private int UpdateData()
        {
            int PortalId = Convert.ToInt32(ddlPortalList.SelectedValue);
            string SkinType = ddlSkinTypeList.SelectedValue;
            string SkinName = txtSkinName.Text;
            string LastModifiedByUserId = Session["UserId"].ToString();
            
            /*** UPLOAD *************************************************************************************************************/
            string SkinIcon = string.Empty;
            string upload_image_physical_path = Server.MapPath(upload_image_dir);
            HttpPostedFile icon_file = FileInput.PostedFile;            
            if (icon_file.ContentLength > 0)
            {
                ModuleClass module_obj = new ModuleClass();
                module_obj.deleteFile(ViewState["SkinIcon"].ToString(), upload_image_physical_path);

                SkinIcon = module_obj.GetEncodeString(System.IO.Path.GetFileName(icon_file.FileName));
                string savePath = System.IO.Path.Combine(upload_image_physical_path, SkinIcon);
                icon_file.SaveAs(savePath);
            }
            else
            {
                SkinIcon = ViewState["SkinIcon"].ToString();
            }
            /************************************************************************************************************************/

            SkinPackages skin_package_obj = new SkinPackages();
            int i = skin_package_obj.Update(_idx, PortalId, SkinName, SkinType, SkinIcon, LastModifiedByUserId);
            return i;
        }