正则表达式问题 [英] Issue with regular expression

问题描述

你好，

我在正则表达式匹配中遇到问题...

Hello,

I have an issue in regular expression matching...

string x = "user = 'sa' password='eX65dere' server = 'localhost'";
Regex rx = new Regex("password=\'([a-zA-Z0-9]\\_+)\'");
var r = rx.Match(x);
            if (r.Groups.Count > 0)
            {
                var g1 = r.Groups[0]; 
                label1.Text = g1.ToString();
            }

在执行此操作时，我收到以下错误消息. 解析密码="([[a-zA-Z0-9] \ _ +)''-无法识别的转义序列\ _ .有人可以帮我吗?

谢谢
Sebastian

while executing this, I have got the following error message. parsing "password=''([a-zA-Z0-9]\_+)''" - Unrecognized escape sequence \_. Can anyone help me on this?

Thanks
Sebastian

推荐答案

我已经通过如下更改表达式来解决了这个问题...

I have solved this by changing the expression as follows...

Regex rx = new Regex(@"password='([a-zA-Z0-9\\%^&_*]+)\'");

--------------


我又有一个问题...这是我更新的表达方式...

--------------


again i have another question... Here is my updated expression...

string x = "user = 'sa' password='e X65dere!@#

％^& *()'server ='localhost'"; Regex rx = 新 Regex( @"

%^&*()' server = 'localhost'"; Regex rx = new Regex(@"password=\'([a-zA-Z0-9\\!@#

％^& * |()_'" *-+ {}&.; ../?:〜`\ [\\\\\\] +)\'"); var r = rx.Match(x); 如果(r.Groups.Count > 0 ) { var g1 = r.Groups [ 0 ]; MessageBox.Show(g1.ToString()); }

%^&*|() _'""*-+{}<>,.;/?:~`\[\]\\\\]+)\'"); var r = rx.Match(x); if (r.Groups.Count > 0) { var g1 = r.Groups[0]; MessageBox.Show(g1.ToString()); }

在这种情况下，它会与每个小&大写字母，数字和特殊字符( = 除外).如果密码包含 = ，则表达式失败...请您帮忙?

问候
塞巴斯蒂安

In this case it will match for every small & large cap letters, numbers and special characters except = . If the password contains = the expression fails... can you please help?

Regards
Sebastian

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