blocks|key|2877225|text|这个非常简单，不需要你说的委托。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2877226|resultString+=+Regex.Replace(subjectString,+
+++++@"(?im)%5E[{(]?[0-9A-F]{8}[-]?(?:[0-9A-F]{4}[-]?){3}[0-9A-F]{12}[)}]?$",+
+++++"'$0'");|code-block|syntax|javascript|2877227|这与以下样式相匹配，这些样式都是GUID的等效且可接受的格式。|2877228|ca761232ed4211cebacd00aa0057b223
CA761232-ED42-11CE-BACD-00AA0057B223
{CA761232-ED42-11CE-BACD-00AA0057B223}
(CA761232-ED42-11CE-BACD-00AA0057B223)|2877229|更新1|offset|length|style|BOLD|2877230|@NonStatic在评论中指出，上面的正则表达式将匹配具有错误结束分隔符的误报。|2877231|这可以通过广泛支持的正则表达式条件来避免。|2877232|JGsoft引擎、Perl、PCRE、Python和.NET框架都支持条件语句。Ruby从2.0版开始就支持它们。Delphi、PHP和R等具有基于PCRE的regex特性的语言也支持条件。(源http://www.regular-expressions.info/conditional.html)|2877233|后面的正则表达式将匹配|2877234|{123}
(123)
123|2877235|并且将不匹配|2877236|{123)
(123}
{123
(123
123}
123)|2877237|正则表达式：|2877238|%5E({)?($)?\d%2B(?(1)})(?(2)$)$|2877239|解决方案被简化为只匹配数字，以更清晰的方式显示需要的内容。|2877240|entityMap|0|LINK|mutability|MUTABLE|url|http://www.regular-expressions.info/conditional.html^0|0|0|0|0|0|3|0|0|0|2P|1G|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1J|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|1K|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|1L|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|1M|8|@$M|1N|N|1O|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1P|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1R|8|@]|9|@$M|1S|N|1T|1|1U]]|A|$]]|$1|W|3|X|5|6|7|1V|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|D|7|1W|8|@]|9|@]|A|$E|F]]|$1|10|3|11|5|6|7|1X|8|@]|9|@]|A|$]]|$1|12|3|13|5|D|7|1Y|8|@]|9|@]|A|$E|F]]|$1|14|3|15|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|16|3|17|5|D|7|20|8|@]|9|@]|A|$E|F]]|$1|18|3|19|5|6|7|21|8|@]|9|@]|A|$]]|$1|1A|3|-4|5|6|7|22|8|@]|9|@]|A|$]]]|1B|$1C|$5|1D|1E|1F|A|$1G|1H]]]]

This one is quite simple and does not require a delegate as you say.

<pre><code>resultString = Regex.Replace(subjectString, 
 @"(?im)^[{(]?[0-9A-F]{8}[-]?(?:[0-9A-F]{4}[-]?){3}[0-9A-F]{12}[)}]?$", 
 "'$0'");
</code></pre>

This matches the following styles, which are all equivalent and acceptable formats for a GUID.

<pre><code>ca761232ed4211cebacd00aa0057b223
CA761232-ED42-11CE-BACD-00AA0057B223
{CA761232-ED42-11CE-BACD-00AA0057B223}
(CA761232-ED42-11CE-BACD-00AA0057B223)
</code></pre>

Update 1

@NonStatic makes the point in the comments that the above regex will match false positives which have a wrong closing delimiter.

This can be avoided by regex conditionals which are broadly supported.

Conditionals are supported by the JGsoft engine, Perl, PCRE, Python, and the .NET framework. 
Ruby supports them starting with version 2.0. Languages such as Delphi, PHP, and R that 
have regex features based on PCRE also support conditionals. (source <a href="http://www.regular-expressions.info/conditional.html" rel="noreferrer">http://www.regular-expressions.info/conditional.html</a>)

The regex that follows Will match

<pre><code>{123}
(123)
123
</code></pre>

And will not match

<pre><code>{123)
(123}
{123
(123
123}
123)
</code></pre>

Regex:

<pre><code>^({)?($)?\d+(?(1)})(?(2)$)$
</code></pre>

The solutions is simplified to match only numbers to show in a more clear way what is required if needed.

blocks|key|3091247|text|在.NET+Framework4中有增强的System.Guid结构，其中包括解析GUID的新TryParse和TryParseExact方法。这里有一个这样的例子。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3091248|++++//Generate+New+GUID
++++Guid+objGuid+=+Guid.NewGuid();
++++//Take+invalid+guid+format
++++string+strGUID+=+"aaa-a-a-a-a";

++++Guid+newGuid;

++++if+(Guid.TryParse(objGuid.ToString(),+out+newGuid)+==+true)
++++{
++++++++Response.Write(string.Format(" {0}+is+Valid+GUID.",+objGuid.ToString()));
++++}
++++else
++++{
++++++++Response.Write(string.Format(" {0}+is+InValid+GUID.",+objGuid.ToString()));
++++}


++++Guid+newTmpGuid;

++++if+(Guid.TryParse(strGUID,+out+newTmpGuid)+==+true)
++++{
++++++++Response.Write(string.Format(" {0}+is+Valid+GUID.",+strGUID));
++++}
++++else
++++{
++++++++Response.Write(string.Format(" {0}+is+InValid+GUID.",+strGUID));
++++}|code-block|syntax|javascript|3091249|在本例中，我们创建了一个新的guid对象，并获取了一个具有无效guid的字符串变量。之后，我们使用TryParse方法来验证这两个变量是否具有有效的guid格式。通过运行示例，您可以看到字符串变量没有有效的guid格式，并且它给出了"InValid+guid“的消息。如果字符串变量具有有效的guid，则这将在TryParse方法中返回true。|3091250|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

In .NET Framework 4 there is enhancement System.Guid structure, These includes new TryParse and TryParseExact methods to Parse GUID.
Here is example for this.

<pre><code> //Generate New GUID
 Guid objGuid = Guid.NewGuid();
 //Take invalid guid format
 string strGUID = "aaa-a-a-a-a";

 Guid newGuid;

 if (Guid.TryParse(objGuid.ToString(), out newGuid) == true)
 {
 Response.Write(string.Format("&lt;br/&gt;{0} is Valid GUID.", objGuid.ToString()));
 }
 else
 {
 Response.Write(string.Format("&lt;br/&gt;{0} is InValid GUID.", objGuid.ToString()));
 }


 Guid newTmpGuid;

 if (Guid.TryParse(strGUID, out newTmpGuid) == true)
 {
 Response.Write(string.Format("&lt;br/&gt;{0} is Valid GUID.", strGUID));
 }
 else
 {
 Response.Write(string.Format("&lt;br/&gt;{0} is InValid GUID.", strGUID));
 }
</code></pre>

In this example we create new guid object and also take one string variable which has invalid guid. After that we use TryParse method to validate that both variable has valid guid format or not. By running example you can see that string variable has not valid guid format and it gives message of "InValid guid". If string variable has valid guid than this will return true in TryParse method.

blocks|key|226775|text|您可以使用：http://regexhero.net/tester/轻松地自动生成C#代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|226776|这是免费的。|226777|下面是我是如何做到的：|226778|​|226779|📷|atomic|226780|226781|然后，网站自动生成.NET代码：|226782|string+strRegex+=+@"\b[A-F0-9]{8}(?:-[A-F0-9]{4}){3}-[A-F0-9]{12}\b";
Regex+myRegex+=+new+Regex(strRegex,+RegexOptions.None);
string+strTargetString+=+@"+++++{CD73FAD2-E226-4715-B6FA-14EDF0764162}.Debug%7Cx64.ActiveCfg+=+++++++++Debug%7Cx64";
string+strReplace+=+@"""$0""";

return+myRegex.Replace(strTargetString,+strReplace);|code-block|syntax|javascript|226783|entityMap|0|LINK|mutability|MUTABLE|url|http://regexhero.net/tester/|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/b2c0c903af43958f252a11f7fdded1e5.png|imageAlt^0|6|S|0|0|0|0|0|0|1|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|18|8|@]|9|@$A|19|B|1A|1|1B]]|C|$]]|$1|D|3|E|5|6|7|1C|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|1D|8|@]|9|@]|C|$]]|$1|H|3|I|5|6|7|1E|8|@]|9|@]|C|$]]|$1|J|3|K|5|L|7|1F|8|@]|9|@$A|1G|B|1H|1|1I]]|C|$]]|$1|M|3|I|5|6|7|1J|8|@]|9|@]|C|$]]|$1|N|3|O|5|6|7|1K|8|@]|9|@]|C|$]]|$1|P|3|Q|5|R|7|1L|8|@]|9|@]|C|$S|T]]|$1|U|3|-4|5|6|7|1M|8|@]|9|@]|C|$]]]|V|$W|$5|X|Y|Z|C|$10|11]]|12|$5|13|Y|14|C|$15|16|17|-4]]]]

You can easily auto-generate the C# code using: <a href="http://regexhero.net/tester/" rel="noreferrer">http://regexhero.net/tester/</a>. 

Its free.

Here is how I did it:

<img src="https://i.stack.imgur.com/pwpoM.png" alt="enter image description here">

The website then auto-generates the .NET code:

<pre><code>string strRegex = @"\b[A-F0-9]{8}(?:-[A-F0-9]{4}){3}-[A-F0-9]{12}\b";
Regex myRegex = new Regex(strRegex, RegexOptions.None);
string strTargetString = @" {CD73FAD2-E226-4715-B6FA-14EDF0764162}.Debug|x64.ActiveCfg = Debug|x64";
string strReplace = @"""$0""";

return myRegex.Replace(strTargetString, strReplace);
</code></pre>

blocks|key|2877359|text|最基本的正则表达式如下：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2877360|(%5E([0-9A-Fa-f]{8}[-][0-9A-Fa-f]{4}[-][0-9A-Fa-f]{4}[-][0-9A-Fa-f]{4}[-][0-9A-Fa-f]{12})$)+|code-block|syntax|javascript|2877361|或者你可以使用paste+it+here。|offset|length|2877362|希望这能节省你的时间。|2877363|entityMap|0|LINK|mutability|MUTABLE|url|https://regex101.com/r/hD8sJ8/3^0|0|0|7|D|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@$I|X|J|Y|1|Z]]|A|$]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

Most basic regex is following:

<pre><code>(^([0-9A-Fa-f]{8}[-][0-9A-Fa-f]{4}[-][0-9A-Fa-f]{4}[-][0-9A-Fa-f]{4}[-][0-9A-Fa-f]{12})$) 
</code></pre>

or you could <a href="https://regex101.com/r/hD8sJ8/3" rel="noreferrer">paste it here</a>.

Hope this saves you some time.

blocks|key|221394|text|为了让C#+.Net从给定文本中查找和替换任何guid查找字符串，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|221395|使用此RegEx：|221396|[({]?[a-fA-F0-9]{8}[-]?([a-fA-F0-9]{4}[-]?){3}[a-fA-F0-9]{12}[})]?|code-block|syntax|javascript|221397|示例C#代码：|221398|var+result+=+Regex.Replace(
++++++source,+
++++++@"[({]?[a-fA-F0-9]{8}[-]?([a-fA-F0-9]{4}[-]?){3}[a-fA-F0-9]{12}[})]?",+
++++++@"${+__UUID}",+
++++++RegexOptions.IgnoreCase
);|221399|当然有效！并且它匹配并替换以下样式，这些样式对于GUID来说都是等效的和可接受的格式。|221400|"aa761232bd4211cfaacd00aa0057b243"+
"AA761232-BD42-11CF-AACD-00AA0057B243"+
"{AA761232-BD42-11CF-AACD-00AA0057B243}"+
"(AA761232-BD42-11CF-AACD-00AA0057B243)"+|221401|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

For C# .Net to find and replace any guid looking string from the given text,

Use this RegEx:

<pre><code>[({]?[a-fA-F0-9]{8}[-]?([a-fA-F0-9]{4}[-]?){3}[a-fA-F0-9]{12}[})]?
</code></pre>

Example C# code:

<pre><code>var result = Regex.Replace(
 source, 
 @"[({]?[a-fA-F0-9]{8}[-]?([a-fA-F0-9]{4}[-]?){3}[a-fA-F0-9]{12}[})]?", 
 @"${ __UUID}", 
 RegexOptions.IgnoreCase
);
</code></pre>

Surely works! And it matches &amp; replaces the following styles, which are all equivalent and acceptable formats for a GUID.

<pre><code>"aa761232bd4211cfaacd00aa0057b243" 
"AA761232-BD42-11CF-AACD-00AA0057B243" 
"{AA761232-BD42-11CF-AACD-00AA0057B243}" 
"(AA761232-BD42-11CF-AACD-00AA0057B243)" 
</code></pre>

blocks|key|226805|text|我使用了一个更简单的正则表达式模式|type|unstyled|depth|inlineStyleRanges|entityRanges|data|226806|%5E[0-9A-Fa-f\-]{36}$|code-block|syntax|javascript|226807|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I use an easier regex pattern

<pre><code>^[0-9A-Fa-f\-]{36}$
</code></pre>

I need to parse through a string and add single quotes around each Guid value. I was thinking I could use a Regex to do this but I'm not exactly a Regex guru. 

Is there a good Regex to use to identify a Guid?

My second question is once I've found a valid regex I'm assuming I would use <code>Regex.Replace(String, String, MatchEvaluator)</code> but I'm not quite sure of the syntax. Maybe something like:

<pre><code>return Regex.Replace(stringToFindMatch, GuidRegex, match =&gt;
{
 return string.Format("'{0}'", match.Groups[0].ToString());
});
</code></pre>

A string that I'm trying to parse may look like this:

<blockquote>
 "SELECT
 passwordco0_.PASSWORD_CONFIG_ID as PASSWORD1_46_0_,
 FROM
 PASSWORD_CONFIG passwordco0_ 
 WHERE
 passwordco0_.PASSWORD_CONFIG_ID=baf04077-a3c0-454b-ac6f-9fec00b8e170;
 @p0 = baf04077-a3c0-454b-ac6f-9fec00b8e170 [Type: Guid (0)]"
</blockquote>

C# Regex for Guid

Python

Perl

我需要解析一个字符串，并在每个Guid值两边添加单引号。我在想我可以使用Regex来做这件事，但我并不是Regex专家。有没有好的正则表达式可以用来识别Guid？我的第二个问题是，一旦我找到了一个有效的正则表达式，我假设我会使用Regex.Replace(String, String, MatchEvaluator)，...

问C# Regex指南
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