[英]Replacing _x with string.empty using Regex.Replace
I have a string "region_2>0" where I want to replace _2 with string.empty using Regex. 我有一个字符串“ region_2> 0”,我想用Regex将_2替换为string.empty。
My expression is ((_)[^_]*)\\w(?=[\\s=!><])
which in both Regulator and Expresso gives me _2. 我的表达式是
((_)[^_]*)\\w(?=[\\s=!><])
,在Regulator和Expresso中都给了我_2。 However, the code(c#): 但是,代码(c#):
Regex.Match(legacyExpression, "((_)[^_]*)\\w(?=[\\s=!><])").Value
gives me "_2>0", which also causes the replace to be wrong (It returns "region" since removing the whole "_2>0" instead of "_2". The result I want is "region>0". Shouldn't the code and the regex programs give the same results? And how can I get it to work? 给我“ _2> 0”,这也导致替换错误(它返回“ region”,因为删除了整个“ _2> 0”而不是“ _2”。我想要的结果是“ region> 0”。该代码和regex程序给出的结果相同?如何使它工作?
(Note the string is not static, it could be in many different forms, but the rule is I want to replace the last _X in the string with string.empty. (请注意,该字符串不是静态的,可以采用许多不同的形式,但是规则是我想用string.empty替换字符串中的最后一个_X。
Thanks! 谢谢!
I copied your code as is into the new project: 我将您的代码原样复制到新项目中:
static void Main(string[] args)
{
var legacyExpression = "region_2>0";
var rex = Regex.Match(legacyExpression, "((_)[^_]*)\\w(?=[\\s=!><])").Value;
Console.WriteLine(rex);
Console.ReadKey();
}
The output is _2
. 输出为
_2
。
我认为这可能有效
(_\d+)
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