c#全屏

1.新建一个窗口，设置 FormBorderStyle为None，WindowState为Maximized，TopMost为True。然后具体代码如下：

 

AddEventKeyUp(control);
原来的parent.Controls.Clear();

frmFullscreen frm = new frmFullscreen();
frm.Controls.Add(control);

frm.ShowDialog();

　　

        void control_KeyUp(object sender, KeyEventArgs e) {
            if (e.KeyCode == Keys.Escape) {
                if (control != null) {
                   if (frm != null) {
                        frm.Controls.Clear();
                        原来的parent.Controls.Add(control);// 这里不能和下面的Close顺序错了，要不然会引起错误，因为Close后把控件销毁了。
                        frm.Close();
                        frm = null;
                    }
                }
            }
        }

　　例子：

     

        private void 全屏ToolStripMenuItem_Click(object sender, EventArgs e)
        {
          
            this.frm = new FormFillScreen();
            panel2.Controls.Clear();
            frm.Focus();
            frm.Controls.Add(axMapControl1);
            frm.ShowDialog();
            
        }

        private void axMapControl1_OnKeyUp(object sender, IMapControlEvents2_OnKeyUpEvent e)
        {
            if (e.keyCode == 27)
            {

                if (axMapControl1 != null)
                {
                    if (this != null)
                    {
                        frm.Controls.Clear();
                        panel2.Controls.Add(axMapControl1);
                        frm.Close();
                        frm = null;
                    }
                }
            }
        }

　　2.要设置keypreview为true

     3.

//单击进入全屏
private void Button_Click(object sender, RoutedEventArgs e)
{
    this.Topmost = true;
    this.WindowStyle = System.Windows.WindowStyle.None;
    this.WindowState = System.Windows.WindowState.Maximized;
}
//按Esc键退出全屏
private void Grid_PreviewKeyDown(object sender, KeyEventArgs e)
{
    if (e.Key == Key.Escape)//Esc键
    {
        this.WindowState = System.Windows.WindowState.Normal;
        this.WindowStyle = System.Windows.WindowStyle.SingleBorderWindow;
    }
}