I want to check if some items are same in a list based on a item present in the list.
List<ProductDetailDTO> productDTOs;
The ProductDetailDTO is -
public class ProductDetailDTO
{
public int ProductId { get; set; }
public string Name { get; set; }
public string Category { get; set; }
public byte[] Image { get; set; }
public string Description { get; set; }
public string Brand { get; set; }
public string GUID { get; set; }
public string VariantName { get; set; }
public string VariantValue { get; set; }
public decimal Price { get; set; }
}
Now, I want to display all VariantName and VariantValue with the same GUIDs together.
How can I achieve this?
try with this
productDTOs.GroupBy(x => x.GUID,(key,item) => new
{
VariantName= item.Select(y=>y.VariantName),
VariantValue = item.Select(y => y.VariantValue),
}).ToList()
Related
public IEnumerable<Parties> GetAll()
{
return database.Parties;
}
Works very well and the output is:
But when I Include another table by foreignkey like this:
public IEnumerable<Parties> GetAll()
{
return database.Parties.Include(i=>i.User);
}
It does not work, it returns first value of the table and nothing else,the output is :
Users.cs :
public partial class Users
{
public Users()
{
Parties = new HashSet<Parties>();
PartyParticipants = new HashSet<PartyParticipants>();
}
public int Id { get; set; }
public string Name { get; set; }
public string Surname { get; set; }
public string Username { get; set; }
public string Email { get; set; }
public string Avatar { get; set; }
public string Biography { get; set; }
public string Password { get; set; }
public virtual ICollection<Parties> Parties { get; set; }
public virtual ICollection<PartyParticipants> PartyParticipants { get; set; }
}
Parties.cs :
public partial class Parties
{
public Parties()
{
Image = new HashSet<Image>();
PartyParticipants = new HashSet<PartyParticipants>();
}
public int Id { get; set; }
public string Name { get; set; }
public DateTime PartyDate { get; set; }
public DateTime CreatedDate { get; set; }
public int ParticipantCount { get; set; }
public int MaxParticipant { get; set; }
public string PartySplash { get; set; }
public string ShortDescription { get; set; }
public string Description { get; set; }
public double Latitude { get; set; }
public double Longitude { get; set; }
public bool EntranceFree { get; set; }
public int? FreeParticipant { get; set; }
public int? FreeParticipantMax { get; set; }
public int UserId { get; set; }
public virtual Users User { get; set; }
public virtual ICollection<Image> Image { get; set; }
public virtual ICollection<PartyParticipants> PartyParticipants { get; set; }
}
As you can see on the 2nd picture it interrupts at first row of the table.
I have added this answer based on Vidmantas's comment. ReferenceLoopHandling should be ignored like this in startup.cs:
services.AddMvc()
.AddJsonOptions(options =>
{
options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
});
I have a table in my view that a model is typed to it. However, now I need to change that model to a ViewModel (so I can Union other models on to it but one step at a time). Currently, I query my model (which works) but now I need to figure out how to convert that IEnumerable to bind it to the ViewModel (in this case, it is searchResultViewModel). I gathered what i would need to loop through each line in the IEnumerable and bind it individually (that is what the foreach loop is, me trying that) but I need to convert it back in to an 'IEnumerable'. How do I bind the IEnumerable to my ViewModel but as an 'IEnumerable'? I cannot find anyone else asking a question like this.
[HttpPost]
public ActionResult SearchResult(SearchOrders searchOrders)
{
var orderList = uni.Orders;
var model = from order in orderList
select order;
if (searchOrders.SearchStartDate.HasValue)
{
model = model.Where(o => o.OrderDate >= searchOrders.SearchStartDate);
}
if (searchOrders.SearchEndDate.HasValue)
{
model = model.Where(o => o.OrderDate <= searchOrders.SearchEndDate);
}
if (searchOrders.SearchAmount.HasValue)
{
model = model.Where(o => o.Total == searchOrders.SearchAmount);
}
var searchResultViewModel = new SearchResultViewModel();
foreach (var record in model)
{
searchResultViewModel.OrderNumber = record.OrderId;
searchResultViewModel.PaymentName = record.PaymentFullName;
searchResultViewModel.OrderDate = record.OrderDate;
searchResultViewModel.Amount = record.Total;
}
return View(model);
}
Here is my SearchOrders Model:
namespace MicrositeInfo.WebUI.Models
{
public class SearchOrders
{
public DateTime? SearchStartDate { get; set; }
public DateTime? SearchEndDate { get; set; }
public decimal? SearchAmount { get; set; }
}
}
and here is my SearchResultViewModel:
namespace MicrositeInfo.WebUI.Models
{
public class SearchResultViewModel
{
public int OrderNumber { get; set; }
public string PaymentName { get; set; }
public DateTime OrderDate { get; set; }
public decimal Amount { get; set; }
}
}
and the model that is being queried is the order model:
namespace MicrositeInfo.Model
{
[Table("Order")]
public class Order
{
public int OrderId { get; set; }
public string SelectedSession { get; set; }
public string StudentCity { get; set; }
public string StudentExtension { get; set; }
public string StudentFullName { get; set; }
public string StudentPhone { get; set; }
public string StudentPin { get; set; }
public string StudentState { get; set; }
public string StudentStreet01 { get; set; }
public string StudentStreet02 { get; set; }
public string StudentUniversityId { get; set; }
public string StudentZip { get; set; }
public string PaymentCity { get; set; }
public string PaymentCreditCardExpiration { get; set; }
public string PaymentCreditCardNumber { get; set; }
public string PaymentCreditCardSecurityCode { get; set; }
[Display(Name="Payment Name")]
public string PaymentFullName { get; set; }
public string PaymentState { get; set; }
public string PaymentStreet01 { get; set; }
public string PaymentStreet02 { get; set; }
public string PaymentZip { get; set; }
[Display(Name = "Package Id")]
[ForeignKey("Product")]
public int ProductId { get; set; }
public virtual Product Product { get; set; }
public decimal Price { get; set; }
public decimal Tax { get; set; }
public decimal Total { get; set; }
[Display(Name = "Order Date")]
public DateTime OrderDate { get; set; }
public string OrderIp { get; set; }
public string StudentEmail { get; set; }
public string PaymentId { get; set; }
public int Status { get; set; }
public string ApprovalCode { get; set; }
public decimal Shipping { get; set; }
public string STCITrackingClassCode { get; set; }
}
}
Lambda Query
I am working with with EF6 MVC5 and set up my listing model to include a virtual ICollection of images. I want to query the listings and include an image with each listing title in my view. I am having trouble writing the lambda query in the controller to send to my view.
Listing Class
public class Listing
{
public int Id { get; set; }
public ApplicationUser User;
[Required]
public string UserId { get; set; }
public Category Category { get; set; }
public int CategoryId { get; set; }public string Title { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string Email { get; set; }
public string Website { get; set; }
public string Phone { get; set; }
public string LocationAddress1 { get; set; }
public string LocationAddress2 { get; set; }
public string LocationCity { get; set; }
public string LocationState { get; set; }
public string LocationZip { get; set; }
public string LocationCountry { get; set; }
public double Latitude { get; set; }
public double Longitude { get; set; }
[DataType(DataType.MultilineText)]
public string Comments { get; set; }
public bool isLEO { get; set; }
public bool isProperty { get; set; }
public string Keywords { get; set; }
public bool isNoShowAddress { get; set; }
public bool isActive { get; set; }
public bool isApproved { get; set; }
public virtual ICollection<Image> Images { get; set; }
public virtual ICollection<Review> Reviews { get; set; }
Image Class
public class Image
{
public int Id { get; set; }
public Listing Listing { get; set; }
public int ListingId { get; set; }
public string ImagePath { get; set; }
public bool isPrimary { get; set; }
public DateTime DateAdded { get; set; }
public bool isHidden { get; set; }
}
When you have nested objects I believe you do something like this:
var listings = dbcontext.Listings.Include("Images").Where(...)
Where include tells EF to fetch nested objects.
It could also be something like this:
var listings = dbcontext.Listings.Include(c=>c.Images).Where(...)
You have to project your query to another type specifically designed for use inside Views (this is often referred to as ViewModel) or you can just project it into an anonymous type, the approach is similar.
The following code assumes you will use an anonymous type:
var listings = dbContext.Listings.Select(l => new {
Id = l.Id,
User = l.User,
//add every property you need to show inside your View
Image = l.Images.FirstOrDefault(i => i.isPrimary)
});
I'm trying to get a sum for items I have within a class. To explain you better, I'm having cart object for which I can calculate the total sum with this method:
public decimal ComputeTotalValue()
{
return itemCollection.Sum(e => e.Item.Price*e.Quantity);
}
The item object in our case is this one:
public class CartItem
{
public RestItem Item { get; set; }
public int Quantity { get; set; }
}
Now the RestItem class has these properties:
public class RestItem
{
public Guid Id { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public int InStockNow { get; set; }
public int Order { get; set; }
public decimal Price { get; set; }
public bool HasImage { get; set; }
public bool HasModifiers { get; set; }
public string PLU { get; set; }
public int CategoryId { get; set; }
public byte[] ImageArray { get; set; }
public IEnumerable<ModifierOption> Modifiers { get; set; }
}
The last property, Modifiers is new property which I included today and this is the content:
public class ModifierOption
{
public string ID { get; set; }
public decimal Price { get; set; }
}
What I want to achieve is when the ComputeTotalValue is called, If there are ModifierOption fields as well, I want to calculate the sum of those fields as well and include the result in the total sum.
You can just add price of modifiers to price of your item, can't you?
public decimal ComputeTotalValue()
{
return itemCollection.Sum(e => (e.Item.Price + e.Item.Modifiers.Sum(m=>m.Price))*e.Quantity);
}
Do it like this:
public class RestItem
{
public Guid Id { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public int InStockNow { get; set; }
public int Order { get; set; }
public decimal Price { get; set; }
public bool HasImage { get; set; }
public bool HasModifiers { get; set; }
public string PLU { get; set; }
public int CategoryId { get; set; }
public byte[] ImageArray { get; set; }
public IEnumerable<ModifierOption> Modifiers { get; set; }
public decimal ComputeTotalPrice() {
return (this.Modifiers?.Sum(x => x.Price) ?? 0) + Price;
}
}
public decimal ComputeTotalPrice(){
return itemCollection?.Sum(x => x.ComputeTotalPrice()) ?? 0;
}
I want to display in datagridview data from List but with All data from dictionary (or list).
I have two classes like below. And now I want to list in DataGridView all MeasureSteps from dictionary, one for one row, with multiplying informations from Board class.
What control help me? Or if I can do this with datagridview, just how?
class Board
{
public string Station { get; set; }
public DateTime TestDate { get; set; }
public string TestProgram { get; set; }
public string TestRevision { get; set; }
public string ArticleNumber { get; set; }
public bool Result { get; set; }
public string SerialNumber { get; set; }
public string Operator { get; set; }
public string BatchNumber { get; set; }
public string TestTime { get; set; }
public string TestObjectRevision { get; set; }
public string TestObjectDescription { get; set; }
public string TestObjectName { get; set; }
public string InstrumentInventoryNumber { get; set; }
public string InstrumentArticleNumber { get; set; }
public string InstrumentName { get; set; }
public Dictionary<string,MeasureStep> Measurements { get; set; }
}
class MeasureStep
{
public string TestFunction { get; set; }
public string Descripton { get; set; }
public double LowerLimit { get; set; }
public double UpperLimit { get; set; }
public double MeasuredValue { get; set; }
public string Unit { get; set; }
public bool Result { get; set; }
}
You can use a master-detail form. Alternatively, you can create a grid where rows (of Board) can expand to display its children (of MeasureSteps), but that would be more complex.