using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace WebApplication1
{
	/// <summary>
	/// WebForm1 的摘要說明。
	/// </summary>
	public class WebForm1 : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Button ButtonTest;
		protected System.Web.UI.WebControls.Button ButtonAdd;
		protected System.Web.UI.WebControls.Label LabelMess;
		protected System.Web.UI.WebControls.Label Mem;
		protected System.Web.UI.WebControls.Button ButtonRem;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此處放置用戶代碼以初始化頁面
			if(ViewState["Test_Btn_Click"]!=null)
			{
				if(ViewState["Test_Btn_Click"].ToString()=="ON")
					ButtonTest.Click+=new System.EventHandler(this.ButtonTest_Click);
				else
					ButtonTest.Click-=new System.EventHandler(this.ButtonTest_Click);
			}
		}

		#region Web 窗體設計器生成的代碼
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 該調用是 ASP.NET Web 窗體設計器所必需的。
			//
			InitializeComponent();
			//
			

			base.OnInit(e);
		}
		
		/// <summary>
		/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
		/// 此方法的內容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.ButtonAdd.Click += new System.EventHandler(this.ButtonAdd_Click);
			this.ButtonRem.Click += new System.EventHandler(this.ButtonRem_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void ButtonTest_Click(object sender, System.EventArgs e)
		{
			LabelMess.Text+=" OK ";
		}

		private void ButtonAdd_Click(object sender, System.EventArgs e)
		{
			//ButtonTest.Click+=new System.EventHandler(this.ButtonTest_Click);//這種方式不可以
			ViewState["Test_Btn_Click"]="ON";
		}

		private void ButtonRem_Click(object sender, System.EventArgs e)
		{
			//ButtonTest.Click-=new System.EventHandler(this.ButtonTest_Click);//這種方式不可以
			ViewState["Test_Btn_Click"]="OFF";
		}
	}
}