WINFORM程序如何全屏?

Question

主窗体的FormBorderStyle属性设置为None就行了
即在窗体初始化函数中加入this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;

Answer 1

将窗体的WindowState设置为Maximized
FormBorderStyle设置为None即可

Answer 2

我试验了一下MEELON(桃酥) 的方法,的确是这样.非常方便. :)
不知道其他平台上如何.如果也这样的话,我下面的方法就有些多余了. 你可以自己试验一下.
以前我是这样做的,不是用C#,大体思路是这样.
1)Screen.GetBounds 得到屏幕的范围.
2)全屏的时候,隐藏任务栏,不是全屏的时候,显示.如何隐藏和显示,
按照如下步骤可以实现:  
1.定义API和相应的常量.  
 using  System.Runtime.InteropServices;  
 
                       private  const  int  SWP_HIDEWINDOW  =  0x80;    
                       private  const  int  SWP_SHOWWINDOW  =  0x40;    
 
                       [DllImport(  "user32.dll  ")]  
                       public  static  extern  bool  SetWindowPos(    
                                   int  hWnd,                          //  handle  to  window    
                                   int  hWndInsertAfter,    //  placement-order  handle    
                                   short  X,                                  //  horizontal  position    
                                   short  Y,                                  //  vertical  position    
                                   short  cx,                                //  width    
                                   short  cy,                                //  height    
                                   uint  uFlags                        //  window-positioning  options    
                                   );    
                       [DllImport(  "user32.dll  ")]  
                       public  static  extern  int  FindWindow(    
                                   string  lpClassName,    //  class  name    
                                   string  lpWindowName    //  window  name    
                                   );    
 
2.在button的Click中,填写如下代码:  
                                   int  TaskBarHwnd;    
                                   TaskBarHwnd  =  FindWindow(  "Shell_traywnd  ",    "  ");    
                                   if  (button1.Text    ==    "隐藏  ")    
                                   {    
                                               SetWindowPos(TaskBarHwnd,  0,  0,  0,  0,  0,  SWP_HIDEWINDOW);    
                                               button1.Text  =    "显示  ";  }    
                                   else    
                                   {    
                                               SetWindowPos(TaskBarHwnd,  0,  0,  0,  0,  0,  SWP_SHOWWINDOW);    
                                               button1.Text  =    "隐藏  ";    
                                   }