C# Linq中的排序代码说明

usingSystem;
usingSystem.Collections.Generic;
usingSystem.Linq;
usingSystem.Text;
namespaceLinqLearning
{
classProgram
{
privatestaticint[]GenerateLotsOfNumbers(intcount)
{
Randomgenerator=newRandom(0);
int[]result=newint[count];
for(inti=0;i<count;i++)
{
result[i]=generator.Next();
}
returnresult;
}
staticvoidMain(string[]args)
{
int[]numbers=GenerateLotsOfNumbers(12345678);
varqueryResults=fromninnumbers
wheren<1000
orderbyndescending
selectn;
Console.WriteLine(“查询语法排序成果：”);
DateTimestart=DateTime.Now;
foreach(variteminqueryResults)
Console.WriteLine(item);
Console.WriteLine(“耗费时刻：{0}”,DateTime.Now-start);
varqueryResult=numbers.OrderByDescending(n=>n).Where(n=>n<1000);
Console.WriteLine(“办法排序成果（排序字段在前）：”);
start=DateTime.Now;
foreach(variteminqueryResult)
Console.WriteLine(item);
Console.WriteLine(“耗费时刻：{0}”,DateTime.Now-start);
varquery=numbers.Where(n=>n<1000).OrderByDescending(n=>n);
Console.WriteLine(“办法排序成果（排序字段在后）：”);
start=DateTime.Now;
foreach(variteminquery)
Console.WriteLine(item);
Console.WriteLine(“耗费时刻：{0}”,DateTime.Now-start);
Console.ReadKey();
}
}
}