Replacing bad characters of a String with bad characters

Question

I just wondered what\'s the easiest way to replace a string characters that must be replaced subsequently.

For example:

var str = \"[Hello World]\";         


        

Answer 1

    StringBuilder result = new StringBuilder();

    foreach (Char singleCharacter in str)
    {
        result.Append(singleCharacter.Equals('[') ? "[[]" : singleCharacter.Equals(']') ? "[]]" : singleCharacter.ToString());
    }

    str = result.ToString();