C#从字符串中提取所有的数字并获得数字个数（正则表达式）

C#从字符串中提取所有的数字并获得数字个数（正则表达式）

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

namespace 提取数字
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        public static bool IsNumber(string s)
        {

            const string pattern = @"\d^]";
            Regex rx = new Regex(pattern);
            return rx.IsMatch(s);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string str = "ssdwq=1111111]dq=117549847580=11790]";
            string num = "";
            bool ha = false;
            ArrayList fig = new ArrayList();
            for (int i = 0; i < str.Length; i++)
            {
                if (IsNumber(str[i].ToString()))
                {
                    num += str[i];
                    ha = true;
                }
                else
                {
                    if (ha)
                    {
                        fig.Add(long.Parse(num));
                        num = "";
                        ha = false;
                    }
                }
            }
            //显示出来
            string show = "";
            for (int i = 0; i < fig.Count; i++)
            {
                show += fig[i] + ",";
            }
            MessageBox.Show("数据数量：" + fig.Count + "\r 分别为：" + show);
        }
    }
}

在winform中，只需要添加一个button按钮即可。