C# 正則表達式初級篇

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Text.RegularExpressions;

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

        void Regex_string(string Str_text,string Str_y,string Str_n,string Str_reg)
        {
            if (Regex.IsMatch(Str_text, Str_reg))
            {
                MessageBox.Show(Str_y);
            }
            else
            {
                MessageBox.Show(Str_n);
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Regex_string(textBox1.Text.Trim(), "有漢字", "沒漢字", @"[^\x00-\xff]");
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Regex_string(textBox2.Text.Trim(), "是", "否",