form1.cs

来自「微软（Microsoft）出版社C井练习文件及解答」· CS 代码 · 共 44 行

#region Using directives

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.IO;
using System.Drawing;
using System.Windows.Forms;

#endregion

namespace UsingStatement
{
    partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void openFile_Click(object sender, System.EventArgs e)
        {
            openFileDialog.ShowDialog();
        }

        private void openFileDialog_FileOk(object sender, System.ComponentModel.CancelEventArgs e)
        {
            string fullPathname = openFileDialog.FileName;
            FileInfo src = new FileInfo(fullPathname);
            filename.Text = src.Name;
            source.Text = "";

            using (TextReader reader = new StreamReader(fullPathname))
            {
                string line;
                while ((line = reader.ReadLine()) != null)
                {
                    source.Text += line + "\n";
                }
            }
        }
    }
}