正则表达式 - 双引号内字符转星号/单词首字母转大写

男娘i 2022-09-17 06:26 22阅读 0赞

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;//引用
    
    namespace WindowsFormsApplication1
    {
        public partial class Form1 : Form
        {
            public Form1()
            {
                InitializeComponent();
            }
    
            private void btnChange_Click(object sender, EventArgs e)
            {
                //首字母大写
                //rtbResult.Text = Regex.Replace(rtbSource.Text, @"\w+", new MatchEvaluator(CapText));
                //双引号内其他字符转星号
                rtbResult.Text = Regex.Replace(rtbSource.Text, "\"[^\"]*\"", new MatchEvaluator(XingHao));
    
            }
    
            //将单词的首字母转为大写（注：此处引用自 http://msdn.microsoft.com/zh-cn/library/cft8645c(v=vs.80).aspx）
            //如：【may i help you】 转为：【May I Help You】
            static string CapText(Match m)
            {
                // Get the matched string.
                string x = m.ToString();
                // If the first char is lower case...
                if (char.IsLower(x[0]))
                {
                    // Capitalize it.
                    return char.ToUpper(x[0]) + x.Substring(1, x.Length - 1);
                }
                return x;
            }
    
            //将双引号中的字符转为星号* 
            //如：【"what" can "i" do for you"】 转为：【"****" can "*" do for you"】
            static string XingHao(Match m)   //本人仍觉此算法略显粗糙，有较好算法者望指教一二
            {
                StringBuilder strBld = new StringBuilder();
                string x = m.ToString();
    
                for (int i = 0; i < x.Length - 2;i++ )
                {
                    strBld.Append("*");
                }
                
                return x.Substring(0,1) + strBld.ToString() + x.Substring(x.Length-1);
            }
    
        }
    
    }