2013 3월 « AuctionPro

c# 숫자 / 문자 추출 Regex

대문자 2글자 추출


using System;
using System.Text.RegularExpressions;

class Program
{
    static void Main()
    {
        // Part 1: the input string.
        string input = "abcABC1234567ㅏㅣ";

        // Part 2: call Regex.Match.
        Match match = Regex.Match(input, @"[A-Z]{2}",
            RegexOptions.IgnoreCase);

        // Part 3: check the Match for Success.
        if (match.Success)
        {
            // Part 4: get the Group value and display it.
            string key = match.Groups[0].Value;
            Console.WriteLine(key);
        }
    }
}

//AB

using System;

using System.Text.RegularExpressions;

class Program

{

static void Main()

{

// Part 1: the input string.

string input = "abcABC1234567ㅏㅣ";

// Part 2: call Regex.Match.

Match match = Regex.Match(input, @"[A-Z]{2}",

RegexOptions.IgnoreCase);

// Part 3: check the Match for Success.

if (match.Success)

{

// Part 4: get the Group value and display it.

string key = match.Groups[0].Value;

Console.WriteLine(key);

}

//AB

다음은 숫자만 추출할때 쓰면 된다. 반드시 숫자가 하나이상 있어야 됨.


using System.Text.RegularExpressions;</code>

string strText = "abc1234567ㅏㅣ"
string strNum = "";
strNum = Regex.Replace(strText, @"\D", "");

using System.Text.RegularExpressions;</code>

string strText = "abc1234567ㅏㅣ"

string strNum = "";

strNum = Regex.Replace(strText, @"\D", "");

=> 1234567 닷넷 정규식에서 \d는 숫자. \D는 숫자가 아닌 문자를 의미


abc…	Letters
123…	Digits
\d	Any Digit
\D	Any Non-digit character
.	Any Character
\.	Period
[abc]	Only a, b, or c
[^abc]	Not a, b, nor c
[a-z]	Characters a to z
[0-9]	Numbers 0 to 9
\w	Any Alphanumeric character
\W	Any Non-alphanumeric character
{m}	m Repetitions
{m,n}	m to n Repetitions
*	Zero or more repetitions
+	One or more repetitions
?	Optional character
\s	Any Whitespace
\S	Any Non-whitespace character
^…$	Starts and ends
(…)	Capture Group
(a(bc))	Capture Sub-group
(.*)	Capture all
(abc|def)	Matches abc or def

abc… Letters

123… Digits

\d Any Digit

\D Any Non-digit character

. Any Character

\. Period

[abc] Only a, b, or c

[^abc] Not a, b, nor c

[a-z] Characters a to z

[0-9] Numbers 0 to 9

\w Any Alphanumeric character

\W Any Non-alphanumeric character

{m} m Repetitions

{m,n} m to n Repetitions

* Zero or more repetitions

+ One or more repetitions

? Optional character

\s Any Whitespace

\S Any Non-whitespace character

^…$ Starts and ends

(…) Capture Group

(a(bc)) Capture Sub-group

(.*) Capture all

(abc|def) Matches abc or def

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