Fastest way to remove chars from string

Question

I have a string from which I have to remove following char: \'\\r\', \'\\n\', and \'\\t\'. I have tried three different ways of removing these char and benchmarked them so I

Answer 1

I believe you'll get the best possible performance by composing the new string as a char array and only convert it to a string when you're done, like so:

string s = "abc";
int len = s.Length;
char[] s2 = new char[len];
int i2 = 0;
for (int i = 0; i < len; i++)
{
    char c = s[i];
    if (c != '\r' && c != '\n' && c != '\t')
        s2[i2++] = c;
}
return new String(s2, 0, i2);

EDIT: using String(s2, 0, i2) instead of Trim(), per suggestion