How to remove a string?

Question

I have an string like this:

string s1 = "abc,tom,--Abc, tyu,--ghh";

This string is dynamic, and I need to remove all substrings starting with "--".
Output for the example string:

s1 = "abc,tom, tyu";

How can I remove these substrings?

You should state how the ends of the substrings are marked. It appears to be with either a comma or end of string, but you should really say that in your question. — Jonathan Leffler
– Jonathan Leffler, Commented Jan 18, 2010 at 6:44

Kobi · Accepted Answer · 2010-01-18 06:24:42Z

5

Try:

Regex.Replace(s1, "--[^,]*,?", "");

This will search the string for blocks that start with --, have some characters that are not commans (spaces or letter), and the comma (optional - there's no comma in the end).

answered Jan 18, 2010 at 6:24

Kobi

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Comments

shahkalpesh · Accepted Answer · 2010-01-18 06:33:52Z

1

~~Look at String.Replace~~

I am sorry, I should have read the question correctly. Regex comes to mind, for your case.

EDIT

LINQ

string s1 = "abc,tom,--Abc, tyu,--ghh";
var s2 = s1
  .Split(',')
  .Where(s => s.StartsWith("--") == false)
  .Aggregate((start, next) => start + "," + next);
Console.WriteLine(s2);

edited Jan 18, 2010 at 6:33

answered Jan 18, 2010 at 6:20

shahkalpesh

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1 Comment

Binoj Antony Over a year ago

String.Replace would not remove the item it would just remove the --

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