计时器的WinForms [英] Timer in WinForms

问题描述

我用一个定时器来创建一个启动画面。
我想要做的是使窗体淡入和淡出。我开始与制作形式不透明度0在窗体的构造，并通过在窗体加载方法触发定时器。
现在在我的 Timer_Tick 方法，我一直在，比方说，0.2增加了透明度。
我想我会开始降低不透明度一旦定时打一半的时间，但我无法做到这一点。

I'm using a timer to create a Splash Screen. What I want to do is to make the form fade-in and fade-out. I started with making the form opacity 0 in the form's constructor, and by triggering the timer in the Form load method. Now in my Timer_Tick method, I keep increasing the opacity by, say, 0.2. I figured that I'd start decreasing the opacity once the timer hits half its interval, but I'm unable to do that.

我不是很清楚与定时器是如何工作的，因为它是，但我想实现这样的：

I'm not very clear with how the timer works as it is, but I wanted to implement something like this:

if(Whatever_Timer_Value_Is <= Interval/2)  //Can't achieve this :s
this.Opacity += 2;
else
this.Opacity -=2 ;

So..is有办法在任何时刻，以得到定时器的值？或有任何其他方式做到这一点？
请保持简单。我只是一个业余爱好者。 X（

So..is there a way to get the value of the Timer at any instant? Or is there any other way to do this? Please keep it simple. I'm just an amateur. X(

推荐答案

尝试创建飞溅第二种形式：

Try creating a second form for splash:

Form splash = new Form();

public Form1()
{
    InitializeComponent();
    this.Visible = false;
    splash.Opacity = 0;
    splash.Show();
    _timerShow();
    _timerHide();
    this.Visible = true;
}

private async void _timerShow()
{
    while(splash.opacity!=1)
    {
        await Task.Delay(50);
        splash.opacity +=.01;
    }
}

private async void _timerHide()
{
    while(splash.opacity!=0)
    {
        await Task.Delay(50);
        splash.opacity -=.01;
    }
}

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