public async Task <ActionResult> DeleteAddProduct([Bind(Include = "ID,categories")] AddProducts category)
{
var product = db.Products.Include(m => m.Categories).First(m => m.ProductId == category.ID);
if (!ModelState.IsValid)
{
TempData["product"] = product;
return(View(category));
}
foreach (int index in category.categories)
{
product.Categories.Remove(product.Categories.Find(m => m.CategoryID == index));
}
db.Entry(product).State = EntityState.Modified;
await db.SaveChangesAsync();
return(RedirectToAction("Index", "Products"));
}
public async Task <ActionResult> AddProducts([Bind(Include = "ID,categories")] AddProducts category)
{
ViewData["ProductId"] = new SelectList(items: db.Products, dataValueField: "ProductId", dataTextField: "ProductName");
if (!ModelState.IsValid)
{
return(View(category));
}
var categories = (Dictionary <int, Category>)Session["categories"];
var product = await db.Products.FindAsync(category.ID);
if (product.Categories == null)
{
product.Categories = new List <Category>();
}
foreach (int index in category.categories)
{
Category output = null;
categories.TryGetValue(index, out output);
db.Categories.Attach(output);
if (product.Categories.Contains(output) == false)
{
product.Categories.Add(output);
}
}
Session.Remove("products");
Session.Remove("categories");
db.Entry(product).State = EntityState.Modified;
await db.SaveChangesAsync();
return(RedirectToAction("Index"));
}