Fastest way to remove white spaces in string

Question

I\'m trying to fetch multiple email addresses seperated by \",\" within string from database table, but it\'s also returning me whitespaces, and I want to remove the whitesp

Answer 1

There are many diffrent ways, some faster then others:

public static string StripTabsAndNewlines(this string str) {

    //string builder (fast)
    StringBuilder sb = new StringBuilder(str.Length);
    for (int i = 0; i < str.Length; i++) {
        if ( !  Char.IsWhiteSpace(s[i])) {
            sb.Append();
        }
    }
    return sb.tostring();

    //linq (faster ?)
    return new string(str.ToCharArray().Where(c => !Char.IsWhiteSpace(c)).ToArray());

    //regex (slow)
    return Regex.Replace(str, @"\s+", "")

}