net程序设计实验指导

1、实验一 简单程序设计1熟悉visual studio.net的ide界面，练习窗口的浮动、停靠，以及工具栏的定制。2模仿书中的例子，编写“hello”程序。3学会使用帮助系统，在编写程序时使“动态帮助”始终打开，注意观察“动态帮助”窗口中内容的变化。4在“帮助”菜单下选择“对帮助的帮助”，阅读其中的内容，学习帮助的使用。/ this is our first example: c# version hello world!using system;class helloworldpublic static void main()console.writeline(hello world!);实

2、验二 c#.net面向对象程序设计实验1为某公司创建一个类来建立员工的人事记录：包括员工的姓名、性别、工资、到公司的日期、部门以及联系方式等信息。构建该类，并做出适当的测试。2从上面的类中派生出一个类，来记录公司干部的情况。包括职位、提职时间、管理的员工人数及姓名。3编写程序，使得一个大学书店可以用它来记录和确定教科书的零售价。所有计算应该用一个类textbook的实例来完成。这个类应该具有属性title（书名）、author（作者）、cost（批发费用）、quantity（库存量）和price（零售价）。同时假设零售价是批发价的1.25倍。4编写程序相加两个分数，并将它们的和以化简后的分数形

3、式表现出来。程序使用类fraction来存放分数的分子和分母，具有方法reduce来化简结果。using system;namespace testclassapp/ / class1 的摘要说明。/ class class1/ / 应用程序的主入口点。/ stathreadstatic void main(string args)/ todo: 在此处添加代码以启动应用程序/double len = 2.5;double wid = 3.0;double rad = 4.1;rectangle arect = new rectangle();arect.length = len;arect.

4、width = wid;circle acirc = new circle (rad);console.writeline (area of rect is:0,arect.area ();console.writeline (area of circ is:0,acirc.area ();abstract class shape/抽象基类，不可实例化public const double pi=3.14;/常量protected double x, y;/私有，可继承变量public shape()/默认构造函数x=y=0;public shape(double x,double y)/带参

5、数构造函数this.x = x;this.y = y;public abstract double area();/抽象方法，需重载class rectangle: shapepublic rectangle():base()public rectangle(double x, double y): base(x,y)/使用基类构造函数public override double area()/函数重载return (x*y);public double length/属性：矩形长度getreturn x;setif (value0)x = value;public double width/

6、属性：矩形宽度getreturn y;setif (value0)y = value;class ellipse: shapepublic ellipse(double x, double y):base(x,y)/使用基类shape的构造函数public override double area()/函数重载return pi*x*y;class circle: ellipsepublic circle(double r):base(r,0)/使用基类ellipse的构造函数public override double area()/函数重载return pi*x*x;实验三 文本编辑器设计

7、1假设有要排序的20个数存在文件data.txt中。编写程序，打开该文件并将排好序的数重新写回该文件。2重新打开第1题创建的文件，在文件的结尾再添加10个随机数。3参考windows的记事本程序，编写一个简单的文本编辑器程序。using system;using system.drawing;using system.collections;using system.componentmodel;using system.windows.forms;using system.data;namespace editerapp/ / form1 的摘要说明。/ public class form1

8、 : system.windows.forms.formprivate 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.menuitem menuitem4;private system.windows.forms.men

9、uitem menuitem5;private system.windows.forms.menuitem menuitem6;private system.windows.forms.menuitem menuitem7;private system.windows.forms.openfiledialog openfiledialog1;private system.windows.forms.savefiledialog savefiledialog1;private system.windows.forms.richtextbox myrtbox; private system.win

10、dows.forms.statusbar mystatus; private icontainer components;public form1()/ windows 窗体设计器支持所必需的/initializecomponent();/ todo: 在 initializecomponent 调用后添加任何构造函数代码/ / 清理所有正在使用的资源。/ protected override void dispose( bool disposing )if( disposing )if (components != null) components.dispose();base.dispos

11、e( disposing );#region windows form designer generated code/ / 设计器支持所需的方法 - 不要使用代码编辑器修改/ 此方法的内容。/ private void initializecomponent() ponents = new system.componentmodel.container(); this.myrtbox = new system.windows.forms.richtextbox(); this.mystatus = new system.windows.forms.statusbar(); this.main

12、menu1 = new system.windows.forms.mainmenu(ponents); this.menuitem1 = new system.windows.forms.menuitem(); this.menuitem3 = new system.windows.forms.menuitem(); this.menuitem2 = new system.windows.forms.menuitem(); this.menuitem4 = new system.windows.forms.menuitem(); this.menuitem5 = new system.wind

13、ows.forms.menuitem(); this.menuitem6 = new system.windows.forms.menuitem(); this.menuitem7 = new system.windows.forms.menuitem(); this.openfiledialog1 = new system.windows.forms.openfiledialog(); this.savefiledialog1 = new system.windows.forms.savefiledialog(); this.suspendlayout(); / / myrtbox / th

14、is.myrtbox.dock = system.windows.forms.dockstyle.fill; this.myrtbox.location = new system.drawing.point(0, 0); this.myrtbox.name = myrtbox; this.myrtbox.size = new system.drawing.size(292, 273); this.myrtbox.tabindex = 0; this.myrtbox.text = ; / / mystatus / this.mystatus.location = new system.drawi

15、ng.point(0, 251); this.mystatus.name = mystatus; this.mystatus.size = new system.drawing.size(292, 22); this.mystatus.tabindex = 1; this.mystatus.text = 新建文件; / / mainmenu1 / this.mainmenu1.menuitems.addrange(new system.windows.forms.menuitem this.menuitem1, this.menuitem7); / / menuitem1 / this.men

16、uitem1.index = 0; this.menuitem1.menuitems.addrange(new system.windows.forms.menuitem this.menuitem3, this.menuitem2, this.menuitem4, this.menuitem5, this.menuitem6); this.menuitem1.text = 文件（&f）; / / menuitem3 / this.menuitem3.index = 0; this.menuitem3.text = 新建（&n）; this.menuitem3.click += new sys

17、tem.eventhandler(this.menuitem3_click); / / menuitem2 / this.menuitem2.index = 1; this.menuitem2.text = 打开（&o）; this.menuitem2.click += new system.eventhandler(this.menuitem2_click); / / menuitem4 / this.menuitem4.index = 2; this.menuitem4.text = 保存（&s）; this.menuitem4.click += new system.eventhandl

18、er(this.menuitem4_click); / / menuitem5 / this.menuitem5.index = 3; this.menuitem5.text = -; / / menuitem6 / this.menuitem6.index = 4; this.menuitem6.text = 退出（&x）; this.menuitem6.click += new system.eventhandler(this.menuitem6_click); / / menuitem7 / this.menuitem7.index = 1; this.menuitem7.text =

19、关于（&a）; / / openfiledialog1 / this.openfiledialog1.filter = text files(*.txt)|*.txt|rich text format files(*.rtf)|*.rtf|all files(*.*)|*.*; / / savefiledialog1 / this.savefiledialog1.filename = doc1; this.savefiledialog1.filter = text files(*.txt)|*.txt|rich text format files(*.rtf)|*.rtf|all files(

20、*.*)|*.*; / / form1 / this.autoscalebasesize = new system.drawing.size(6, 14); this.clientsize = new system.drawing.size(292, 273); this.controls.add(this.mystatus); this.controls.add(this.myrtbox); this.menu = this.mainmenu1; this.name = form1; this.text = editorapp; this.resumelayout(false);#endre

21、gion/ / 应用程序的主入口点。/ stathreadstatic void main() application.run(new form1();private void checksave()if (myrtbox.text != )if (messagebox.show (是否保存当前文件？,确认 ,messageboxbuttons.okcancel ) = dialogresult.ok )mysavefile();private void mynewfile()checksave(); /检查是否保存当前文件myrtbox.clear ();mystatus.text = 新建

22、文件;private void mysavefile()mystatus.text = 保存文件;if (savefiledialog1.showdialog () = dialogresult.ok )myrtbox.savefile (savefiledialog1.filename );private void myopenfile()checksave(); /检查是否保存当前文件if (openfiledialog1.showdialog () = dialogresult.ok )myrtbox.loadfile (openfiledialog1.filename ,richtex

23、tboxstreamtype.plaintext );mystatus.text = 打开文件;private void myexit()checksave(); /检查是否保存当前文件application.exit ();private void menuitem3_click(object sender, system.eventargs e)mynewfile(); /新建文件private void menuitem2_click(object sender, system.eventargs e)myopenfile();/打开文件private void menuitem4_cl

24、ick(object sender, system.eventargs e)mysavefile();/保存文件private void menuitem6_click(object sender, system.eventargs e)myexit();/退出程序4编写程序，在用户选择了一个目录后，找出该目录及其子目录中所有后缀名为doc的文件。using system;using system.drawing;using system.collections;using system.componentmodel;using system.windows.forms;using syste

25、m.data;using system.io;namespace filemanagerapp/ / form1 的摘要说明。/ public class form1 : system.windows.forms.formprivate system.windows.forms.treeview dirtree;private system.windows.forms.splitter splitter1;private system.windows.forms.listview filelist;private system.windows.forms.mainmenu mainmenu1;

26、private system.windows.forms.menuitem menuitem1;private system.windows.forms.menuitem menuitem2;private system.windows.forms.menuitem menuitem3;private system.windows.forms.menuitem menuitem4;private system.windows.forms.menuitem menuitem5;private system.windows.forms.menuitem menuitem6;private syst

27、em.windows.forms.menuitem menuitem7;/ / 必需的设计器变量。/ private system.componentmodel.container components = null;public form1()/ windows 窗体设计器支持所必需的/initializecomponent();/ todo: 在initializecomponent 调用后添加任何构造函数代码/treenode mycomputernode = new treenode (我的电脑);dirtree.nodes.add (mycomputernode);filelists

28、how(mycomputernode);/初始化listview控件private void filelistshow(treenode adirnode)filelist.clear ();tryif (adirnode.parent = null)foreach (string drvname in directory.getlogicaldrives ()listviewitem aitem = new listviewitem(drvname);filelist.items.add (aitem);elseforeach(string dirname in directory.getd

29、irectories (string)adirnode.tag )listviewitem aitem = new listviewitem(dirname);filelist.items.add (aitem);foreach(string filename in directory.getfiles (string)adirnode.tag )listviewitem aitem = new listviewitem(filename);filelist.items.add (aitem);catchprivate void filelistshow(string adirname)fil

30、elist.clear ();tryforeach(string dirname in directory.getdirectories (adirname )listviewitem aitem = new listviewitem(dirname);filelist.items.add (aitem);foreach(string filename in directory.getfiles (adirname)listviewitem aitem = new listviewitem(filename);filelist.items.add (aitem);catchprivate vo

31、id dirtreeshow( treenode adirnode )tryif (adirnode.nodes.count = 0)if (adirnode.parent = null)foreach (string drvname in directory.getlogicaldrives ()treenode anode = new treenode(drvname);anode.tag = drvname;adirnode.nodes.add (anode);else foreach (string dirname in directory.getdirectories(string)

32、adirnode.tag )treenode anode = new treenode (dirname);anode.tag = dirname;adirnode.nodes.add (anode);catch/ / 清理所有正在使用的资源。/ protected override void dispose( bool disposing )if( disposing )if (components != null) components.dispose();base.dispose( disposing );#region windows form designer generated c

33、ode/ / 设计器支持所需的方法- 不要使用代码编辑器修改/ 此方法的内容。/ private void initializecomponent()this.dirtree = new system.windows.forms.treeview();this.splitter1 = new system.windows.forms.splitter();this.filelist = new system.windows.forms.listview();this.mainmenu1 = new system.windows.forms.mainmenu();this.menuitem1 =

34、 new system.windows.forms.menuitem();this.menuitem6 = 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.menuitem5 = new system.windows.forms.menuitem(

35、);this.menuitem7 = new system.windows.forms.menuitem();this.suspendlayout();/ / dirtree/ this.dirtree.dock = system.windows.forms.dockstyle.left;this.dirtree.imageindex = -1;this.dirtree.name = dirtree;this.dirtree.selectedimageindex = -1;this.dirtree.size = new system.drawing.size(121, 273);this.di

36、rtree.tabindex = 0;this.dirtree.afterselect += new system.windows.forms.treevieweventhandler(this.dirtree_afterselect);/ / splitter1/ this.splitter1.location = new system.drawing.point(121, 0);this.splitter1.name = splitter1;this.splitter1.size = new system.drawing.size(3, 273);this.splitter1.tabind

37、ex = 1;this.splitter1.tabstop = false;/ / filelist/ this.filelist.dock = system.windows.forms.dockstyle.fill;this.filelist.location = new system.drawing.point(124, 0);this.filelist.multiselect = false;this.filelist.name = filelist;this.filelist.size = new system.drawing.size(168, 273);this.filelist.

38、tabindex = 2;this.filelist.view = system.windows.forms.view.list;this.filelist.doubleclick += new system.eventhandler(this.filelist_doubleclick);this.filelist.selectedindexchanged += new system.eventhandler(this.filelist_selectedindexchanged);/ / mainmenu1/ this.mainmenu1.menuitems.addrange(new syst

39、em.windows.forms.menuitem this.menuitem1, this.menuitem2, this.menuitem7);/ / menuitem1/ this.menuitem1.index = 0;this.menuitem1.menuitems.addrange(new system.windows.forms.menuitem this.menuitem6);this.menuitem1.text = 文件(&f);/ / menuitem6/ this.menuitem6.index = 0;this.menuitem6.text = exit;this.m

40、enuitem6.click += new system.eventhandler(this.menuitem6_click);/ / menuitem2/ this.menuitem2.index = 1;this.menuitem2.menuitems.addrange(new system.windows.forms.menuitem this.menuitem3, this.menuitem4, this.menuitem5);this.menuitem2.text = 编辑(&e);/ / menuitem3/ this.menuitem3.index = 0;this.menuit

41、em3.shortcut = system.windows.forms.shortcut.ctrlc;this.menuitem3.text = 复制;this.menuitem3.click += new system.eventhandler(this.menuitem3_click);/ / menuitem4/ this.menuitem4.index = 1;this.menuitem4.shortcut = system.windows.forms.shortcut.ctrlv;this.menuitem4.text = 粘贴;this.menuitem4.click += new

42、 system.eventhandler(this.menuitem4_click);/ / menuitem5/ this.menuitem5.index = 2;this.menuitem5.shortcut = system.windows.forms.shortcut.ctrlx;this.menuitem5.text = 剪切;/ / menuitem7/ this.menuitem7.index = 2;this.menuitem7.text = 关于(&a);/ / form1/ this.autoscalebasesize = new system.drawing.size(6

43、, 14);this.clientsize = new system.drawing.size(292, 273);this.controls.addrange(new system.windows.forms.control this.filelist, this.splitter1, this.dirtree);this.menu = this.mainmenu1;this.name = form1;this.text = filemanagerapp;this.resumelayout(false);#endregion/ / 应用程序的主入口点。/ stathreadstatic void main() application.run(new form1();private void dirtree_afterselect(object sender, system.windows.forms.treevieweventargs e)filelistshow( e.node );dirtreeshow( e.node );private void filelist_doubleclick(object sender, system.eventargs e)foreach (int listindex in filelis