C# 中如何獲得螢幕寬度和高度

//1、在螢幕的右下角顯示表單 //這個地區不包括工作列的 Rectangle ScreenArea = System.Windows.Forms.Screen.GetWorkingArea(this);
//這個地區包括工作列，就是螢幕顯示的物理範圍 Rectangle ScreenArea = System.Windows.Forms.Screen.GetBounds(this); int width1 = ScreenArea.Width; //螢幕寬度 
int height1 = ScreenArea.Height; //螢幕高度
this.Location = new System.Drawing.Point(width1 - 表單寬度, height1 - 表單高度);  //指定表單顯示在右下角 //2、在母表單的中間顯示子表單的位置計算 waitForm.Location = new Point((this.Location.X + (this.Width - waitForm.Width) / 2),
                                                (this.Location.Y + (this.Height - waitForm.Height) / 2));