포커스 없이 윈폼 열기

public partial class Form1 : Form
{    
    protected override bool ShowWithoutActivation
    {
        get
        {
            return true;
        }
    }
}

http://www.devpia.com/MAEUL/Contents/Detail.aspx?BoardID=17&MAEULNO=8&no=112838&ref=112838&page=1