C# String Remove characters between two characters

Question

For Example i have string Like

"//RemoveFromhere
 <div>
 <p>my name is blawal i want to remove this div </p>
  </div>
//RemoveTohere"

I want to use //RemoveFromhere as starting point from where and //RemoveTohere as ending point in between all character i want to remove

What do you have so far? Please update your question so that it shows your relevant code in a [minimal, complete, and verifiable example](https://stackoverflow.com/help/mcve). — wazz, Sep 10 '21 at 11:24
Maybe this does answer your question : https://stackoverflow.com/questions/51891661/removing-text-between-2-strings — XouDo, Sep 10 '21 at 12:01
Does this answer your question? [Remove HTML tags from string including &nbsp in C#](https://stackoverflow.com/questions/19523913/remove-html-tags-from-string-including-nbsp-in-c-sharp) — Hoshani, Sep 16 '21 at 11:40
Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. — Community, Sep 16 '21 at 12:41

AlanK · Answer 1 · 2021-09-11T00:11:41.477

2

  var sin = "BEFORE//RemoveFromhere"+
    "<div>"+
    "<p>my name is blawal i want to remove this div </p>"+
    "</div>"+
    "//RemoveTohereAFTER";
  const string fromId = "//RemoveFromhere";
  const string toId = "//RemoveTohere";
  var from = sin.IndexOf(fromId) + fromId.Length;
  var to = sin.IndexOf(toId);
  if (from > -1 && to > from)
    Console.WriteLine(sin.Remove(from , to - from));
//OR to exclude the from/to tags
  from = sin.IndexOf(fromId);
  to = sin.IndexOf(toId) + toId.Length;
  Console.WriteLine(sin.Remove(from , to - from));

This gives results BEFORE//RemoveFromhere//RemoveTohereAFTER and BEFOREAFTER

See also a more general (better) option using regular expressions from Cetin Basoz added after this answer was accepted.

edited Sep 11 '21 at 00:11

answered Sep 10 '21 at 11:37

AlanK

1,827
13
16

What if he had more text and maybe another //Remove...//Remove... ? – Cetin Basoz Sep 10 '21 at 12:23
I have only on place where i have "RemoveFromhere" and "RemoveTohere" – blawal sarfraz Sep 10 '21 at 12:32
@blawalsarfraz, it is not a good idea to code for only one instance of it. But anyway it is your code. – Cetin Basoz Sep 10 '21 at 13:21
@CetinBasoz: Nice(r) answer, referenced and upvoted. – AlanK Sep 11 '21 at 00:15

score 0 · Accepted Answer · answered Sep 10 '21 at 12:19

void Main()
{
    string pattern = @"\n{0,1}//RemoveFromhere(.|\n)*?//RemoveTohere\n{0,1}";
    var result = Regex.Replace(sample, pattern, "");
    Console.WriteLine(result);
}

static string sample = @"Here
//RemoveFromhere
 <div>
 <p>my name is blawal i want to remove this div </p>
  </div>
//RemoveTohere
Keep this.
//RemoveFromhere
 <div>
 <p>my name is blawal i want to remove this div </p>
  </div>
//RemoveTohere
Keep this too.
";

C# String Remove characters between two characters

2 Answers2