如何使用正則表達式

Question

可能重複找到這個：
What is the best regular expression for validating email addresses?

嗨

我怎樣才能找到正則表達式的郵件？

 
"sdafsad@asdfsa.com" 
"sdaf-sad@asdfsa.com" 
"sdaf-sad@asdfsa.com" 
"sdaf-sad@asdf-sa.com" 
"sdaf_sad@asdf-sa.com" 

此外，我怎麼能找到這個項目：

 
track0; (any track number); 
track50 (any track number); 
Track 0 (any track number); 
Track 10 (any track number); 
Track10 (any track number); 

Answer 1

1）直接從微軟：How to match a pattern by using regular expressions and Visual C#

using System.Text.RegularExpressions; 
Regex emailregex = new Regex("(?<user>[^@]+)@(?<host>.+)"); 
Match m = emailregex.Match(s); 

2）你想驗證與該格式的所有條目或做你只想得到那個「（任何曲目號碼）」的價值？

Answer 2

首先一個，嘗試搜索或使用Regular Expression Library

二，試試這個：

Regex regex = new Regex(@"[^\d]+\d"); 

Answer 3

\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b

上http://www.regular-expressions.info/email.html