Can not access object's properties inside my view model - c#

I have added the following two model view classes:
public class AssetCount
{
public int CustomerCount { get; set; }
public int DataCenterCount { get; set; }
public int FirewallCount { get; set; }
public int RouterCount { get; set; }
public int VirtualMachineCount { get; set; }
public int ServerCount { get; set; }
public int StorageDeviceCount { get; set; }
public int RackCount { get; set; }
public int SwitchCount { get; set; }
public int CustomCount { get; set; }
}
public class SystemInformation
{
public AssetCount AssetCount { get; set; }
public ICollection<TechnologyAudit> TechnologyAudit { get; set; }
public ICollection<AdminAudit> AdminAudit { get; set; }
public ICollection<Technology> LatestTechnology { get; set; }
}
But, inside my model class method, I was unable to access the AssetCount object's properties, such as:
public SystemInformation GetSystemInfo(int pagesize)
{
SystemInformation s = new SystemInformation()
{
AssetCount.CustomerCount = entities.AccountDefinitions.Count() //I can not access the CustomerCount !!!!
So can anyone advise me what the problem is? Thanks.


You have to initialize AssetCount property first:
SystemInformation s = new SystemInformation()
{
AssetCount = new AssetCount { CustomerCount = entities.AccountDefinitions.Count() }
};

Related

C# Linq set merged lists as datasource

I'm currently merging to lists will be the datasource of a gridview. This is my code:
// Get models
var products = await API.Zelkon.Products.GetAll();
var productsCurrencies = await API.Zelkon.CurrenciesBackend.Get();
// Merge lists
var results = products.Item1.Zip(productsCurrencies.Item1, (x, y) => new Tuple<Models.Products, Models.Zelkon.CurrenciesBackend>(x, y));
// Create datasource
var datasource = results.Select(r => new { r.Item2.price, r.Item2.setup_fee, r.Item1.product_number });
GridProducts.DataSource = datasource;
// GridProducts.VisibleColumns("name");
UI.CustomizeGridDefault(GridProducts);
My problem is that the value of r.Item2.setup_fee is always the value of the first row. I have checked the collection and the data is correct there.
Am I doing something wrong?
Below are the structures:
class CurrenciesBackend
{
public string currency_name { get; set; }
public string currency_code { get; set; }
public double price { get; set; }
public double recommended_price { get; set; }
public double setup_fee { get; set; }
public int product_number { get; set; }
}
class Products
{
public string name { get; set; }
public string description { get; set; }
public string invoice_layout { get; set; }
public string layout_number { get; set; }
public string payment_terms_name { get; set; }
public string payment_terms_number { get; set; }
public DateTime creation_date { get; set; }
public int enabled { get; set; }
public int is_subscription { get; set; }
public int is_delivery_required { get; set; }
public int allow_discount { get; set; }
public int allow_trial { get; set; }
public int max_discount { get; set; }
public int max_discount_duration { get; set; }
public int vat_percentage { get; set; }
public int trial_period { get; set; }
public int binding_period { get; set; }
public int days_of_credit { get; set; }
public int unit { get; set; }
public string allowed_country_codes { get; set; }
public int product_number { get; set; }
public int authorize_invoice { get; set; }
}
Thanks in advance

How to add a list of objects inside a list in C# MVC

I have a view model containing list of sections like below. I need to create a list of ResponseEntryViewModel and add sections and sub sections inside sections and questions inside subsections.
Any suggestions?
public class ResponseEntryViewModel
{
public int TypeID { get; set; }
public string TypeName { get; set; }
public int User_ID { get; set; }
public List<SectionDataModel> Sections{ get; set; }
public ResponseEntryViewModel()
{
Sections = new List<SectionDataModel>();
}
public class SectionDataModel
{
public int SectionID { get; set; }
public string Name { get; set; }
public string Status { get; set; }
public int TypeId { get; set; }
public List<SubSectionModel> SubSections { get; set; }
public SectionDataModel()
{
SubSections = new List<SubSectionModel>();
}
}
public class SubSectionModel
{
public int SubSectionID { get; set; }
public string Name { get; set; }
public string Status { get; set; }
public int SectionId { get; set; }
public List<QuestionModel> QuestionsList { get; set; }
public SubSectionModel()
{
QuestionsList = new List<QuestionModel>();
}
}
public class QuestionModel
{
public int SubSectionID { get; set; }
public int QuestionID { get; set; }
public string Question { get; set; }
}
}

Try this:
public class ResponseEntryViewModel
{
public int TypeID { get; set; }
public string TypeName { get; set; }
public int User_ID { get; set; }
public List<SectionDataModel> Sections { get; set; }
public ResponseEntryViewModel(SectionDataModel obj)
{
Sections = new List<SectionDataModel>();
Sections.Add(obj);
}
public class SectionDataModel
{
public int SectionID { get; set; }
public string Name { get; set; }
public string Status { get; set; }
public int TypeId { get; set; }
public List<SubSectionModel> SubSections { get; set; }
public SectionDataModel(SubSectionModel obj)
{
SubSections = new List<SubSectionModel>();
SubSections.Add(obj);
}
}
public class SubSectionModel
{
public int SubSectionID { get; set; }
public string Name { get; set; }
public string Status { get; set; }
public int SectionId { get; set; }
public List<QuestionModel> QuestionsList { get; set; }
public SubSectionModel(QuestionModel obj)
{
QuestionsList = new List<QuestionModel>();
QuestionsList.Add(obj);
}
}
public class QuestionModel
{
public int SubSectionID { get; set; }
public int QuestionID { get; set; }
public string Question { get; set; }
}
}

NullReferenceException attempting to access a list located in a class?

I am attempting to retrieve information using the Steam API. I created the classes offerStuff and itemsClass, offerStuff contains public List<itemsClass> items { get; set; }, however, whenever I attempt to access this list through os.items.Add(item), my program crashes with NullReferenceException. Is there some declaration I am missing? If so, how would I declare it so I can access it without the exception?
public static List<offerStuff> pollOffers()
{
using (dynamic tradeOffers = WebAPI.GetInterface("IEconService", config.API_Key))
{
List<offerStuff> OfferList = new List<offerStuff>();
offerStuff os = new offerStuff();
KeyValue kvOffers = tradeOffers.GetTradeOffers(get_received_offers: 1);//, active_only: 1
foreach (KeyValue kv in kvOffers["trade_offers_received"].Children)
{
os.tradeofferid = kv["tradeofferid"].AsInteger(); ;
os.accountid_other = Convert.ToUInt64(kv["accountid_other"].AsInteger());
os.message = kv["message"].AsString();
os.trade_offer_state = kv["trade_offer_state"].AsInteger();
foreach (KeyValue kv2 in kv["items_to_receive"].Children)
{
itemsClass item = new itemsClass();
item.appid = (kv2["appid"].AsInteger());
item.assetid = kv2["assetid"].AsInteger();
item.classid = kv2["classid"].AsInteger();
item.instanceid = kv2["instanceid"].AsInteger();
item.amount = kv2["amount"].AsInteger();
item.missing = kv2["missing"].AsInteger();
os.items.Add(item);
}
os.is_our_offer = kv["is_our_offer"].AsBoolean();
os.time_created = kv["time_created"].AsInteger();
os.time_updated = kv["time_updated"].AsInteger();
OfferList.Add(os);
}
return OfferList;
}
}
}
public class offerStuff
{
public int tradeofferid { get; set; }
public SteamID accountid_other { get; set; }
public string message { get; set; }
public int trade_offer_state { get; set; }
public List<itemsClass> items { get; set; }
public bool is_our_offer { get; set; }
public int time_created { get; set; }
public int time_updated { get; set; }
}
public class itemsClass
{
public int appid { get; set; }
public int assetid { get; set; }
public int classid { get; set; }
public int instanceid { get; set; }
public int amount { get; set; }
public int missing { get; set; }
}

The problem is probably that you're not initializing the collection items. You could do it on your contructor like this
public offerStuff()
{
items = new List<itemsClass>();
}

deserializing an object with a generic list

I am trying to deserialize an object, the type is populated but I am getting null for the List<Sport>. Any ideas?
My classes:
class Sports
{
public MsgTypes type { get; set; }
public List<Sport> Sport { get; set; }
}
class Sport
{
public int Id { get; set; }
public int Import_id { get; set; }
public string Name { get; set; }
public int Active { get; set; }
public int Order { get; set; }
public int Min_bet { get; set; }
public int Max_bet { get; set; }
public int Updated { get; set; }
public string Feed_type { get; set; }
public string Locale { get; set; }
}
The command for deserialization:
Sports _sports = (Sports) JsonConvert.DeserializeObject<Sports>(jsonObj);
This is my JSON object:
"{\"code\":0,\"type\":4,\"Sports\":[{\"Sport\":{\"id\":\"1\",\"import_id\":\"1\",\"name\":\"Soccer\",\"active\":true,\"order\":\"1\",\"min_bet\":\"0\",\"max_bet\":\"0\",\"updated\":\"1403194889\",\"feed_type\":\"Betradar\",\"locale\":\"en_us\"}},{\"Sport\":{\"id\":\"2\",\"import_id\":\"5\",\"name\":\"Tennis\",\"active\":true,\"order\":\"3\",\"min_bet\":\"0\",\"max_bet\":\"0\",\"updated\":\"1403194771\",\"feed_type\":\"Betradar\",\"locale\":\"en_us\"}},{\"Sport\":{\"id\":\"3\",\"import_id\":\"6\",\"name\":\"Handball\",\"active\":true,\"order\":\"6\",\"min_bet\":\"0\",\"max_bet\":\"0\",\"updated\":\"1403152901\",\"feed_type\":\"Betradar\",\"locale\":\"en_us\"}},{\"Sport\":{\"id\":\"4\",\"import_id\":\"4\",\"name\":\"Ice Hockey\",\"active\":true,\"order\":\"4\",\"min_bet\":\"0\",\"max_bet\":\"0\",\"updated\":\"1403080245\",\"feed_type\":\"Betradar\",\"locale\":\"en_us\"}},{\"Sport\":{\"id\":\"7\",\"import_id\":\"2\",\"name\":\"Basketball\",\"active\":true,\"order\":\"2\",\"min_bet\":\"0\",\"max_bet\":\"0\",\"updated\":\"1403194830\",\"feed_type\":\"Betradar\",\"locale\":\"en_us\"}},{\"Sport\":{\"id\":\"8\",\"import_id\":\"23\",\"name\":\"Volleyball\",\"active\":true,\"order\":\"5\",\"min_bet\":\"0\",\"max_bet\":\"0\",\"updated\":\"1403194591\",\"feed_type\":\"Betradar\",\"locale\":\"en_us\"}},{\"Sport\":{\"id\":\"9\",\"import_id\":\"12\",\"name\":\"Rugby\",\"active\":true,\"order\":\"7\",\"min_bet\":\"0\",\"max_bet\":\"0\",\"updated\":\"1403194710\",\"feed_type\":\"Betradar\",\"locale\":\"en_us\"}},{\"Sport\":{\"id\":\"12\",\"import_id\":\"11\",\"name\":\"Motorsport\",\"active\":true,\"order\":\"12\",\"min_bet\":\"0\",\"max_bet\":\"0\",\"updated\":\"1403065699\",\"feed_type\":\"Betradar\",\"locale\":\"en_us\"}},{\"Sport\":{\"id\":\"13\",\"import_id\":\"3\",\"name\":\"Baseball\",\"active\":true,\"order\":\"13\",\"min_bet\":\"0\",\"max_bet\":\"0\",\"updated\":\"1403194834\",\"feed_type\":\"Betradar\",\"locale\":\"en_us\"}},{\"Sport\":{\"id\":\"14\",\"import_id\":\"16\",\"name\":\"American Football\",\"active\":true,\"order\":\"14\",\"min_bet\":\"0\",\"max_bet\":\"0\",\"updated\":\"1403143326\",\"feed_type\":\"Betradar\",\"locale\":\"en_us\"}},{\"Sport\":{\"id\":\"16\",\"import_id\":\"34\",\"name\":\"Beach Volley\",\"active\":true,\"order\":\"16\",\"min_bet\":\"0\",\"max_bet\":\"0\",\"updated\":\"1403194417\",\"feed_type\":\"Betradar\",\"locale\":\"en_us\"}}]}"

You need one more level of nesting and different class names. You should be able to deserialize to such structure:
class SportsParent
{
//Code for MsgTypes was not provided so it is commented out
public List<SportGroup> Sports { get; set; }
}
class SportGroup
{
public SportItem Sport { get; set; }
}
class SportItem
{
public int Id { get; set; }
public int Import_id { get; set; }
public string Name { get; set; }
public bool Active { get; set; } //need to be converted to bool instead of int
public int Order { get; set; }
public int Min_bet { get; set; }
public int Max_bet { get; set; }
public int Updated { get; set; }
public string Feed_type { get; set; }
public string Locale { get; set; }
}
You can deserialize using such code:
SportsParent _sports = JsonConvert.DeserializeObject<SportsParent>(jsonObj);

AutoMapper for Nested inside Nested with Entity Framework?

I am trying to AutoMapper to EF models which are nested inside nested.
For Example in below code categorySrc, languageSrc, abstractSrc..etc and categoryDest, languageDest, abstractDest ..etc classes are same.
Now I am trying to Map categorySrc to categoryDest, So I made like below, if throwing an error
Is something I am doing wrong here?
var categoryData = abstractContext.GetCategoryByCatId(catId);
Mapper.CreateMap<Models.categoryDest, categorySource>();
Mapper.CreateMap<languageDest, Models.languageSource>();
Mapper.CreateMap<#abstractDest, Models.#abstractSrc>();
Mapper.CreateMap<abstract_categoryDest, Models.abstract_categorySrc>();
Mapper.CreateMap<questionDest, Models.questionSrc>();
Mapper.CreateMap ... //For other objects
Mapper.CreateMap ...//For other objects
Mapper.AssertConfigurationIsValid(); //Error occurring here
var category = Mapper.Map<category,Models.category>(categoryData);
Classes:
public partial class categoryDest
{
public int category_id { get; set; }
public int language_id { get; set; }
public virtual languageDest language { get; set; }
}
public partial class languageDest
{
public language()
{
this.abstracts = new HashSet<#abstractDest>();
this.abstract_category = new HashSet<abstract_categoryDest>();
this.categories = new HashSet<categoryDest>();
this.questions = new HashSet<questionDest>();
}
public int language_id { get; set; }
public string language_name { get; set; }
public string language_locale_code { get; set; }
public virtual ICollection<#abstractDest> abstracts { get; set; }
public virtual ICollection<abstract_categoryDest> abstract_category { get; set; }
public virtual ICollection<categoryDest> categories { get; set; }
public virtual ICollection<questionDest> questions { get; set; }
}
public partial class #abstractDest
{
public #abstract()
{
this.abstract_category = new HashSet<abstract_categoryDest>();
this.abstract_fields = new HashSet<abstract_fieldsDest>();
this.abstract_image = new HashSet<abstract_imageDest>();
this.people = new HashSet<person>();
}
public int abstract_id { get; set; }
public int language_id { get; set; }
public string abstract_name { get; set; }
public virtual ICollection<abstract_categoryDest> abstract_category { get; set; }
public virtual ICollection<abstract_fieldsDest> abstract_fields { get; set; }
public virtual ICollection<abstract_imageDest> abstract_image { get; set; }
public virtual languageDest language { get; set; }
public virtual ICollection<personDest> people { get; set; }
}
How to do this complex mapping?

Categories