protected void btnSignup_Click(object sender, EventArgs e)
 {
     duplicate = data.CheckDuplicate(txtUserName.Text);
     if (txtUserName.Text != "" && txtPassword.Text != "" && txtFullName.Text != "" && txtEmail.Text != "")
     {
         if (duplicate == 0)
         {
             member = new Member(txtUserName.Text, txtPassword.Text, txtFullName.Text, txtEmail.Text);
             data.createMember(member);
             Session["User"]     = txtUserName.Text;
             userType            = "m";         // is a member
             Session["UserType"] = userType;
             Response.Redirect("ProfilePage.aspx");
         }
         else
         {
             lblError.Text    = "The username already existed.";
             lblError.Visible = true;
         }
     }
     else
     {
         lblError.Text    = "Please Enter all the fields";
         lblError.Visible = true;
     }
 }