/// <summary>更新品牌的LOGO的处理
/// </summary>
/// <returns>更新品牌的LOGO的结果View</returns>
public ActionResult UpdateLogo(int id)
{
HttpPostedFileBase file = Request.Files[0];
if (!file.ContentType.Contains("image") || file.ContentLength > 65535)
{
return(Content("error"));
}
//如果获取该ID的品牌信息失败，返回错误
BrandItem brand = BrandManager.GetBrandByID(id);
if (brand == null)
{
return(Content("error"));
}
//上传的LOGO图片必须是100*50的大小
string mimetype = file.ContentType;
BitmapDecoder decoder = BitmapDecoder.Create(file.InputStream, BitmapCreateOptions.None, BitmapCacheOption.Default);
if (decoder.Frames[0].PixelWidth != 100 || decoder.Frames[0].PixelHeight != 50)
{
return(Content("error - must be 100*50 dimension"));
}
string logo_filename = BrandManager.GetLogoFileName(brand, mimetype);
file.SaveAs(HttpContext.Server.MapPath("~/Images/logo/" + logo_filename));
BrandManager.UpdateBrandItem(null);
return(Content("ok-" + logo_filename));
}