State Management

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;

using StateManagement;

namespace PersistingObjects
{
	public class Sender : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Button SendBtn;
		protected System.Web.UI.WebControls.TextBox ToBeSent;
	
		private string previouslySentText
		{
			get { return (string)State.get(); }
			set { State.set(value); }
		}

		private void Page_Load(object sender, System.EventArgs e)
		{
			if( ! this.IsPostBack )
			{
				this.ToBeSent.Text = this.previouslySentText;
			}
		}

		public const string URL = "~/Sender.aspx";

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.SendBtn.Click += new System.EventHandler(this.SendBtn_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void SendBtn_Click(object sender, System.EventArgs e)
		{
			this.previouslySentText = this.ToBeSent.Text;
			Addressee.IncomingText = this.ToBeSent.Text;
			this.Response.Redirect(Addressee.URL);
		}

		private object __VIEWSTATE
		{
			get { return State.get(); }
			set { State.set(value); }
		}

		override protected void SavePageStateToPersistenceMedium(object viewState)
		{
			this.__VIEWSTATE = viewState;
		}

		override protected object LoadPageStateFromPersistenceMedium()
		{
			return this.__VIEWSTATE;
		}
	}
}