我正在创建一个报告系统来检查刀片的状态。我知道下面的代码可行,但它的速度非常慢。我查找了有关运行Ping.SendAsync的信息,看起来很有希望,但它不会在ping上运行状态报告,除非它在处理程序中。问题是,我需要访问函数中的其他对象才能正确更改网页。
protected void RadGridDellBlade_ItemDataBound(object sender, GridItemEventArgs e)
{
if (e.Item.ItemType == GridItemType.Item || e.Item.ItemType == GridItemType.AlternatingItem)
{
thing1 t1 = new thing1();
BladeRunnerDataAccess td = new BladeRunnerDataAccess(t1);
try
{
Image icon = (Image)e.Item.FindControl("Dell_imgIcon");
BladeWorkstation blade = (BladeWorkstation)e.Item.DataItem;
Ping pingSender = new Ping();
PingReply reply = pingSender.Send(blade.IPAddress);
switch (reply.Status)
{
case IPStatus.Success:
icon.ImageUrl = "~/Images/GreenIcon.png";
break;
case IPStatus.TimedOut:
icon.ImageUrl = "~/Images/RedIcon.png";
break;
default:
icon.ImageUrl = "~/Images/GrayIcon.png";
break;
}
Image Dell_osbit = (Image)e.Item.FindControl("Dell_OSbit");
switch (blade.BladeOSID)
{
case 1:
Dell_osbit.ImageUrl = "~/Images/xp.png";
break;
case 2:
Dell_osbit.ImageUrl = "~/Images/32bit.png";
break;
case 3:
Dell_osbit.ImageUrl = "~/Images/64bit.png";
break;
}
}
catch (Exception ex)
{
}
finally
{
t1.Dispose();
}
}
}
此代码可以正常运行,但一次只能运行250个刀片,需要几分钟。有没有办法并行或使用线程,并保持状态检查?我感谢任何帮助!!
答案 0 :(得分:0)
缺乏显示您尝试过的好Minimal, Complete, and Verifiable code example,我无法保证完整而准确的解决方案。但是,您当然可以将较早的基于事件的Ping.SendAsync()
模型与async
/ await
结合使用,并将您的代码转换为相当不错的异步实现。
我从您的方法名称中收集您正在执行此工作,因为每个项目都绑定到容器控件。所以你没有向我们展示完成所有250项的实际循环。我假设以异步方式运行事件处理程序的每次调用就足够了。为此:
protected async void RadGridDellBlade_ItemDataBound(object sender, GridItemEventArgs e)
{
if (e.Item.ItemType == GridItemType.Item || e.Item.ItemType == GridItemType.AlternatingItem)
{
thing1 t1 = new thing1();
BladeRunnerDataAccess td = new BladeRunnerDataAccess(t1);
try
{
Image icon = (Image)e.Item.FindControl("Dell_imgIcon");
BladeWorkstation blade = (BladeWorkstation)e.Item.DataItem;
Ping pingSender = new Ping();
TaskCompletionSource<PingReply> tcs = new TaskCompletionSource<PingReply>();
pingSender.PingCompleted += (s, e2) => tcs.SetResult(e2.Reply);
pingSender.SendAsync(blade.IPAddress, null);
PingReply reply = await tcs.Task;
switch (reply.Status)
{
case IPStatus.Success:
icon.ImageUrl = "~/Images/GreenIcon.png";
break;
case IPStatus.TimedOut:
icon.ImageUrl = "~/Images/RedIcon.png";
break;
default:
icon.ImageUrl = "~/Images/GrayIcon.png";
break;
}
Image Dell_osbit = (Image)e.Item.FindControl("Dell_OSbit");
switch (blade.BladeOSID)
{
case 1:
Dell_osbit.ImageUrl = "~/Images/xp.png";
break;
case 2:
Dell_osbit.ImageUrl = "~/Images/32bit.png";
break;
case 3:
Dell_osbit.ImageUrl = "~/Images/64bit.png";
break;
}
}
catch (Exception ex)
{
}
finally
{
t1.Dispose();
}
}
}
对于引发事件并调用上述处理程序的对象,处理程序将在您到达await tcs.Task;
语句后立即完成其工作(假设ping尚未完成)。 ping完成后,将继续执行该方法,并使用PingReply
的有效值。
当然,在ping完成之前,集合中的每个项目都将具有它开始的任何默认状态。据推测这是可以接受的。如果没有,您将必须创建一些中间状态以在ping正在进行时显示。