[CSharpTips]C#正则表达式

C#正则表达式

1.利用正则表达式提取数字

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string str = @"asde-1.23,asd3.44uthg666ytut+2.55rer0.77#*@";   MatchCollection match = Regex.Matches(str, @"[+-]?\d*[.]?\d+");   foreach (var item in match) {    Console.WriteLine(item.ToString()); }

 

 

2.利用正则表达式判断是否匹配

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string str = @"ABC-1.23,asd3.44uthg666ytut+2.55rer0.77#*@";   var matchResult = Regex.IsMatch(str, @".+");   Console.WriteLine(matchResult);