c# - 等待然后在 C# 中执行代码？

Question

好的，我的表格上有一个结束事件。它里面的代码使表单淡出，然后打开另一个表单。有没有办法等到褪色完成？这是我的代码：

    private void form1_closing(object sender, FormClosingEventArgs e)
    {
        if (this.Opacity > 0.01f)
        {
            e.Cancel = true;
            timer1.Interval = 47;
            timer1.Enabled = true;
            timer1.Start();

        }
        else
        {
            timer1.Enabled = false;
        }
    }

    private void timer2_Tick(object sender, EventArgs e)
    {
        progressBar1.Increment(+1);
        label4.Text = progressBar1.Value.ToString() + "%"; 
        if (progressBar1.Value == 100)
        {
            progressBar1.Value = 100; 
            timer2.Stop();
            this.Close();
            Form2 frm2 = new Form2();
            frm2.Show(); 
        }
    }

基本上，form2 很早就打开了，我希望它在淡入淡出效果完成后等待。:)

Answer 1

我猜这个代码应该可以。

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
    {
        for (double i = 1.0; i > 0.0; i-=0.01)
        {
            this.Opacity = i;
            Thread.Sleep(10);
        }

  //Handle whatever you want to do here. The control comes here only when the form is faded out.
    }

Answer 2

代码 ：

void Wait(int Milliseconds)
{
    Stopwatch sw = new Stopwatch();
    sw.Start();
    while(sw.ElapsedMillisecods < Millisecods)
    {
        Application.DoEvents();
    }
    sw.Stop();
}

这是一个Wait函数，如果您可以像这样计算褪色期间花费的总时间，则可以使用它：

Wait(Time)