C#學習6

建一個WPF檔案，給出txt文檔的路徑，將其顯示在textbox中

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 Cambridge{    /// <summary>    /// MainWindow.xaml 的互動邏輯    /// </summary>    public partial class MainWindow : Window    {        private OpenFileDialog openFileDialog = null;        public MainWindow()        {            InitializeComponent();            openFileDialog = new OpenFileDialog();            openFileDialog.FileOk += openFileDialogFileOk;        }        private void Quit_Click(object sender, RoutedEventArgs e)        {            this.Close();        }        private void openFile_Click(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 = "";            TextReader reader = src.OpenText();            string line = reader.ReadLine();            while (line != null)            {                source.Text += line + '\n';                line = reader.ReadLine();            }            reader.Close();        }    }}