本文介绍了在 Windows 窗体中调用的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
有人有使用 Invoke 的学习资源的链接吗?
Does anyone have a link to a learning resource for using Invoke?
我正在努力学习,但我看到的所有例子都无法适应我的目的.
I'm trying to learn but all the examples I have seen I have been unable to adapt for my purposes.
推荐答案
您是否尝试过 MSDN 控制.调用
Did you try MSDN Control.Invoke
我刚刚编写了一个小 WinForm 应用程序来演示 Control.Invoke.创建表单后,在后台线程上开始一些工作.完成该工作后,更新标签中的状态.
I just wrote a little WinForm application to demonstrate Control.Invoke.When the form is created, Start some work on background thread. After that work is done, Update the status in a label.
public Form1()
{
InitializeComponent();
//Do some work on a new thread
Thread backgroundThread = new Thread(BackgroundWork);
backgroundThread.Start();
}
private void BackgroundWork()
{
int counter = 0;
while (counter < 5)
{
counter++;
Thread.Sleep(50);
}
DoWorkOnUI();
}
private void DoWorkOnUI()
{
MethodInvoker methodInvokerDelegate = delegate()
{ label1.Text = "Updated From UI"; };
//This will be true if Current thread is not UI thread.
if (this.InvokeRequired)
this.Invoke(methodInvokerDelegate);
else
methodInvokerDelegate();
}
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