修改了下上次写过的一篇string类与StringBuilder类性能比较 http://www.ajaxcn.net/archives/499，这次使用Stopwatch类，
使计算的时间更为准确，从结果来看，字符100个string的时候要少于stringbuilder,而1000以上stringbuilder优于string
using System;
using System.Text;
using System.Diagnostics;
namespace Teststringbuider
{
class Program
{
static void Main()
{
int size = 100;
Console.WriteLine();
for (int i = 0; i <= 3; i++)
{
Stopwatch watch1 = new Stopwatch();
watch1.Start();
BuildSB(size);
watch1.Stop();
Stopwatch watch2 = new Stopwatch();
watch2.Start();
BuildString(size);
watch2.Stop();
Console.WriteLine("时间（单位毫秒）创建 StringBuilder " + "对象 有 " + size + " 字符需要的时间: " + watch1.Elapsed);
Console.WriteLine("时间（单位毫秒）创建 String " + "对象有 " + size + " 字符需要的时间: " + watch2.Elapsed);
Console.WriteLine();
size *= 10;
}
}
//创建StringBuilder连接
static void BuildSB(int size)
{
StringBuilder sbObject = new StringBuilder();
for (int i = 0; i <= size; i++)
sbObject.Append("a");
}
//创建string连接
static void BuildString(int size)
{
string stringObject = "";
for (int i = 0; i <= size; i++)
stringObject += "a";
}
}
}
原创文章转载请注明出处：云飞扬IT的blog