在我的 Controller 中,我循环遍历项目并将它们保存到我的数据库中。问题是它保存了第一个项目,但没有保存其他项目。我在循环中的“SaveItem()”行上放置了一个断点,每次都会命中它,但对我来说奇怪的是它只执行第一项的方法。
我做错了什么?
public void SubmitItem(Cart cart, ShippingDetails shippingDetails, ProcessedItems processedItem, string orderID)
{
var cartItems = cart.Lines;
//CartIndexViewModel cartIndex = new CartIndexViewModel();
//var customID = cartIndex.OrderID;
foreach(var item in cartItems)
{
processedItem.OrderID = orderID;
processedItem.ProductID = item.Product.ProductID;
processedItem.Name = item.Product.Name;
processedItem.Description = item.Product.Description;
processedItem.Price = item.Product.Price;
processedItem.Category = item.Product.Category;
processedItem.ImageName = item.Product.ImageName;
processedItem.Image2Name = item.Product.Image2Name;
processedItem.Image3Name = item.Product.Image3Name;
processedItem.BuyerName = shippingDetails.Name;
processedItem.Line1 = shippingDetails.Line1;
processedItem.Line2 = shippingDetails.Line2;
processedItem.Line3 = shippingDetails.Line3;
processedItem.City = shippingDetails.City;
processedItem.State = shippingDetails.State;
processedItem.Zip = shippingDetails.Zip;
processedItem.Country = shippingDetails.Country;
processedItem.Status = "Submitted";
processedItems.SaveItem(processedItem);
}
}
public class EFProcessedItemsRepository : IProcessedItems
{
private EFDbContext context = new EFDbContext();
public IQueryable<ProcessedItems> ProcessedItem
{
get { return context.ProcessedItems; }
}
public void SaveItem(ProcessedItems processedItem)
{
if(processedItem.ProcessedID == 0)
{
try
{
context.ProcessedItems.Add(processedItem);
context.SaveChanges();
}
catch (Exception)
{
throw;
}
}
else
{
context.Entry(processedItem).State = EntityState.Modified;
}
}
public void DeleteItem(ProcessedItems processedItem)
{
context.ProcessedItems.Remove(processedItem);
context.SaveChanges();
}
}
这是已处理项目的类:
public class ProcessedItems
{
[Key]
public int ProcessedID { get; set; }
public string OrderID { get; set; }
public int ProductID { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public decimal Price { get; set; }
public string Category { get; set; }
public string ImageName { get; set; }
public string Image2Name { get; set; }
public string Image3Name { get; set; }
public string Status { get; set; }
//shipping
public string BuyerName { get; set; }
public string Line1 { get; set; }
public string Line2 { get; set; }
public string Line3 { get; set; }
public string City { get; set; }
public string State { get; set; }
public string Zip { get; set; }
public string Country { get; set; }
}
界面:
public interface IProcessedItems
{
IQueryable<ProcessedItems> ProcessedItem { get; }
void SaveItem(ProcessedItems processedItem);
void DeleteItem(ProcessedItems processedItem);
}
最佳答案
尝试在添加所有项目后调用context.SaveChanges(
),我认为它应该一次性将它们全部保留。
另一件事要尝试:
重构您的代码,以便 SaveItem 仅接受一项要保存的内容,添加它并调用 SaveChanges()
在方法外部循环访问购物车商品,并调用该方法一次保存一个商品。
// set orderID, shippingDetails above
foreach(var item in cartItems)
{
ProcessedItems processedItem = new ProcessedItems();
processedItem.OrderID = orderID;
processedItem.ProductID = item.Product.ProductID;
processedItem.Name = item.Product.Name;
processedItem.Description = item.Product.Description;
processedItem.Price = item.Product.Price;
processedItem.Category = item.Product.Category;
processedItem.ImageName = item.Product.ImageName;
processedItem.Image2Name = item.Product.Image2Name;
processedItem.Image3Name = item.Product.Image3Name;
processedItem.BuyerName = shippingDetails.Name;
processedItem.Line1 = shippingDetails.Line1;
processedItem.Line2 = shippingDetails.Line2;
processedItem.Line3 = shippingDetails.Line3;
processedItem.City = shippingDetails.City;
processedItem.State = shippingDetails.State;
processedItem.Zip = shippingDetails.Zip;
processedItem.Country = shippingDetails.Country;
SubmitItem(processedItem);
}
public void SubmitItem(ProcessedItems processedItem)
{
processedItem.Status = "Submitted";
processedItems.SaveItem(processedItem);
}
关于c# - Entity Framework 保存循环中的第一项,但不保存其他项,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11970636/