Fastest C# Byte[] to String conversion?

Questions & Answers
1

Hi, I want to convert byte to String to be saved into iCloud Key-Value storage. I have successfully convert the data, but the process is too slow. The data is a ghosting data from several levels which has elements up to 40k. The size of the file is not big, around 100kb. But It could take 2 minutes to finish.

Here is the code I used :

**Byte to String : **

 string ByteArrayToString(byte[] val)
 {
    string b = "";
    int len = val.Length;

    for(int i = 0; i < len; i++) {
       if(i != 0) {
          b += ",";
       }			
       b += val*.ToString();*

}
return b;
}

2

Does the string need to be comma delimited, or just an encoded version of the byte data? I would give Convert.ToBase64String a try. It will have the added benefit of being a smaller string.

You can convert back with Convert.FromBase64String.

3

Look at the answer by patridge. For some reason you are inserting ‘,’ which will require you to modify the algorithms listed. For your scenario you are converting sentances or longer byte.

Lookup by byte (via CodesInChaos)
Text: 10,853.96 (45.8X faster)
Sentence: 0.65 (42.7X faster)

I’d recommend this algorithm.