C # Extract the specified character type of content from a string

From a string extracted Chinese, English, numbers

Chinese characters 30Margin Chinese characters 40HorizontalAlignment

Regular Expressions:

. 1      ///  <Summary> 
2      /// letters and numbers
 . 3      ///  </ Summary> 
. 4      public  const  String The lettersAndNumbers = " [A-zA-Z0-9] + " ;
 . 5  
. 6      ///  <Summary> 
7      /// Chinese characters
 . 8      ///  </ Summary> 
. 9      public  const  String ChineseChars = " [\ u4E00- \ u9FA5] + " ;
 10  
. 11      ///  <Summary> 
12 is      /// English characters
 13      ///  < / summary>
14     public const string EnglishChars = "[a-zA-Z]+";

Regex use:

1 string ChineseChars = "[\u4E00-\u9FA5]+";
2 var match = Regex.Match("中文字符30Margin中文字符40HorizontalAlignment", ChineseChars, RegexOptions.IgnoreCase);
3 var result = $"Index:{match.Index},Length:{match.Length}\r\nResult:{match.Value}";

 

Note:

Regex returns only the first match

If you need to get all the matches regular correspondence, you can use Regex.Matches