我要评论parallel.foreach相对于foreach是多线程，并行操作;foreach是单线程品德操作。
static void main(string[] args)
{
console.writeline("hello world!");
list<userinfo> lst = new list<userinfo> { };
userinfo[] array = new userinfo[] {};
for (int i = 1; i <= 10; i++)
{
lst.add(new userinfo { age=new random().next(1,10),id=guid.newguid()});
}
foreach (var item in lst)
{
console.writeline("循环更改前的值："+item.id+","+item.age+","+item.uname);
}
array = lst.toarray();
//注意parallel.foreach 里面传的是数组， maxdegreeofparallelism = environment.processorcount指的是系统有几个cpu就使用几个cpu
parallelloopresult result = parallel.foreach(array, new paralleloptions { maxdegreeofparallelism = environment.processorcount },item =>
{
item.uname = "张" + item.age;
});
foreach (var item in array)
{
console.writeline("循环更改后的值：" + item.id + "," + item.age + "," + item.uname);
}
console.readkey();
}
public class userinfo
{
public guid id { get; set; }
public int32 age { get; set; }
public string uname { get; set; }
}
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