这篇文章主要介绍“C#字符串怎么提取数值”的相关知识,小编通过实际案例向大家展示操作过程,操作方法简单快捷,实用性强,希望这篇“C#字符串怎么提取数值”文章能帮助大家解决问题。
C#字符串提取数值(带小数点)
string input = "树2草45210.2m2"; if (GetInputUtil.GetString(" 请输入带数值的字符串:", input, out input)) { Regex r = new Regex(@"d*.d*|0.d*[1-9]d*$"); string[] result = new string[] { r.Match(input).Value, r.Replace(input, "") }; for (int i = 0; i < result.Length; i++) { ed.WriteMessage(string.Format(" {0} = {1}", i, result[i])); } ed.WriteMessage(" ---------------------------"); // 0 = 45210.2 // 1 = 树2草m2 }
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 + " 分别为:" + show); } } }
在winform中,只需要添加一个button按钮即可。