1.
private void Form1_Load(object sender, System.EventArgs e)
for(double d=0.01; d< 1; d+=0.02)
{
System.Threading.Thread.Sleep(1);
Application.DoEvents();
this.Opacity=d;
this.Refresh();
}
2.
private void timer1_Tick(object sender, System.EventArgs e)
{
this.Opacity = WinShow ;
WinShow += 0.1 ;
if(WinShow >=1 )
{
timer1.Dispose ();
}
}
3.用循环或计时器，
frmForm myForm=new frmForm()
frmForm.Opacity=0;
frmForm.show();
for(int i=0;i<100;i++)
{
Application.DoEvents()
frmForm.Opacity=i/100;
}
4.
#region ******** 窗体淡入效果函数 ********
private double WinShow = 0;//用于窗口淡入效果的变量
private void FormShow(System.Windows.Forms.Form Curfrm)
{
Curfrm.Opacity = WinShow ;
WinShow += 0.01;
if(WinShow == 1)
{
Curfrm.timerShow.Stop ();
}
}
#endregion
#region ******** 窗体淡入效果函数调用示例 ********
//实现窗口的淡入效果
private void timerShow_Tick(object sender, System.EventArgs e)
{
//timerShow，这是一个timer控件名称；把timerShow.interval=100就可以了。
FormShow(this);
}
#endregion