【LABVIEW到C#】3》String的操作之Match Pattern Funtion.vi

C#实现如下

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;

namespace DEMO
{
    class Darrenstring
    {
        public class Matchpattern:Darrenstring
        {
            private string text;
            private string pattern;
            private int index;
            public bool ismatch;
            public Matchpattern(string Text, string Pattern)
            {
                text = Text;
                pattern = Pattern;
                Match a = Regex.Match(text,pattern);
                index=a.Index;
                ismatch = a.Success;
            }
            public int Index()
            {
                return index;
            }
            public string Before()
            {
                if (ismatch)
                {
                    return (text.Substring(0, index));
                }
                else return null;
            }
            public string After()
            {
                if (ismatch)
                {
                    return (text.Substring(index + pattern.Length, text.Length - pattern.Length-index));
                }
                else return null;
            }
        }
    }
}

类写好后 我们来做个试验 新建个winform程序

程序部分代码如下：

 private void Confirm_Click(object sender, EventArgs e)
        {
            Darrenstring.Matchpattern A = new Darrenstring.Matchpattern(Source.Text, Terminal.Text);
            //Terminal.Text = Convert.ToString(A.Index());
            before1.Text = A.Before();
            After.Text = A.After();
            IsMatched.Checked = A.ismatch;
        }

运行后结果图如下:

效果不错功能实现

MSDN资料参考

System.String.RegularExpressions命名空间说明         https://msdn.microsoft.com/zh-cn/library/System.Text.RegularExpressions(v=vs.80).aspx

Regex类说明     https://msdn.microsoft.com/zh-cn/library/system.text.regularexpressions.regex(v=vs.80).aspx