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Filter data from 2 lists with diferent models C#

I have this models
public class RoutingAttributeModel
{
public int Bus_No { get; set; }
public int Attribute_No { get; set; }
public string Attribute_Name { get; set; }
public string Status { get; set; }
public string Notes { get; set; }
}
public class AgentRoutingAttributeModel
{
public int Agent_No { get; set; }
public int Bus_No { get; set; }
public int Attribute_No { get; set; }
public string Attribute_Name { get; set; }
public string Status { get; set; }
}
List<RoutingAttributeModel> lstComplete = new List<RoutingAttributeModel>();
List<AgentRoutingAttributeModel> lstAssigned = new List<AgentRoutingAttributeModel>();
Filled this with some data
Is it possible to filter with Linq? I want to save in a new list the diferent content between lstComplete and lstAssigned
I was trying to join both lists but got stuck there
var results1 = from cl in lstComplete
join al in lstAssigned
on cl.Attribute_No equals al.Attribute_No
select cl;

you can use linq
as my understanding, you try to find linked by attribute_No records and have a list of not matching properties?
lstComplete.Add(new RoutingAttributeModel(){
Attribute_Name = "aaa",
Attribute_No = 1,
Bus_No = 1,
Notes = "",
Status = "status"
});
lstAssigned.Add(new AgentRoutingAttributeModel()
{
Attribute_No = 1,
Agent_No = 10,
Bus_No = 1,
Attribute_Name = "bbb",
Status = "status2"
});
var lst = lstComplete
.Join(lstAssigned,
complete => complete.Attribute_No,
assigned => assigned.Attribute_No,
(complete, assigned) => new { lstComplete = complete, lstAssigned = assigned })
.Select(s => new { s.lstComplete, s.lstAssigned})
.Where(w=>
w.lstAssigned.Attribute_Name != w.lstComplete.Attribute_Name
|| w.lstAssigned.Bus_No != w.lstComplete.Bus_No
)
.ToList()
.Dump();
so result would be

You could try the following query
var filteredList = lstComplete
.Where(x => !lstAssigned.Any(y => y.Attribute_No == x.Attribute_No));

How to use condition for all children in Entity Framework

I have these classes:
public class product
{
public int Id { get; set; }
public string Title { get; set; }
public Store Store { get; set; }
public ICollection<Color> Colors { get; set; }
}
public class Color
{
public int Id { get; set; }
public string Name { get; set; }
public product Product { get; set; }
}
public class Store
{
public int Id { get; set; }
public string Name { get; set; }
public string City { get; set; }
public ICollection<product> Products { get; set; }
}
And I have this list :
List<Store> Stores = new List<Store>
{
new Store { Id = 1, Name = "Lilo", City = "Teh",
Products = new List<product>
{
new product
{ Id = 1, Title = "Asus",
Colors = new List<Color> {
new Color { Id = 1, Name = "Blue"},
new Color { Id = 2, Name = "Orange"}
}
},
new product
{ Id = 2, Title = "Dell",
Colors = new List<Color> {
new Color { Id = 1, Name = "Yellow"},
new Color { Id = 2, Name = "Orange"},
new Color { Id = 3, Name = "Red"}
}
}
}
},
new Store{Id=2,Name="filo",City="san",
Products=new List<product>
{
new product{Id=3,Title="Asus",
Colors=new List<Color>{
new Color{Id=1,Name="Blue"},
new Color{Id=2,Name="Orange"}
}
},
new product{Id=4,Title="Dell",
Colors=new List<Color>{
new Color{Id=1,Name="Yellow"},
new Color{Id=2,Name="Lime"},
new Color{Id=3,Name="Red"}
}
}
}
}
};
I want to select all stores where Name ="Lilo" and products names is "Dell " and Color="Blue". I want do this in Entity Framework, not Linq.
I use this code but it doesn't work :
var test = Stores.Where(s => s.Name = "lilo" && s.Products.Where(p => p.Title == "Dell").FirstOrDefault().Title == "Dell" && s.Products.Where(c => c.Colors.Where(ct => ct.Name == "Blue").FirstOrDefault().Name = "Blue")).ToList();
How can I do this ?

Do this By Method Syntax :
var stlist = Stores.Where(s => s.Name.ToLower() == "lilo" && s.Products.Where(p => p.Colors.Any(c=>c.Name=="Blue") && p.Title == "Dell").FirstOrDefault().Title == "Dell").ToList();
Updated :
And Hopeless's Answers is (best answers):
var lslist2= Stores.Where(s => s.Name == "lilo" && s.Products.Any(p => p.Title == "Dell" && p.Colors.Any(c => c.Color.Name == "Blue"))).ToList();
And by Linq :
var test = (from s in Stores
from p in s.Products
from c in p.Colors
where s.Name=="Lilo" && p.Title=="Dell"&& c.Name=="Blue"
select s
).ToList();

How do I create and insert one-to-many object with entity framework c#

I'm trying to create an object and insert to the database but keep getting the same error no matter what I try.
The row that I get the error on is ColumnGroupTest.ValidValues.Add(memberComment1); the error is
error message
NullReferenceException was unhandled by user code
my models
public class StoreColumnName
{
public int Id { get; set; }
public string StoreColumnGroupName { get; set; }
public string ColumnName { get; set; }
public string ColumnType { get; set; }
public List<StoreValidValue> ValidValues { get; set; }
}
public class StoreValidValue
{
public int Id { get; set; }
public string ValidValue { get; set; }
public StoreColumnName StoreColumnName { get; set; }
}
my controller
public ActionResult Index()
{
XDocument document = XDocument.Load(#"C:\Users\Physical.xml");
var result = document.Descendants("ColumnGroup");
foreach(var item in result){
var ColumnGroupName = item.Attribute("name").Value;
var Columns = item.Descendants("Column");
foreach (var itemColumn in Columns)
{
StoreColumnName ColumnGroup = new StoreColumnName();
var ColumnGroupTest = new StoreColumnName
{
StoreColumnGroupName = ColumnGroupName,
ColumnName = itemColumn.Attribute("name").Value,
ColumnType = itemColumn.Attribute("type").Value,
Id = 11
};
var ValidValues = itemColumn.Descendants("ValidValues");
var Values = ValidValues.Descendants("Value");
foreach (var Value in Values)
{
var memberComment1 = new StoreValidValue
{
StoreColumnName = ColumnGroupTest,
ValidValue = Value.Value,
Id = 101
};
ColumnGroupTest.ValidValues.Add(memberComment1);
}
}
}
return View();
}
(I gladly take tips on what I can improve when asking for help/guiding here).
Can anyone help ?

The issue that you're having is that you don't initialize your ValidValues property to a list. By default, those types of properties initialize to null unless you specify differently.
The best approach is to add that initialization to your constructor of that object.
public StoreColumnName() {
this.ValidValues = new List<StoreValidValue>();
}

Binding DropDownList in Mvc and Get Selected Value

my Model is
public class ChildMenu
{
public string Name { get; set; }
public string Comments { get; set; }
public List<UlrikenModel.ulriken_tblChildMenu> FormDetails { get; set; }
public long pkChildMenuID { get; set; }
public long fkSubMenuID { get; set; }
[Required(ErrorMessage = "Requird")]
public string ChildManuName { get; set; }
public DateTime CreatedDate { get; set; }
public DateTime ModifiedDate { get; set; }
public string Events { get; set; }
public IList<SelectListItem> Drp_Submenu { get; set; }
}
My Controller action is :
public ActionResult FillDeptName()
{
UlrikenEntities db1 = new UlrikenModel.UlrikenEntities();
List<SelectListItem> list = new List<SelectListItem>();
list.Add(new SelectListItem { Text = "-Please select-", Value = "Selects
items" });
var cat = (from c in db1.ulriken_tblSubMenu where c.fkMainMenuID == 1 &&
c.Status == true select new { c.pkSubMenuID,c.SubManuName }).ToArray();
for (int i = 0; i < cat.Length; i++)
{
list.Add(new SelectListItem
{
Text = cat[i].SubManuName,
Value = cat[i].pkSubMenuID.ToString(),
Selected = (cat[i].pkSubMenuID == 1)
});
}
ViewBag.list = list;
return View("ChildMenuOfSubMenu", ViewBag.list);
}
[HttpPost]
[ValidateInput(false)]
public ActionResult ChildMenuOfSubMenu(ChildMenu obj)
{
UlrikenEntities db = new UlrikenEntities();
ulriken_tblChildMenu objchild = new ulriken_tblChildMenu();
objchild.fkSubMenuID = obj.fkSubMenuID;
objchild.ChildMenuName = obj.ChildManuName;
objchild.cPageBody = obj.Name;
db.ulriken_tblChildMenu.Add(objchild);
db.SaveChanges();
return View("ChildMenuOfSubMenu");
}
and view is
#Html.DropDownListFor(m=>m.fkSubMenuID,
(IEnumerable<SelectListItem>)ViewBag.list,"Select" ,new { id = "ddlSubMenu" })
At start dropdown bind successfully but after saving data to database show an exception in
as "There is no ViewData item of type 'IEnumerable<SelectListItem>' that has the key
'fkSubMenuID'"
AnyBody guide me where am i doing wrong.

Move that code to the helper class:
public class ControllerHelper
{
public List<SelectListItem> FetchListItems()
{
List<SelectListItem> list = new List<SelectListItem>();
list.Add(new SelectListItem { Text = "-Please select-", Value = "Selects items" });
var cat = (from c in db1.ulriken_tblSubMenu where c.fkMainMenuID == 1 &&
c.Status == true select new { c.pkSubMenuID,c.SubManuName }).ToArray();
for (int i = 0; i < cat.Length; i++)
{
list.Add(new SelectListItem
{
Text = cat[i].SubManuName,
Value = cat[i].pkSubMenuID.ToString(),
Selected = (cat[i].pkSubMenuID == 1)
});
}
return list;
}
}
And then your controller should looks like:
public ActionResult FillDeptName()
{
UlrikenEntities db1 = new UlrikenModel.UlrikenEntities();
ViewBag.list = new ControllerHelper().FetchListItems();
return View("ChildMenuOfSubMenu", ViewBag.list);
}
[HttpPost]
[ValidateInput(false)]
public ActionResult ChildMenuOfSubMenu(ChildMenu obj)
{
UlrikenEntities db = new UlrikenEntities();
ulriken_tblChildMenu objchild = new ulriken_tblChildMenu();
objchild.fkSubMenuID = obj.fkSubMenuID;
objchild.ChildMenuName = obj.ChildManuName;
objchild.cPageBody = obj.Name;
db.ulriken_tblChildMenu.Add(objchild);
db.SaveChanges();
ViewBag.list = new ControllerHelper().FetchListItems();
return View("ChildMenuOfSubMenu");
}
Of course:
new ControllerHelper().FetchListItems();
should be a field in the controller class, for example:
private ControllerHelper controlerHelper;
You can use Interface instead of concerete implementation, if you use DI.
Regards

How merge two lists of different objects?

Using C# with LINQ, how can I merge two lists of different objects, say, Seminar and Conference?
They have some common and some different fields/properties and do not share unique id.
class Seminar
{
int id,
DateTime joinDate,
string name
}
class Conference
{
Guid confNumber,
DateTime joinDate
Type type
}
I have a list of:
List<Seminar>
List<Conference>
I need to merge them into a super List:
List<Object>
A code snippet would be great help.

If you just want a single List<object> containing all objects from both lists, that's fairly simple:
List<object> objectList = seminarList.Cast<object>()
.Concat(conferenceList)
.ToList();
If that's not what you want, then you'll need to define what you mean by "merge".

Following code works fine for me, if this is your definition of Merge
One solution
List<A> someAs = new List<A>() { new A(), new A() };
List<B> someBs = new List<B>() { new B(), new B { something = new A() } };
List<Object> allS = (from x in someAs select (Object)x).ToList();
allS.AddRange((from x in someBs select (Object)x).ToList());
Where A and B are some classes as follows
class A
{
public string someAnotherThing { get; set; }
}
class B
{
public A something { get; set; }
}
Another Solution
List<A> someAs = new List<A>() { new A(), new A() };
List<B> someBs = new List<B>() { new B(), new B { something = string.Empty } };
List<Object> allS = (from x in someAs select (Object)new { someAnotherThing = x.someAnotherThing, something = string.Empty }).ToList();
allS.AddRange((from x in someBs select (Object)new { someAnotherThing = string.Empty, something = x.something}).ToList());
Where A and B are having class definition as
class A
{
public string someAnotherThing { get; set; }
}
class B
{
public string something { get; set; }
}

Simple method of pure code
internal class Person
{
public int Id { get; set; }
public string UserName { get; set; }
}
internal class User
{
public string FirstName { get; set; }
public string LastName { get; set; }
}
internal class UserPerson
{
public int Id { get; set; }
public string UserName { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
}
private static void Main(string[] args)
{
Person[] people = new Person[3] { new Person { Id = 1, UserName = "AliUserName" }, new Person { Id = 2, UserName = "MortezaUserName" }, new Person { Id = 3, UserName = "SalarUserName" } };
User[] users = new User[4] { new User { FirstName = "ali", LastName = "Barzegari" }, new User { FirstName = "Morteza", LastName = "Sefidi" }, new User { FirstName = "Salar", LastName = "Pirzadeh" }, new User { FirstName = "Babak", LastName = "Hasani" } };
UserPerson[] userPeople = new UserPerson[people.Length > users.Length ? people.Length : users.Length];
if (people.Length > users.Length)
for (int i = 0; i < people.Length; i++)
{
userPeople[i] = new UserPerson
{
Id = people[i].Id,
UserName = people[i].UserName,
FirstName = users.Length <= i ? "" : users[i].FirstName,
LastName = users.Length <= i ? "" : users[i].LastName
};
}
else
for (int i = 0; i < users.Length; i++)
{
userPeople[i] = new UserPerson
{
Id = people.Length <= i ? 0 : people[i].Id,
UserName = people.Length <= i ? "" : people[i].UserName,
FirstName = users[i].FirstName,
LastName = users[i].LastName
};
}
Console.ReadLine();
}