一段Js的正则匹配替换功能、怎样转化为.net后端的代码？

Question

如下代码片、在Js里能实现、但在后台我怎样写都不对呀、大佬带带我。。。

var title = "转入在建申请:项目【蜜蜂巢-厦门13812345678】，申请人：管理员,说明：dsaasddasadsa"
            
var newTitle = title.replace(/(13|14|15|17|18)[0-9]{1}[0-9]{8}/g,function (phoneNum){
    let needHide = phoneNum.substr(3,6)
                
    return phoneNum.replace(needHide,'******')
                
})

console.log(newTitle) 

Answer 1

matches part of a string:

Regex.IsMatch(subjectString, "(13|14|15|17|18)[0-9]{1}[0-9]{8}", RegexOptions.IgnoreCase | RegexOptions.Multiline)

or get the part of a string:

Regex.Match(subjectString, "(13|14|15|17|18)[0-9]{1}[0-9]{8}", RegexOptions.IgnoreCase | RegexOptions.Multiline).Value

maybe your are iterate over all matches in a string:

try {
    var regexObj = new Regex("(13|14|15|17|18)[0-9]{1}[0-9]{8}", RegexOptions.IgnoreCase | RegexOptions.Multiline);
    Match matchResults = regexObj.Match(subjectString);
    while (matchResults.Success) {
        // doing
        matchResults = matchResults.NextMatch();
    } 
} catch (ArgumentException ex) {
    // Syntax error in the regular expression
}