protected void Confirm_Click(object sender, EventArgs e)
 {
     if (formtype == 1)
     {
         if (TextBox1.Text != "")
         {
             categoriaBusiness.create(TextBox1.Text);
             Response.Redirect("Categorias.aspx");
         }
     }
     else if (formtype == 2)
     {
         if (TextBox1.Text != "")
         {
             marcaBusiness.create(TextBox1.Text);
             Response.Redirect("Marcas.aspx");
         }
     }
 }