如何使用线程每秒更改窗体的背景颜色？ [英] How Do I Change Background Color Of Forms Every Second Using Threads?

问题描述

如何使用线程每秒更改表单的背景颜色？

how do i change background color of forms every second using threads?

推荐答案

您必须添加计时器控制表单并将Tick间隔设置为1秒。然后在Timer_Tick（）事件中写入背景颜色检查逻辑。这应该可以解决您的问题。如果您需要更多详细信息，请告诉我。

- DD

You have to add a Timer control on your form and set the Tick interval as 1 second. Then write background color check logic inside the Timer_Tick() event. This should solve your problem. Let me know if you need more details.
- DD

您没有：因为您无法访问控件，因此线程不是一个好主意（并且Form是一个Control），除了它们创建的线程：UI线程。如果你尝试，你将得到一个跨线程操作异常 - 或者你将不得不调用UI线程为你做这个，这将执行移动到UI线程，无论如何使你使用线程多余！



使用Timer代替 - Tick事件可以改变表格背景 - 暂时忘记线程。

You don't: threading is not a good idea here as you can't access Controls (and a Form is a Control) except from the thread they were created on: the UI thread. If you try, you will get a Cross Thread Operation Exception - or you will have to Invoke the UI thread to do it for you, which moves the execution onto the UI thread, making you use of threading superfluous anyway!

Use a Timer instead - the Tick event can change the form background - and forget about threading for the moment.

试试这段代码：

Try this code:

int red = 0, green = 0, blue = 0;
private void timer1_Tick(object sender, EventArgs e)
{
    Random rnd = new Random();
    red = rnd.Next(0,256);
    green = rnd.Next(0,256);
    blue = rnd.Next(0,256);
    this.BackColor = Color.FromArgb(red, green, blue);
}

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