string1 的哪个子串与 string2 匹配

发布于 2024-08-27 15:54:55 字数 518 浏览 6 评论 0原文

有两个字符串。

String str1="Order Number Order Time Trade Number";

String str2="Order Tm"; 然后我想知道 str2 与str1 中的哪个子字符串。

string regex = Regex.Escape(str2.Replace(@"\ ", @"\s*");
bool isColumnNameMatched = Regex.IsMatch(str1, regex, RegexOptions.IgnoreCase);

我使用正则表达式，因为“Order Tm”也将匹配“Order Time”。它给出匹配是否发生的布尔值。

像 str2="Order Tm" 一样，它应该像 str1,Order Time 中那样返回，是发生匹配的子字符串。

原文

There are two strings.

String str1="Order Number Order Time Trade Number";

String str2="Order Tm"; Then I want to know that str2 matches with which substring in the str1.

string regex = Regex.Escape(str2.Replace(@"\ ", @"\s*");
bool isColumnNameMatched = Regex.IsMatch(str1, regex, RegexOptions.IgnoreCase);

I am using regex because "Order Tm" will also matches "Order Time".It gives bool value that matches occurred or not.

Like str2="Order Tm" then it should return like in the str1,Order Time is the substring where matches is occurred.

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假扮的天使 2024-09-03 15:54:55

你的问题很不清楚，你的代码无法编译。
有一些问题：

您将 "\ " 替换为 @"\s*" - 但您应该仅替换 " " 而无需 \
您不能以这种方式使用Regex.Escape()。它将使您的 \ 加倍并导致另一个不起作用的正则表达式。例如，您的 \s* 将变为 \\s*
看来您只想匹配一个单词（这就是您的问题不清楚的地方）。在这种情况下，您应该匹配类似 "Order|Tm"
要获取匹配的单词，您需要分组构造：

示例：

var str1 = "Order Number Order Time Trade Number";
var str2 = "(Order|Tm)";
string regex = str2.Replace( @" ", @"\s*" );
var match = Regex.Match( str1, regex );

match.Success; // results in "true"
match.Value; // results in "Order"

Your question is very unclear and your code does not compile.
There are some problems:

You replace "\ " with @"\s*" - but you should replace just " " without \
You can't use Regex.Escape() this way. It will double your \ and result in another regex which is not working. For instance your \s* will become \\s*
It seems that you want to match only one word (that's where your question is unclear). In this case you should match against something like "Order|Tm"
To get the matched word you need a grouping construct:

Example:

var str1 = "Order Number Order Time Trade Number";
var str2 = "(Order|Tm)";
string regex = str2.Replace( @" ", @"\s*" );
var match = Regex.Match( str1, regex );

match.Success; // results in "true"
match.Value; // results in "Order"

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