C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
using System.Text.RegularExpressions;

public class Program
{
	public static void Main()
	{
		var regex = new Regex("!echo (?<chain>.*) and a");
		var message = "!echo a and a";
		regex.Match(message).Groups["chain"].Dump();
	}
}

​x
 
using System;
using System.Text.RegularExpressions;
​
public class Program
{
    public static void Main()
    {
        var regex = new Regex("!echo (?<chain>.*) and a");
        var message = "!echo a and a";
        regex.Match(message).Groups["chain"].Dump();
    }
}

##teamcity[blockOpened name='Tests' timestamp='2025-05-12T21:29:10.596+0000' flowId='1']
##teamcity[testSuiteStarted name='TestClass' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testStarted name='Successful' captureStandardOutput='false' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testStdOut name='Successful' out='Some output' tc:tags='tc:parseServiceMessagesInside' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testFinished name='Successful' duration='1000' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testStarted name='Ignored' captureStandardOutput='false' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testIgnored name='Ignored' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testFinished name='Ignored' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testStarted name='Failed' captureStandardOutput='false' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testFailed name='Failed' message='Some message' details='Details' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testFinished name='Failed' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testStarted name='Image' captureStandardOutput='false' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[publishArtifacts 'c:\LocalResources\Sandbox\af47ff3f-61d6-4257-af04-bd8dc99fee28\TeamCity.png => TestData']
##teamcity[testMetadata testName='Image' type='image' value='TestData/TeamCity.png' name='Team City Logo' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testFinished name='Image' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testStarted name='Value' captureStandardOutput='false' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testMetadata testName='Value' value='1234.56' name='Some Value' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testFinished name='Value' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testStarted name='File' captureStandardOutput='false' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[publishArtifacts 'c:\LocalResources\Sandbox\af47ff3f-61d6-4257-af04-bd8dc99fee28\TeamCity.png => TestData']
##teamcity[testMetadata testName='File' type='artifact' value='TestData/TeamCity.png' name='Team City Logo file' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testFinished name='File' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testStarted name='Link' captureStandardOutput='false' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testMetadata testName='Link' type='link' value='https://www.jetbrains.com/' name='JetBrains' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testFinished name='Link' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[testSuiteFinished name='TestClass' timestamp='2025-05-12T21:29:10.612+0000' flowId='1']
##teamcity[blockClosed name='Tests' timestamp='2025-05-12T21:29:10.620+0000' flowId='1']

Cached Result
Last Run:	12:29:10 am
Compile:	0.204s
Execute:	0.073s
Memory:	593.17kb
CPU:	0.172s

View IL Code