How to remove comma separated value from a string?

Question

I want to remove a comma separated value from the string..

suppose I have a string like this

string x=\"r, v, l, m\"

and i want to

Answer 1

// If you want to remove ALL occurences of the item, say "a" you can use

  String data = "a, b, c, d, a, e, f, q, a";

  StringBuilder Sb = new StringBuilder();

  foreach (String item in data.Split(',')) {
    if (!item.Trim().Equals("a", StringComparison.Ordinal)) {
      if (Sb.Length > 0) 
        Sb.Append(',');

      Sb.Append(item);
    }
  }

  data = Sb.ToString();