C#字符串提取数值(带小数点)
string input = "树2草45210.2m2"; if (GetInputUtil.GetString("\n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("\n{0} = {1}", i, result[i])); } ed.WriteMessage("\n---------------------------"); // 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 + "\r 分别为:" + show); } } }
在winform中,只需要添加一个button按钮即可。
总结
以上为个人经验,希望能给大家一个参考,也希望大家多多支持寻技术。
版权声明:除特别声明外,本站所有文章皆是本站原创,转载请以超链接形式注明出处!