Server.Transfer is used as response.redirect but it give the better and fast result as redirect.
we use server.transfer in our application as step 1:
we take one textbox and one button on home page and write the code on button click as Server.Transfer("Default.aspx"); step 2;
we get the value of textbox of home page by
write this code on default.aspx Page page1 = this.PreviousPage;
TextBox t = (TextBox)page1.FindControl("TextBox1");