VCS/ProcessText - Sample is best!

開発環境	Microsoft Visual C# 2010 Express (SP1)
実行環境	Microsoft Windows XP Home Edition (SP3)
プロジェクトの種類	Windows フォーム アプリケーション
プロジェクト名	ProcessText

プロパティ

Form1	Text	ProcessText
Panel	(Name)	panel1
	Dock	Top
	Size.Height	23
Button	(Name)	button1
	Text	TrimEnd
TextBox	(Name)	textBox1
	Dock	Fill
	Multiline	True
	ScrollBars	Vertical

Form1.cs

using System;
using System.IO;
using System.Windows.Forms;
 
namespace ProcessText
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            textBox1.Select();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            StringReader sr = new StringReader(textBox1.Text);
            StringWriter sw = new StringWriter();
            while (sr.Peek() > -1)
            {
                string line = sr.ReadLine();
                sw.WriteLine(line.TrimEnd());
            }
            sw.Close();
            sr.Close();
            textBox1.Text = sw.ToString();
            textBox1.Select();
            textBox1.SelectAll();
        }
    }
}