Page Lifecycle ASP.Net Tutorial

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  4. Convert FromBase64String and view state encoding
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs"  Inherits="SimpleViewState" %>



    Untitled Page


    
    

        
        

    


File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class SimpleViewState : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    Label1.Text = "Hello World!";
    }
  protected void Button1_Click(object sender, EventArgs e)
  {
    string viewStateString = "/wEPDwUKLTE2MjY5MTY1NQ9kFgICAw9kFgICAQ8PFgIeBFRleHQFDEhlbGxvIFdvcmxkIWRkZPsbiNOyNAufEt7OvNIbVYcGWHqf";
    
    byte[] stringBytes = Convert.FromBase64String(viewStateString);
    
    string decodedViewState = System.Text.Encoding.ASCII.GetString(stringBytes);
    Label1.Text = decodedViewState;
  }
}