using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"[^b]:[^,]*,?";
string substitution = @"";
string input = @"a:ABC,b:SDSD,c:213123#a:SDS,b:UIOU,c:89797#a:TYRQQQW,b:UIOUIOYYO,c:546654 a:DFSS,b:TYRTTN,c:12323#a:HJH,b:YTUUUTYUTYT,c:67890 a:TYY,b:OPIUIU,c:86768";
RegexOptions options = RegexOptions.Multiline;
Regex regex = new Regex(pattern, options);
string result = regex.Replace(input, substitution);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx