1             if (!SCREEN_STATE) 2             { 3                 if (System.Windows.Forms.Screen.AllScreens.Count() > 1) 4                 { 5                     System.Windows.Forms.Screen s2 = System.Windows.Forms.Screen.AllScreens[1]; 6                     System.Drawing.Rectangle r2 = s2.WorkingArea; 7                     bigScreen = new BigScreen(); 8  9                     bigScreen.GridMainContent.Children.Clear();10                     TeamDataPage s = new TeamDataPage();11                     bigScreen.GridMainContent.Children.Add(s);12 13                     bigScreen.Top = r2.Top;14                     bigScreen.Left = r2.Left;15                     bigScreen.Width = r2.Width;16                     bigScreen.Height = r2.Height;17                     bigScreen.Show();18                     bigScreen.WindowState = WindowState.Maximized;19                     btn_BigScreen.Content = "    停止显示   ";20                     SCREEN_STATE = true;21                 }22                 else23                 {24                     MessageBox.Show("找不到扩展屏幕!");25                 }26             }27             else28             {29                 btn_BigScreen.Content = "    大屏显示   ";30                 if (bigScreen != null)31                     bigScreen.Close();32 33                 SCREEN_STATE = false;34             }