protected void Button1_Click(object sender, EventArgs e)
 {
     NCategoria categoria = new NCategoria();
     categoria.Nombre1 = TextBox1.Text;
     categoria.Descripcion1 = TextBox2.Text;
     categoria.Guardar();
 }
        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");
            }
         
        }
        void CargarCategorias()
        {
            ncategoria = new NCategoria();
            List<DCategoria> l = ncategoria.ObtenerCategorias();
            String comilla = "\"";
            String s = "";
            String bg = "fcfcfc";
            foreach (DCategoria element in  l)
            {
                if (bg == "fcfcfc")
                {
                    bg = "eaeaea";
                }
                else
                {
                    bg = "fcfcfc";
                }
                s = s + "<tr> 	<td valign= height="+comilla+"100px "+comilla+"top" + comilla + " bgcolor=" + comilla + bg + comilla + " class=" + comilla + "Bodycelda" + comilla + "><a href=" + comilla + "Categoria.aspx?id="+element.Id1.ToString() + comilla + ">" + element.Nombre1 + "</a></td> 	<td valign=" + comilla + "top" + comilla + " bgcolor=" + comilla + bg + comilla + " class=" + comilla + "Bodycelda" + comilla + ">"+element.Descripcion1+"</td> 	<td valign=" + comilla + "top" + comilla + " bgcolor=" + comilla + bg + comilla + " class=" + comilla + "Bodycelda" + comilla + ">185</td> 	</tr>";

            }
            //nuevo
            s = s + "<tr> 	<td   valign= height=" + comilla + "100px " + comilla + "top" + comilla + " bgcolor=" + comilla + bg + comilla + " class=" + comilla + "Bodycelda" + comilla + "><a href=" + comilla + "#" + comilla + "></a></td> 	<td valign=" + comilla + "top" + comilla + " bgcolor=" + comilla + bg + comilla + " class=" + comilla + "Bodycelda" + comilla + "></td> 	<td  align=" + comilla + "right" + comilla + " valign=" + comilla + "top" + comilla + " bgcolor=" + comilla + bg + comilla + " class=" + comilla + "Bodycelda" + comilla + "><a href="+comilla+"Categoria.aspx"+comilla+"><IMG SRC = " + comilla + "../images/NUEVO.png" + comilla + "></a></td> 	</tr>";
            Categorias.Text = s;
        }