How to hide /show a total webform.

No No i want to hide or show an aspx page.
I am giving u an example.In this case i am hide/show a button. similarly how will i make visible/hide a aspx page
if (Session["Role"] != null && !string.IsNullOrEmpty(Session["Role"].ToString()))
{
con.Open();
using (SqlCommand comm = new SqlCommand("select [Add] from Role1 where Role_Name=@Role and Pages=@Pages", con))
{
string Role = (string)(Session["Role"]);
// 2. define parameters used in command object
SqlParameter para = null;
para = new SqlParameter();
para.ParameterName = "@Role";
para.Value = Role;
comm.Parameters.Add(para);

//Pass @Pages parameter
para = new SqlParameter();
para.ParameterName = "@Pages";
para.Value = "Checkin";
comm.Parameters.Add(para);
SqlDataReader reade = comm.ExecuteReader();
while (reade.Read())
{
Session["Add"] = Convert.ToString(reade["Add"]);
}
//Button Add = (Button)PreviousPage.FindControl("Button2");
if (Session["Add"].ToString() == "Y")
{
Button2.Visible = true;
}
else
{
Button2.Visible = false;

}
con.Close();

} //con.Open

When the database contain Y in view field then a user who login can view the abc.aspx page. for that i need