C#超实用代码段合集
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
usingSystem; usingSystem.Collections.Generic; usingSystem.ComponentModel; usingSystem.Data; usingSystem.Drawing; usingSystem.Linq; usingSystem.Text; usingSystem.Windows.Forms; namespacenotifyIconShow { publicpartialclassnotifyIconShow:Form { publicnotifyIconShow() { 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> ///<paramname="sender"></param> ///<paramname="e"></param> privatevoidnotifyIconShow_Load(objectsender,EventArgse) { //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 NotifyIconnotifyicon=newNotifyIcon(); //创建托盘图标对象 Iconico=newIcon("Clock2.ico"); //创建托盘菜单对象 ContextMenunotifyContextMenu=newContextMenu(); #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> ///<paramname="sender"></param> ///<paramname="e"></param> privatevoidnotifyIconShow_SizeChanged(objectsender,EventArgse) { //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> ///<paramname="sender"></param> ///<paramname="e"></param> privatevoidnotifyIcon1_Click(objectsender,EventArgse) { //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
classProgram { staticvoidMain(string[]args) { intn=m(20,15); System.Console.WriteLine("最小公倍数为:"+n.ToString()); System.Console.Read(); } staticintf(inta,intb)//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); } staticintm(inta,intb)//最小公倍数 { returna*b/f(a,b); } }
3.C#汉字转拼音
///<summary> ///把汉字转换成拼音(全拼) ///</summary> ///<paramname="hzString">汉字字符串</param> ///<returns>转换后的拼音(全拼)字符串</returns> publicstaticstringConvertE(stringhzString) { //匹配中文字符 Regexregex=newRegex("^[\u4e00-\u9fa5]$"); byte[]array=newbyte[2]; stringpyString=""; intchrAsc=0; inti1=0; inti2=0; char[]noWChar=hzString.ToCharArray(); for(intj=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(inti=(pyValue.Length-1);i>=0;i--) { if(pyValue[i]<=chrAsc) { pyString+=pyName[i]; break; } } } } } //非中文字符 else { pyString+=noWChar[j].ToString(); } } returnpyString; } privatestaticint[]pyValue=newint[] { -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 }; privatestaticstring[]pyName=newstring[] { "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 usingSystem.Diagnostice; Stopwatchwatch=newStopwatch(); 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) stringtime=watch.ElapsedMilliseconds.ToString();
5.C#根据日期获取星期方法
protectedvoidPage_Load(objectsender,EventArgse) { intm=System.DateTime.Today.Month; inty=System.DateTime.Today.Year; intd=System.DateTime.Today.Day; intweeks=getWeekDay(y,m,d); switch(weeks) { case1: this.TextBox1.Text="星期一"; break; case2: this.TextBox1.Text="星期二"; break; case3: this.TextBox1.Text="星期三"; break; case4: this.TextBox1.Text="星期四"; break; case5: this.TextBox1.Text="星期五"; break; case6: this.TextBox1.Text="星期六"; break; case7: this.TextBox1.Text="星期日"; break; } } ///<summary>根据日期,获得星期几</summary> ///<paramname="y">年</param> ///<paramname="m">月</param> ///<paramname="d">日</param> ///<returns>星期几,1代表星期一;7代表星期日</returns> publicstaticintgetWeekDay(inty,intm,intd) { if(m==1)m=13; if(m==2)m=14; intweek=(d+2*m+3*(m+1)/5+y+y/4-y/100+y/400)%7+1; returnweek; }
6.C#删除文件夹的方法
///<summary> ///C#删除文件夹 ///用法:DeleteFolder(@"c:\\1"); ///</summary> ///<paramname="dir"></param> privatestaticvoidDeleteFolder(stringdir) { //循环文件夹里面的内容 foreach(stringfinDirectory.GetFileSystemEntries(dir)) { //如果是文件存在 if(File.Exists(f)) { FileInfofi=newFileInfo(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。