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C# 判断字符串第一位是否为数字或中文的代码
来源: 互联网 发布时间:2014-08-30
本文导语: 代码如下: 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; namespace WindowsFormsApplication1 { public pa...
代码如下:
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; namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } //button事件 //by http://www. private void button1_Click(object sender, EventArgs e) { Regex regChina = new Regex( "^[^x00-xFF]"); Regex regNum = new Regex( "^[0-9]"); Regex regChar = new Regex( "^[a-z]"); Regex regDChar = new Regex( "^[A-Z]"); string str = "Jb脚本"; if (regNum.IsMatch(str)) { MessageBox.Show( "是数字"); } else if (regChina.IsMatch(str)) { MessageBox.Show( "是中文"); } else if (regChar.IsMatch(str)) { MessageBox.Show( "小写"); } else if (regDChar.IsMatch(str)) { MessageBox.Show( "大写"); } } } }