var pattern = @"^.+(?<No1>[\d]{5})$";
var input = "abcd2018012200005";
var rgx=new Regex(pattern);
var mat=rgx.Match(input);
if (mat.Success)
{
//Groups不会为null,通过组名取值也不会抛出异常
var val=mat.Groups["No"].Value;
var val2 = mat.Groups["No1"]?.Value;
}
Created
January 22, 2018 09:34
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正则匹配组
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