Passing Values between the Pages in Asp.net

You can pass values from one page to another using Request.Params collection which returns collection of Form elements, Cookies, Server Variables and QueryString.

Home.aspx page:

private void Submit_Click(object sender, System.EventArgs e)
  {     
   System.Collections.Specialized.NameValueCollection myCol = Request.Params; 

   string userName = Request.Params.Get("tbUserName");
   
   Server.Transfer("Registration.aspx"); 
  }

And the Registration.aspx which will receive the values looks something like this:

private void Page_Load(object sender, System.EventArgs e)
  {
     if(Request.Params.Get("txtUserName") != null) 
     {
       string userName = Request.Params.Get("tbUserName"); 
       Response.Write(userName); 
     }
  } 

Note: Use Server.Transfer for redirecting to the next page otherwise the ControlList 

values of the 1st page will be lost.