Question

我想暂时改变按钮的颜色以显示按钮已被按下。我怎样才能在C＃中实现这一目标？我可以像这样轻松地改变背景颜色：

private void button1_Click(object sender, EventArgs e)
{
    button1.BackColor = Color.Green;    
}

按钮的

，但如何在延迟后恢复这些更改？

Answer 1

private void button1_Click(object sender, EventArgs e)
{
    button1.BackColor = Color.Azure;
    var aTimer = new System.Timers.Timer(2000);
    aTimer.Elapsed += OnTimedEvent;
    aTimer.Enabled = true;
}

private  void OnTimedEvent(Object source, ElapsedEventArgs e)
{
    button1.BackColor =  SystemColors.Control;
}

Answer 2

Color btnBackColor;
Timer timer = new Timer();

private void button1_Click(object sender, EventArgs e)
{
    btnBackColor = button1.backColor;
    button1.BackColor = Color.Green;    
    timer.Enabled = true;
}

private void timer_Tick(object sender, EventArgs e)
{
    button1.BackColor = btnBackColor;
    timer.Enabled=false;
}

并将以下行添加到构造函数中：

    timer.Tick += timer_Tick;
    timer.Elapsed = 2000;

更改控件颜色，并将其更改回原始颜色

2 个答案: