How to use Server.Transfer and/or Response.Redirect to submit textBox.text data from one aspx to another aspx?

 http://aspnet101.com/aspnet101/tutorials.aspx?id=20http://aspnet101.com/aspnet101/tutorials.aspx?id=20
As shown in the above website, I coded the following 2 aspx files to submit 2 textboxes in the first aspx (NewsletterSubmit) page,
then transfer those 2 textbox.Text data to the second aspx page (MyNewsletter.aspx).  With Server.Transfer coding,
MyNewsletter.aspx was not saved with the TextBox.text data from the first NewsletterSubmit.aspx.  Therefore, other users can not
view the MyNewsletter.aspx with the updated data.  

Later on I changed Server.Transfer to Response.Redirect.  The ...