WPF全屏

全屏代碼：

 　　　　　　#region 設定全屏
this.WindowState = System.Windows.WindowState.Normal;
this.WindowStyle = System.Windows.WindowStyle.None;
this.ResizeMode = System.Windows.ResizeMode.NoResize;
this.Topmost = true;
this.Left = 0.0;
this.Top = 0.0;
this.Width = System.Windows.SystemParameters.PrimaryScreenWidth;
this.Height = System.Windows.SystemParameters.PrimaryScreenHeight;
 　　　　    #endregion

 

 擴充類：

項目先引用下面dll：

1：System.Windows.Forms;
2：System.Drawing;

public static class ExpendMethod
    {
private static Window _fullWindow;
private static WindowState _windowState;
private static WindowStyle _windowStyle;
private static bool _windowTopMost;
private static ResizeMode _windowResizeMode;
private static Rect _windowRect;

/// <summary>
/// 進入全屏    
/// </summary>
/// <param name="window"></param>
        public static void GoFullscreen(this Window window)
        {
//已經是全屏 
            if (window.IsFullscreen()) return;

//儲存表單資訊       
            _windowState = window.WindowState;
            _windowStyle = window.WindowStyle;
            _windowTopMost = window.Topmost;
            _windowResizeMode = window.ResizeMode;
            _windowRect.X = window.Left;
            _windowRect.Y = window.Top;
            _windowRect.Width = window.Width;
            _windowRect.Height = window.Height;


//變成無邊表單 
            window.WindowState = WindowState.Normal;//假如已經是Maximized，就不能進入全屏，所以這裡先調整狀態 
            window.WindowStyle = WindowStyle.None;
            window.ResizeMode = ResizeMode.NoResize;
            window.Topmost = true;//最大化後總是在最上面 

//擷取視窗控制代碼 
            var handle = new WindowInteropHelper(window).Handle;
//擷取當前顯示器螢幕
            Screen screen = Screen.FromHandle(handle);

//調整視窗最大化,全屏的關鍵代碼就是下面3句 
            window.MaxWidth = screen.Bounds.Width;
            window.MaxHeight = screen.Bounds.Height;
            window.WindowState = WindowState.Maximized;

//解決切換應用程式的問題
            window.Activated += new EventHandler(window_Activated);
            window.Deactivated += new EventHandler(window_Deactivated);
//記住成功最大化的表單 
            _fullWindow = window;
        }

static void window_Deactivated(object sender, EventArgs e)
        {
var window = sender as Window;
            window.Topmost = false;
        }
static void window_Activated(object sender, EventArgs e)
        {
var window = sender as Window;
            window.Topmost = true;
        }

/// <summary>
/// 退出全屏
/// </summary>
/// <param name="window"></param>
        public static void ExitFullscreen(this Window window)
        {
//已經不是全屏無操作 
            if (!window.IsFullscreen()) return;
//恢複視窗先前資訊，這樣就退出了全屏 
            window.Topmost = _windowTopMost;
            window.WindowStyle = _windowStyle;
            window.ResizeMode = ResizeMode.CanResize;//設定為可調整表單大小 
            window.Left = _windowRect.Left;
            window.Width = _windowRect.Width;
            window.Top = _windowRect.Top;
            window.Height = _windowRect.Height;
            window.WindowState = _windowState;//恢複視窗狀態資訊 
            window.ResizeMode = _windowResizeMode;//恢複視窗可調整資訊 
//移除不需要的事件 
            window.Activated -= window_Activated;
            window.Deactivated -= window_Deactivated;
            _fullWindow = null;
        }

/// <summary>
/// 表單是否在全屏狀態
/// </summary>
/// <param name="window"></param>
/// <returns></returns>
        public static bool IsFullscreen(this Window window)
        {
if (window == null)
throw new ArgumentNullException("window");
return _fullWindow == window;
        }
    }