Stringbuild,stringformat, "+" "three Methods of speed test

Test method:

Stopwatch SW =NewStopwatch (); SW. Start ();stringTMP =""; StringBuilder SB=NewStringBuilder (); for(inti =0; I <10000; i++){    //tmp + = "|" + i;Sb. Append ("|"); Sb.    Append (i.ToString ()); //tmp = string. Format ("{0}{1}{2}", tmp, "|", i);}SW. Stop (); Console.WriteLine (sb.) ToString ()); Console.WriteLine (SW. Elapsedmilliseconds); Console.read ();

View Code

Create a For loop of 10,000 times, add the number of I and divide it by |

Different types of combinations StringFormat will be slightly faster than + +. But the combination is more slow than the +.

3 parameters , and different types or complex format with stringformat suitable. (A long string is slower than "+")

More than 3 parameters, the same type is more, with +.

More complex considerations Stringbuild

Name	Speed
Stringbuild	2ms
StringFormat	655ms
+ and StringFormat mates	172ms
+	181ms

Note: + and StringFormat mates refer to: tmp + = string. Format ("{0}{1}", "|", I);

Stringbuild,stringformat, "+" "three Methods of speed test