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                            我想到了如下方法,即创建一个Timer控件(以下名为timer_singleclick),一旦单击发生,就自动启动Timer的Tick事件(timer_singleclick_Tick(object sender, EventArgs e)),一定时间后,若没有第二次点击发生,则执行单击事件(Operate_DoubleClick()),若在这段时间有双击事件(notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e))发生,则停止Timer,此时单击事件就不会发生了。。 
具体实现代码见下: 
代码如下:
int click = 1; 
private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e) //双击托盘弹出 
{ 
timer_singleclick.Enabled = false; 
Operate_DoubleClick(); 
} 
private void notifyIcon1_MouseClick(object sender, MouseEventArgs e) //单击托盘弹出 
{ 
if (e.Button == MouseButtons.Left) timer_singleclick.Enabled = true; 
} 
private void timer_singleclick_Tick(object sender, EventArgs e) 
{ 
click = click + 1; 
if (click == 5) 
{ 
Operate_Click(); 
timer_singleclick.Enabled = false; 
click = 1; 
} 
} 
private void Operate_DoubleClick() 
{ 
//这里为双击的操作代码 
} 
private void Operate_Click() 
{ 
//这里为单击的操作代码 
}