.net IAsyncResult 异步操作
2020-12-13 02:35
标签：blog class code color c int .net IAsyncResult 异步操作,搜素材,soscw.com .net IAsyncResult 异步操作 标签：blog class code color c int 原文地址：http://www.cnblogs.com/dragon-L/p/3719049.html
//定义一个委托
public
delegate int DoSomething(int
count);
//BeginInvoke 的回调函数
private
static void Execute(IAsyncResult async)
{
DoSomething temp = (DoSomething)async.AsyncState;
int
sum = temp.EndInvoke(async);
Console.WriteLine("线程结束：值为"
+ sum);
}
///
/// 判断输入的整数是不是素数
///
/// 输入的整数
///
public
static bool IsPrime(int
candidate)
{
bool
retVal = true;
//使用递增方式会更有效率，
//但是在演示取消功能时，使用递减的数字会更好。
//for (int i = 2; i
for
(int
i = candidate / 2 + 1; i > 1; i--)
{
if
(candidate % i == 0)
{
retVal = false;
break;
}
}
return
retVal;
}
private
static int maseggs(int
count)
{
int
result = 0;
for
(int
index = 0; index
{
if
(IsPrime(index + 1))
{
result++;
}
}
return
result;
}
static
void Main(string[] args)
{
DoSomething hidands = new
DoSomething(maseggs);
IAsyncResult async = hidands.BeginInvoke(100000, new
AsyncCallback(Execute), hidands);
//这里还有100行代码
Console.WriteLine("消息获取成功");
Console.ReadLine();
}