线程里如果需要更新多个UI控件，怎么办
Thread thread = new Thread(delegate()
{
Thread.Sleep(50);
img = HttpOper(httpPath);
if (pb.InvokeRequired)
{
pb.Invoke(LoadPic,img);
}
else
{
pb.Invoke(LoadPic);
}
});
thread.Start();
这是一个基本的线程，PB是UI控件，如果我还有其它的控件也需要更新，难道是这样写
Thread thread = new Thread(delegate()
{
Thread.Sleep(50);
img = HttpOper(httpPath);
if (pb.InvokeRequired)
{
pb.Invoke(LoadPic,img);
}
else
{
pb.Invoke(LoadPic);
}
if (pb1.InvokeRequired)
{
pb1.Invoke(LoadPic,img);
}
else
{
pb1.Invoke(LoadPic);
}
if (pb2.InvokeRequired)
{
pb2.Invoke(LoadPic,img);
}
else
{
pb2.Invoke(LoadPic);
}
});
thread.Start();
------解决思路----------------------
你可以认为多个UI控件都属于同一个UI线程。因此，pb1.Invoke，和pb2.Invoke，和form1.Invoke没有本质的区别。
因此可以利用一个通用的函数，来把一个操作(Action)放到UI线程上去执行：
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public void SendAction(Action action)
{
if (this.InvokeRequired)
{
this.Invoke(action);
}
else
{
action();
}
}
void Test()
{
Thread thread = new Thread(delegate()
{
Thread.Sleep(50);
img = HttpOper(httpPath);
this.SendAction(() => { pb1.Image = img; });
this.SendAction(() => { pb2.Image = img; });
});
thread.Start();
}
}
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