C# 폼 FullScreen 전체화면으로 만들기

폼 전체화면으로 만들기.

첫번째 방법

this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
this.WindowState = FormWindowState.Maximized;

두번째 방법

fullScrenn_bounds = Rectangle.Empty;

foreach (var screen in Screen.AllScreens)
{
     fullScrenn_bounds = Rectangle.Union(fullScrenn_bounds, screen.Bounds);
}
this.ClientSize = new Size(fullScrenn_bounds.Width, fullScrenn_bounds.Height);
this.Location = new Point(fullScrenn_bounds.Left, fullScrenn_bounds.Top)

으로 하면 전체화면이 되긴하는데 듀얼모니터에서 제대로 되지 않는다.

StartPosition을 Manual로 바꾸고하니까 전체화면이 됨

  
this.StartPosition = FormStartPosition.Manual;

fullScrenn_bounds = Rectangle.Empty;

foreach (var screen in Screen.AllScreens)
{
       fullScrenn_bounds = Rectangle.Union(fullScrenn_bounds, screen.Bounds);
}
this.ClientSize = new Size(fullScrenn_bounds.Width, fullScrenn_bounds.Height);
 this.Location = new Point(fullScrenn_bounds.Left, fullScrenn_bounds.Top);

테스트용 윈폼_FullScreen.zip