visual c# 2010学习笔记7

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1、usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Windows;usingSystem.Windows.Controls;usingSystem.Windows.Data;usingSystem.Windows.Documents;usingSystem.Windows.Input;usingSystem.Windows.Media;usingSystem.Windows.Media.Im

2、aging;usingSystem.Windows.Navigation;usingSystem.Windows.Shapes;namespaceSelection{///

3、Text=DateTime.Today.ToString();}privatevoidquitClick(objectsender,RoutedEventArgse){this.Close();}privatevoidcompareClick(objectsender,RoutedEventArgse){intdiff=dateCompare(first.SelectedDate.Value,second.SelectedDate.Value);info.Text="";show("first==second",dif

4、f==0);show("first!=second",diff!=0);show("firstsecond",diff>0);show("first>=second",diff>=0);//show方法用于在文本框控件中比较结果}privatevoidshow(stringexp,boolresult){info.Text+=exp;info.Text+=":"+result.ToString();in

5、fo.Text+="r";}privateintdateCompare(DateTimeleftHandSide,DateTimerightHandSide){////TODO//return42;intresult;if(leftHandSide.YearrightHandSide.Year)result=1;elseif(leftHandSide.Month

6、esult=-1;elseif(leftHandSide.Month>rightHandSide.Month)result=1;elseif(leftHandSide.DayrightHandSide.Day)result=1;elseresult=0;returnresult;}}}结果：注：此题可以使用Datetime特殊类型来解决，具体详请查阅MSDN。privatevoidcopyClick(objects

7、ender,RoutedEventArgse){target.Text="";//target：对象stringfrom=source.Text;for(inti=0;i!=from.Length;i++){charcurrent=from[i];//from字符串copyOne(current);}}privatevoidcopyOne(charcurrent){switch(current){case'<':target.Text+="<";break;default:target.Text+=current

8、;break;}结果：usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Windows;usingSystem.Windows.Controls;usingSystem.Windows.Data;usi