protected void Page_Load(object sender, EventArgs e)
        {
            btn_InformSupplier.Enabled = false;
            if (!IsPostBack)
            {
                GridView_supplier.DataSource = StoreBusinessLogic.AllSupplier();
                GridView_supplier.DataBind();
            }
            if (Session["sign"].ToString() == "")
            {
                Response.Redirect("~/LoginNew.aspx");
            }
            Boolean results = empauthentication.ClerkAuthentication(Session["sign"].ToString());

            if (results == false)
            {
                Response.Redirect("~/LoginNew.aspx");
            }
        }
 private void bindgrid()
 {
     GridView_supplier.DataSource = StoreBusinessLogic.AllSupplier();
     GridView_supplier.DataBind();
 }