protected void Page_Load(object sender, EventArgs e)
        {
            if (HttpContext.Current.User.Identity.Name != "")//si esta logueado
            {
                ncategoria = new NCategoria();
                if (Request.QueryString["Id"] != null) //si esta con parametros
                {
                    if (!IsPostBack)
                    {
                        int i = System.Convert.ToInt32(Request.QueryString["Id"]);
                        DCategoria c = ncategoria.ObtenerCategoria(i);
                        TextBox3.Text = c.Id1.ToString();
                        TextBox1.Text = c.Nombre1;
                        TextBox2.Text = c.Descripcion1;
                        ImageButton2.Visible = true;
                    }
                }
                else {
                    ide.Visible = false;
                }
                
                

            }   
            else
            {
                Redireccion("Login.aspx");
            }
         
        }