private void RemoveBtn(Button btn1)
		{
			if(this.Controls.Contains(btn1))
				this.Controls.Remove(btn1);
		}

		private void SetDockProperity(Button btn1, DockStyle dockStyle)
		{
			btn1.Dock = dockStyle;
		}

		private void DockTop_Click(object sender, System.EventArgs e)
		{
			RemoveBtn(this.button1);
			RemoveBtn(this.button2);
			RemoveBtn(this.button3);
			SetDockProperity(this.button1, System.Windows.Forms.DockStyle.Top); 
			SetDockProperity(this.button2, System.Windows.Forms.DockStyle.Top);
			SetDockProperity(this.button3, System.Windows.Forms.DockStyle.Top);
			this.Controls.Add(this.button3); // 注意順序, 後 Add 的最上面
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
		}

		private void DockBottom_Click(object sender, System.EventArgs e)
		{
			RemoveBtn(this.button1);
			RemoveBtn(this.button2);
			RemoveBtn(this.button3);
			SetDockProperity(this.button1, System.Windows.Forms.DockStyle.Bottom); 
			SetDockProperity(this.button2, System.Windows.Forms.DockStyle.Bottom);
			SetDockProperity(this.button3, System.Windows.Forms.DockStyle.Bottom);
			this.Controls.Add(this.button3);  // 注意順序, 後 Add 的最下面
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
		}


            

            

            
 
   
           

			本篇文章回覆於2005-06-07 10:49