Visual c# 2010学习笔记7.doc

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Navigation;using System.Windows.Shapes;namespace Selection / / Interaction logic for Window.xaml / public partial class MainWindow : Window public MainWindow() InitializeComponent(); first.Text = DateTime.Today.ToString(); second.Text = DateTime.Today.ToString(); private void quitClick(object sender, RoutedEventArgs e) this.Close(); private void compareClick(object sender, RoutedEventArgs e) int diff = dateCompare(first.SelectedDate.Value, second.SelectedDate.Value); info.Text = ; show(first = second, diff = 0); show(first != second, diff != 0); show(first second, diff 0); show(first = second, diff second, diff 0); show(first = second, diff = 0);/show方法用于在文本框控件中比较结果 private void show(string exp, bool result) info.Text += exp; info.Text += : + result.ToString(); info.Text += rn; private int dateCompare(DateTime leftHandSide, DateTime rightHandSide) / TO DO /return 42; int result; if (leftHandSide.Year rightHandSide.Year) result = 1; else if (leftHandSide.Month rightHandSide.Month) result = 1; else if (leftHandSide.Day rightHandSide.Day) result = 1; else result = 0; return result; 结果：注：此题可以使用Datetime特殊类型来解决，具体详请查阅MSDN。private void copyClick(object sender, RoutedEventArgs e) target.Text = ;/target：对象 string from = source.Text; for (int i = 0; i !=from.Length; i+) char current = fromi;/from字符串 copyOne(current); private void copyOne(char current) switch (current) case : target.Text+=< break; default: target.Text += current; break; 结果：using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Navigation;using System.Windows.Shapes;using Microsoft.Win32;using System.IO;namespace WhileStatement / / Interaction logic for MainWindow.xaml / public partial class MainWindow : Window private OpenFileDialog openFileDialog = null; public MainWindow() InitializeComponent(); openFileDialog = new OpenFileDialog(); openFileDialog.FileOk += openFileDialogFileOk; private void openFileClick(object sender, RoutedEventArgs e) openFileDialog.ShowDialog(); private void openFileDialogFileOk(object sender, System.ComponentModel.CancelEventArgs e) string fullPathname = openFileDialog.FileName; FileInfo src = new FileInfo(fullPathname); fileName.Text = src.Name; source.Text = ;/属性设置为空，可以清除当前显示的任何文本。 TextReader read