x01.TextProc: 两三分钟完成的一个小工具

<?xml version="1.0" encoding="utf-8"?>
<Window
    x:Class="TextProc.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Text Proc"
    Height="380"
    Width="500"
    WindowStartupLocation="CenterScreen">
    <StackPanel>
        <ScrollViewer
            Height="300"
            VerticalScrollBarVisibility="Auto">
            <TextBox
                Name="txtContent"
                Margin="5" />
        </ScrollViewer>
        <StackPanel
            Orientation="Horizontal"
            HorizontalAlignment="Right">
            <Button
                Name="btnSelect"
                Content="_Select" />
            <Button
                Name="btnProcess"
                Content="_Process" />
        </StackPanel>
    </StackPanel>
</Window>

/**
 * MainWindow.xaml.cs (c) 2015 by x01
 * ----------------------------------
 */
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;

using Microsoft.Win32;

namespace TextProc
{
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        string _path = null;
        OpenFileDialog _dlg = new OpenFileDialog();
        
        public MainWindow()
        {
            InitializeComponent();
            
            _dlg.Filter = "*.txt|*.txt|*.*|*.*";
            
            btnProcess.Click += delegate { 
                if (string.IsNullOrEmpty(_path)) return;
                var text = File.ReadAllText(_path);
                text = ProcessText(text);
                txtContent.Text = text;
                File.WriteAllText(_path + ".proc", text);
                MessageBox.Show("Process Text Success!");
            };
            
            btnSelect.Click += delegate { 
                _dlg.ShowDialog();
                _path = _dlg.FileName;
                txtContent.Text = File.ReadAllText(_path);
            };
        }
        
        // 主要的文本处理逻辑，换行作分割，只保留数字，可根据实际情况调整。
        private string ProcessText(string text)
        {
            string [] arr = text.Split(‘\n‘);
            List<string> result = new List<string>();
            foreach (var a in arr) {
                char[] cs = a.ToCharArray();
                string s = string.Empty;
                for (int i = 0; i < cs.Length; i++) {
                    if (cs[i] < ‘0‘ || cs[i] > ‘9‘) continue;
                    s += cs[i].ToString();
                }
                result.Add(s);
            }
            
            string str = string.Empty;
            foreach (var r in result) {
                str += r + "\n";
            }
            return str;
        }
    }
}