winform下:
private void Form1_Load(object sender, EventArgs e)
{
MessageBox.Show("aa");
Thread.Sleep(5000);
MessageBox.Show("bb");
}
会先弹出"aa",5秒后弹出"bb"
private void Form1_Load(object sender, EventArgs e)
{
label1.Text = "aa";
Thread.Sleep(5000);
label2.Text = "bb";
}
会5秒后弹出窗体,label1为"aa",label2为"bb"
为什么会有区别?
private void Form1_Load(object sender, EventArgs e)
{
MessageBox.Show("aa");
Thread.Sleep(5000);
MessageBox.Show("bb");
}
会先弹出"aa",5秒后弹出"bb"
private void Form1_Load(object sender, EventArgs e)
{
label1.Text = "aa";
Thread.Sleep(5000);
label2.Text = "bb";
}
会5秒后弹出窗体,label1为"aa",label2为"bb"
为什么会有区别?
第二种:程序运行后,窗体不显示,5秒过后才会把窗体显示出来,这时label1为aa,label为bb
为什么不是先把窗体显示出来,label1为aa,label2为"",5秒后label2再显示为bb
下面的同理
当你延时的时候2种运行都没有把窗体加载完,你明白了麽?