方法名称：notifyIcon1_Click（托盘图标单击）
/// 方法作用：还原窗体
/// 完成日期：2010年5月16日
/// 作者：心语
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void notifyIcon1_Click( object sender, EventArgs e)
{
//判断是否已经最小化于托盘
if (WindowState == FormWindowState.Minimized)
{
//还原窗体显示
WindowState = FormWindowState.Normal;
//激活窗体并给予它焦点
this .Activate();
//任务栏区显示图标
this .ShowInTaskbar = true ;
//托盘区图标隐藏
notifyicon.Visible = false ;
}
}
#endregion
}
}
2. C#求最小公倍数
class Program
{
static void Main( string [] args)
{
int n = m(20, 15);
System.Console.WriteLine( "最小公倍数为:" + n.ToString());
System.Console.Read();
}
static int f( int a, int b) //最大公约数
{
if (a < b) { a = a + b; b = a - b; a = a - b; }
return (a % b == 0) ? b : f(a % b, b);
}
static int m( int a, int b) //最小公倍数
{
return a * b / f(a, b);
}
}
3. C#汉字转拼音
/// <summary>
/// 把汉字转换成拼音(全拼)
/// </summary>
/// <param name="hzString">汉字字符串</param>
/// <returns>转换后的拼音(全拼)字符串</returns>
public static string ConvertE( string hzString)
{
// 匹配中文字符
Regex regex = new Regex( "^[\u4e00-\u9fa5]$" );
byte [] array = new byte [2];
string pyString = "" ;
int chrAsc = 0;
int i1 = 0;
int i2 = 0;
char [] noWChar = hzString.ToCharArray();
for ( int j = 0; j < noWChar.Length; j++)
{
// 中文字符
if (regex.IsMatch(noWChar[j].ToString()))
{
array = System.Text.Encoding.Default.GetBytes(noWChar[j].ToString());
i1 = ( short )(array[0]);
i2 = ( short )(array[1]);
chrAsc = i1 * 256 + i2 - 65536;
if (chrAsc > 0 && chrAsc < 160)
{
pyString += noWChar[j];
}
else
{
// 修正部分文字
if (chrAsc == -9254) // 修正[圳]字
pyString += "Zhen" ;
else
{
for ( int i = (pyValue.Length - 1); i >= 0; i--)
{
if (pyValue[i] <= chrAsc)
{
pyString += pyName[i];
break ;
}
}
}
}
}
// 非中文字符
else
{
pyString += noWChar[j].ToString();
}
}
return pyString;
}
private static int [] pyValue = new int []
{
-20319,-20317,-20304,-20295,-20292,-20283,-20265,-20257,-20242,-20230,-20051,-20036,
-20032,-20026,-20002,-19990,-19986,-19982,-19976,-19805,-19784,-19775,-19774,-19763,
-19756,-19751,-19746,-19741,-19739,-19728,-19725,-19715,-19540,-19531,-19525,-19515,
-19500,-19484,-19479,-19467,-19289,-19288,-19281,-19275,-19270,-19263,-19261,-19249,
-19243,-19242,-19238,-19235,-19227,-19224,-19218,-19212,-19038,-19023,-19018,-19006,
-19003,-18996,-18977,-18961,-18952,-18783,-18774,-18773,-18763,-18756,-18741,-18735,
-18731,-18722,-18710,-18697,-18696,-18526,-18518,-18501,-18490,-18478,-18463,-18448,
-18447,-18446,-18239,-18237,-18231,-18220,-18211,-18201,-18184,-18183, -18181,-18012,
-17997,-17988,-17970,-17964,-17961,-17950,-17947,-17931,-17928,-17922,-17759,-17752,
-17733,-17730,-17721,-17703,-17701,-17697,-17692,-17683,-17676,-17496,-17487,-17482,
-17468,-17454,-17433,-17427,-17417,-17202,-17185,-16983,-16970,-16942,-16915,-16733,
-16708,-16706,-16689,-16664,-16657,-16647,-16474,-16470,-16465,-16459,-16452,-16448,
-16433,-16429,-16427,-16423,-16419,-16412,-16407,-16403,-16401,-16393,-16220,-16216,
-16212,-16205,-16202,-16187,-16180,-16171,-16169,-16158,-16155,-15959,-15958,-15944,
-15933,-15920,-15915,-15903,-15889,-15878,-15707,-15701,-15681,-15667,-15661,-15659,
-15652,-15640,-15631,-15625,-15454,-15448,-15436,-15435,-15419,-15416,-15408,-15394,
-15385,-15377,-15375,-15369,-15363,-15362,-15183,-15180,-15165,-15158,-15153,-15150,
-15149,-15144,-15143,-15141,-15140,-15139,-15128,-15121,-15119,-15117,-15110,-15109,
-14941,-14937,-14933,-14930,-14929,-14928,-14926,-14922,-14921,-14914,-14908,-14902,
-14894,-14889,-14882,-14873,-14871,-14857,-14678,-14674,-14670,-14668,-14663,-14654,
-14645,-14630,-14594,-14429,-14407,-14399,-14384,-14379,-14368,-14355,-14353,-14345,
-14170,-14159,-14151,-14149,-14145,-14140,-14137,-14135,-14125,-14123,-14122,-14112,
-14109,-14099,-14097,-14094,-14092,-14090,-14087,-14083,-13917,-13914,-13910,-13907,
-13906,-13905,-13896,-13894,-13878,-13870,-13859,-13847,-13831,-13658,-13611,-13601,
-13406,-13404,-13400,-13398,-13395,-13391,-13387,-13383,-13367,-13359,-13356,-13343,
-13340,-13329,-13326,-13318,-13147,-13138,-13120,-13107,-13096,-13095,-13091,-13076,
-13068,-13063,-13060,-12888,-12875,-12871,-12860,-12858,-12852,-12849,-12838,-12831,
-12829,-12812,-12802,-12607,-12597,-12594,-12585,-12556,-12359,-12346,-12320,-12300,
-12120,-12099,-12089,-12074,-12067,-12058,-12039,-11867,-11861,-11847,-11831,-11798,
-11781,-11604,-11589,-11536,-11358,-11340,-11339,-11324,-11303,-11097,-11077,-11067,
-11055,-11052,-11045,-11041,-11038,-11024,-11020,-11019,-11018,-11014,-10838,-10832,
-10815,-10800,-10790,-10780,-10764,-10587,-10544,-10533,-10519,-10331,-10329,-10328,
-10322,-10315,-10309,-10307,-10296,-10281,-10274,-10270,-10262,-10260,-10256,-10254
};
private static string [] pyName = new string []
{
"A" , "Ai" , "An" , "Ang" , "Ao" , "Ba" , "Bai" , "Ban" , "Bang" , "Bao" , "Bei" , "Ben" ,
"Beng" , "Bi" , "Bian" , "Biao" , "Bie" , "Bin" , "Bing" , "Bo" , "Bu" , "Ba" , "Cai" , "Can" ,
"Cang" , "Cao" , "Ce" , "Ceng" , "Cha" , "Chai" , "Chan" , "Chang" , "Chao" , "Che" , "Chen" , "Cheng" ,
"Chi" , "Chong" , "Chou" , "Chu" , "Chuai" , "Chuan" , "Chuang" , "Chui" , "Chun" , "Chuo" , "Ci" , "Cong" ,
"Cou" , "Cu" , "Cuan" , "Cui" , "Cun" , "Cuo" , "Da" , "Dai" , "Dan" , "Dang" , "Dao" , "De" ,
"Deng" , "Di" , "Dian" , "Diao" , "Die" , "Ding" , "Diu" , "Dong" , "Dou" , "Du" , "Duan" , "Dui" ,
"Dun" , "Duo" , "E" , "En" , "Er" , "Fa" , "Fan" , "Fang" , "Fei" , "Fen" , "Feng" , "Fo" ,
"Fou" , "Fu" , "Ga" , "Gai" , "Gan" , "Gang" , "Gao" , "Ge" , "Gei" , "Gen" , "Geng" , "Gong" ,
"Gou" , "Gu" , "Gua" , "Guai" , "Guan" , "Guang" , "Gui" , "Gun" , "Guo" , "Ha" , "Hai" , "Han" ,
"Hang" , "Hao" , "He" , "Hei" , "Hen" , "Heng" , "Hong" , "Hou" , "Hu" , "Hua" , "Huai" , "Huan" ,
"Huang" , "Hui" , "Hun" , "Huo" , "Ji" , "Jia" , "Jian" , "Jiang" , "Jiao" , "Jie" , "Jin" , "Jing" ,
"Jiong" , "Jiu" , "Ju" , "Juan" , "Jue" , "Jun" , "Ka" , "Kai" , "Kan" , "Kang" , "Kao" , "Ke" ,
"Ken" , "Keng" , "Kong" , "Kou" , "Ku" , "Kua" , "Kuai" , "Kuan" , "Kuang" , "Kui" , "Kun" , "Kuo" ,
"La" , "Lai" , "Lan" , "Lang" , "Lao" , "Le" , "Lei" , "Leng" , "Li" , "Lia" , "Lian" , "Liang" ,
"Liao" , "Lie" , "Lin" , "Ling" , "Liu" , "Long" , "Lou" , "Lu" , "Lv" , "Luan" , "Lue" , "Lun" ,
"Luo" , "Ma" , "Mai" , "Man" , "Mang" , "Mao" , "Me" , "Mei" , "Men" , "Meng" , "Mi" , "Mian" ,
"Miao" , "Mie" , "Min" , "Ming" , "Miu" , "Mo" , "Mou" , "Mu" , "Na" , "Nai" , "Nan" , "Nang" ,
"Nao" , "Ne" , "Nei" , "Nen" , "Neng" , "Ni" , "Nian" , "Niang" , "Niao" , "Nie" , "Nin" , "Ning" ,
"Niu" , "Nong" , "Nu" , "Nv" , "Nuan" , "Nue" , "Nuo" , "O" , "Ou" , "Pa" , "Pai" , "Pan" ,
"Pang" , "Pao" , "Pei" , "Pen" , "Peng" , "Pi" , "Pian" , "Piao" , "Pie" , "Pin" , "Ping" , "Po" ,
"Pu" , "Qi" , "Qia" , "Qian" , "Qiang" , "Qiao" , "Qie" , "Qin" , "Qing" , "Qiong" , "Qiu" , "Qu" ,
"Quan" , "Que" , "Qun" , "Ran" , "Rang" , "Rao" , "Re" , "Ren" , "Reng" , "Ri" , "Rong" , "Rou" ,
"Ru" , "Ruan" , "Rui" , "Run" , "Ruo" , "Sa" , "Sai" , "San" , "Sang" , "Sao" , "Se" , "Sen" ,
"Seng" , "Sha" , "Shai" , "Shan" , "Shang" , "Shao" , "She" , "Shen" , "Sheng" , "Shi" , "Shou" , "Shu" ,
"Shua" , "Shuai" , "Shuan" , "Shuang" , "Shui" , "Shun" , "Shuo" , "Si" , "Song" , "Sou" , "Su" , "Suan" ,
"Sui" , "Sun" , "Suo" , "Ta" , "Tai" , "Tan" , "Tang" , "Tao" , "Te" , "Teng" , "Ti" , "Tian" ,
"Tiao" , "Tie" , "Ting" , "Tong" , "Tou" , "Tu" , "Tuan" , "Tui" , "Tun" , "Tuo" , "Wa" , "Wai" ,
"Wan" , "Wang" , "Wei" , "Wen" , "Weng" , "Wo" , "Wu" , "Xi" , "Xia" , "Xian" , "Xiang" , "Xiao" ,
"Xie" , "Xin" , "Xing" , "Xiong" , "Xiu" , "Xu" , "Xuan" , "Xue" , "Xun" , "Ya" , "Yan" , "Yang" ,
"Yao" , "Ye" , "Yi" , "Yin" , "Ying" , "Yo" , "Yong" , "You" , "Yu" , "Yuan" , "Yue" , "Yun" ,
"Za" , "Zai" , "Zan" , "Zang" , "Zao" , "Ze" , "Zei" , "Zen" , "Zeng" , "Zha" , "Zhai" , "Zhan" ,
"Zhang" , "Zhao" , "Zhe" , "Zhen" , "Zheng" , "Zhi" , "Zhong" , "Zhou" , "Zhu" , "Zhua" , "Zhuai" , "Zhuan" ,
"Zhuang" , "Zhui" , "Zhun" , "Zhuo" , "Zi" , "Zong" , "Zou" , "Zu" , "Zuan" , "Zui" , "Zun" , "Zuo"
};
4. C#计算代码运行时间
//导入该命名空间
using System.Diagnostice;
Stopwatch watch= new Stopwatch ();
watch.Start();
/*
此处为要计算的运行代码
*/
watch.Stop();
//获取当前实例测量得出的总运行时间（以毫秒为单位）
string time = watch.ElapsedMilliseconds.ToString();
5. C#根据日期获取星期方法
protected void Page_Load( object sender, EventArgs e)
{
int m = System.DateTime.Today.Month;
int y = System.DateTime.Today.Year;
int d = System.DateTime.Today.Day;
int weeks = getWeekDay(y, m, d);
switch (weeks)
{
case 1:
this .TextBox1.Text = "星期一" ;
break ;
case 2:
this .TextBox1.Text = "星期二" ;
break ;
case 3:
this .TextBox1.Text = "星期三" ;
break ;
case 4:
this .TextBox1.Text = "星期四" ;
break ;
case 5:
this .TextBox1.Text = "星期五" ;
break ;
case 6:
this .TextBox1.Text = "星期六" ;
break ;
case 7:
this .TextBox1.Text = "星期日" ;
break ;
}
}
/// <summary>根据日期，获得星期几</summary>
/// <param name="y">年</param>
/// <param name="m">月</param>
/// <param name="d">日</param>
/// <returns>星期几，1代表星期一；7代表星期日</returns>
public static int getWeekDay( int y, int m, int d)
{
if (m == 1) m = 13;
if (m == 2) m = 14;
int week = (d + 2 * m + 3 * (m + 1) / 5 + y + y / 4 - y / 100 + y / 400) % 7 + 1;
return week;
}
6. C#删除文件夹的方法
/// <summary>
/// C# 删除文件夹
/// 用法： DeleteFolder(@"c:\\1");
/// </summary>
/// <param name="dir"></param>
private static void DeleteFolder( string dir)
{
// 循环文件夹里面的内容
foreach ( string f in Directory.GetFileSystemEntries(dir))
{
// 如果是文件存在
if (File.Exists(f))
{
FileInfo fi = new FileInfo(f);
if (fi.Attributes.ToString().IndexOf( "Readonly" ) != 1)
{
fi.Attributes = FileAttributes.Normal;
}
// 直接删除其中的文件
File.Delete(f);
}
else
{
// 如果是文件夹存在
// 递归删除子文件夹
DeleteFolder(f);
}
}
// 删除已空文件夹
Directory.Delete(dir);
}
希望本文所述对大家C#程序设计有所帮助。
dy("nrwz");