public JsonResult UploadPictures()
{
if (Request.Files["FileData"] != null && !string.IsNullOrEmpty(Request["GroupID"]))
{
var t = Request.Files["FileData"].InputStream;
string fileName = Request.Files["FileData"].FileName;
string extName = Path.GetExtension(fileName);
Image img = Image.FromStream(t);
ImageFormat imgFormat = ImageHelper.GetImageFormat(extName);
byte[] bt = ImageHelper.ImageToBytes(img, imgFormat);
int height = img.Height;
int width = img.Width;
int limitedHeight = !string.IsNullOrEmpty(Request["ThumbHeight"]) ? Convert.ToInt32(Request["ThumbHeight"]) : 60;
int thumbHeight, thumbWidth;
byte[] btThumb = null;
if (height > limitedHeight)
{
thumbHeight = limitedHeight;
thumbWidth = thumbHeight * width / height;
Image imgThumb = img.GetThumbnailImage(thumbWidth, thumbHeight, null, IntPtr.Zero);
btThumb = ImageHelper.ImageToBytes(imgThumb, imgFormat);
}
else
{
btThumb = bt;
}
if (height > 538)
{
int imgWidth = 538 * width / height;
Image imgThumb = ZoomImage(img, 538, imgWidth);
bt = ImageHelper.ImageToBytes(imgThumb, imgFormat);
}
S_I_NewsImage newsImage = new S_I_NewsImage();
string groupID = Request["GroupID"];
newsImage.ID = Formula.FormulaHelper.CreateGuid();
newsImage.GroupID = Request["GroupID"];
newsImage.PictureName = fileName;
newsImage.PictureEntire = bt;
newsImage.PictureThumb = btThumb;
newsImage.SortIndex = entities.Set <S_I_NewsImage>().Where(c => c.GroupID == groupID).Count();
newsImage.CreateTime = DateTime.Now;
newsImage.CreateUserID = Formula.FormulaHelper.GetUserInfo().UserID;
newsImage.CreateUserName = Formula.FormulaHelper.GetUserInfo().UserName;
entities.Set <S_I_NewsImage>().Add(newsImage);
entities.SaveChanges();
return(Json(new { ID = newsImage.ID, GroupID = newsImage.GroupID, PictureName = newsImage.PictureName, SortIndex = newsImage.SortIndex }));
}
else
{
return(Json(string.Empty));
}
}
public ActionResult GetPicThumb(string groupID, string id, int?width, int?height)
{
S_I_NewsImage newsImage = GetNewsImage(groupID, id);
if (newsImage != null)
{
if (newsImage.PictureThumb != null)
{
return(new ImageActionResult(newsImage.PictureThumb, width, height));
}
}
return(Content(string.Empty));
}
private S_I_NewsImage GetNewsImage(string groupID, string id)
{
S_I_NewsImage model = null;
groupID = groupID == null ? "" : groupID;
if (Formula.Helper.CacheHelper.Get(NewsImagePrefix + groupID) != null)
{
List <S_I_NewsImage> list = (List <S_I_NewsImage>)Formula.Helper.CacheHelper.Get(NewsImagePrefix + groupID);
model = list.Find(t => t.ID == id);
}
else
{
model = entities.Set <S_I_NewsImage>().Find(id);
}
return(model);
}