>Even better, make it an Extension method to the string class.
>
If you look closer - you'll see that this is the signature of an extension method


>>
>>Can be optimized in that case
>>
>>would be like this
>>

>>public static string ChrTran(this string s, string[]  from, string[] to)
>>

>>
>>Of course - the length of the arrays from and to must be equal
>>
>>It's an extra loop. sb needs to be instantiated only once, and only once sb.ToString();
>>
>>
>>Also, in the oiginal code above from and to are not checked for null values