public ActionResult Edit(int?id, ProductsViewModel model)
{
var validImageTypes = new string[]
{
"image/gif",
"image/jpeg",
"image/pjpeg",
"image/png"
};
if (model.ImageUpload != null && !validImageTypes.Contains(model.ImageUpload.ContentType))
{
ModelState.AddModelError("ImageUpload", "請選擇 GIF, JPG or PNG 圖片檔案格式。");
}
if (ModelState.IsValid)
{
var product = db.Products.Find(id);
if (product == null)
{
return(new HttpNotFoundResult());
}
product.Name = model.Name;
product.Description = model.Description;
product.Category_Id = model.Category_Id;
product.Price = model.Price;
product.Author = model.Author;
product.Publisher = model.Publisher;
product.PublishDT = Convert.ToDateTime(model.PublishDT);
product.IsPublic = model.IsPublic;
if (model.ImageUpload != null && model.ImageUpload.ContentLength > 0)
{
ImageDeal imageDeal = new ImageDeal();
//上傳圖檔&壓縮圖檔處理
string imageUrl = imageDeal.Upload(model.ImageUpload);
product.PhotoUrl = imageUrl;
//刪除舊檔案&壓縮檔案
var deletePhotoUrl = Server.MapPath(model.PhotoUrl);
imageDeal.Delete(deletePhotoUrl);
}
db.Entry(product).State = System.Data.Entity.EntityState.Modified;
db.SaveChanges();
return(RedirectToAction("Index"));
}
ViewBag.Category_Id = new SelectList(db.Categories, "Id", "Name", model.Category_Id);
return(View(model));
}
public ActionResult DeleteConfirmed(int id)
{
Products products = db.Products.Find(id);
db.Products.Remove(products);
db.SaveChanges();
//刪除舊檔案
//刪除舊檔案&壓縮檔案
var deletePhotoUrl = Server.MapPath(products.PhotoUrl);
ImageDeal imageDeal = new ImageDeal();
imageDeal.Delete(deletePhotoUrl);
return(RedirectToAction("Index"));
}