Develop Reference

Debugging Call Stack Exceeded C# Backend

I have a get route a that is going to get data of wells and well tests, when I execute the call on swagger, it will take awhile and then give me a call stack error. My problem is I cant figure out how to get a log or idea of where this is happening. The best I have been able to do so far is use point breaks at every step to see how far it gets. I've gotten to the controller route so I know that its grabbing the data just fine, my understanding is that it now has the data, and should use the view model to match and display the data. I have gone through about 100 data samples in the view model and it seems fine but there is 2400 units, all with 5 arrays inside of them. However it will simply error out with no message. Any ideas of whats going on or how to debug this? Is there a way in VS Code so see a better log of something like this or another tool that will do that will help in this situation?
** Service Code: **
public async Task<IEnumerable<SapDispatchViewModel>> GetDispatchDeliveryForSap()
{
var result = await _dispatchRepo.GetDispatchDeliveryForSap(TenantId);
var view = new List<SapDispatchViewModel>();
foreach (SapDispatch row in result)
{
var sapView = _mapper.Map<SapDispatch, SapDispatchViewModel>(row);
var items = await _dispatchItemRepo.GetDispatchItemsByTruckForSap(row.DispatchTruckId);
var viewItems = _mapper.Map<IEnumerable<SapDispatchItem>, IEnumerable<SapDispatchItemViewModel>>(items);
sapView.Items = viewItems;
view.Add(sapView);
}
return view;
}
** It calls this GetDispatchDeliveryForSap first: **
public async Task<IEnumerable<SapDispatch>> GetDispatchDeliveryForSap(string TenantId)
{
string deliveryType = "Delivery";
//resort to raw SQL to assist with performance improvements
FormattableString sql = $#"
WITH cte_latestStatus AS
( SELECT * FROM (
SELECT
s.TenantId,
s.DispatchId,
s.DispatchHeaderId,
s.RequestedArrival,
s.EstimatedArrival,
s.Status,
u.FirstName + ' ' + u.LastName UserName,
s.CreateDate StatusChangeDate,
row_number() over(partition by DispatchHeaderId order by CreateDate desc) as rn
FROM
DispatchStatus s
JOIN AspNetUsers u on s.CreateUserId = u.Id
) t
WHERE t.rn = 1
)
select w.wellid,
w.wellname,
wo.ErpId,
wc.ContractorName + ' ' + w.RigNumber Rig,
w.CountyParish County,
w.State,
d.type DispatchType,
u.LastName + ',' + u.FirstName OrderedBy,
ds.RequestedArrival RequestedDate,
dt.DriverName,
dt.SwamperName,
dt.TicketNumber,
dt.DispatchTruckId
from well w
join Dispatch d on w.wellid = d.DestinationWellId
join cte_latestStatus ds on d.DispatchId = ds.DispatchId and d.HeaderId = ds.DispatchHeaderId
join DispatchTruck dt on d.DispatchId = dt.DispatchId
join AspNetUsers u on d.CreateUserId = u.Id
left join WellContractorRef wcr on w.WellId = wcr.WellId
left join Contractor wc on wcr.ContractorId = wc.ContractorId
left join WellOperatorRef wor on w.WellId = wor.WellId
left join Operator wo on wor.OperatorId = wo.OperatorId
--join DispatchItem di on dt.DispatchTruckId = di.DispatchTruckId
where d.TenantId = {TenantId}
and d.type = {deliveryType}
and (ds.Status = 'Completed' or dt.status = 'Completed')
order by w.wellname"
;
var result = await context.SapDispatches.FromSqlInterpolated(sql).AsNoTracking().ToListAsync();
return result;
}
}
}
** Then maps via the view model to create the list: **
namespace Mudman.Model.ViewModels
{
public class SapDispatchViewModel
{
public string WellId { get; set; }
public string WellName { get; set; }
public string ErpId { get; set; }
public string Rig { get; set; }
public string County { get; set; }
public string State { get; set; }
public string DispatchType { get; set; }
public string OrderedBy { get; set; }
public DateTime? RequestedDate { get; set; }
public string DriverName { get; set; }
public string SwamperName { get; set; }
public long? TicketNumber { get; set; }
public IEnumerable<SapDispatchItemViewModel> Items { get; set; }
}
public class SapDispatchItemViewModel
{
public string ErpId { get; set; }
public Decimal? Price { get; set; }
public Decimal? Quantity { get; set; }
public string Size { get; set; }
public string Unit { get; set; }
}
}
** From there, it runs the foreach on the GetDispatchItemsForTruckSap: **
public async Task<IEnumerable<SapDispatchItem>> GetDispatchItemsByTruckForSap(string dispatchTruckId)
{
//resort to raw SQL to assist with performance improvements
FormattableString sql = $#"
WITH cte as (
SELECT
COALESCE(ProductId, ExpenseId) AS SalesItemID,
Price,
Quantity
FROM DispatchItem
WHERE DispatchTruckId = {dispatchTruckId}
)
SELECT si.ErpId,
cte.Price,
cte.Quantity,
si.Size,
si.Unit
FROM SalesItem si
INNER JOIN cte on cte.SalesItemID = si.SalesItemId"
;
var result = await context.SapDispatchItems.FromSqlInterpolated(sql).AsNoTracking().ToListAsync();
return result;
}
}
}
** Maps with the Item View Model: **
public class SapDispatchItemViewModel
{
public string ErpId { get; set; }
public Decimal? Price { get; set; }
public Decimal? Quantity { get; set; }
public string Size { get; set; }
public string Unit { get; set; }
}
}
** Then it will hit the return and thats where it will error out.
Also, here is what the callstack is looking like when you hit that return.

Try turning on Break When Thrown on Common Language Runtime Exceptions and it should break at the error:

Sql query combining results

I have the following:
void Main()
{
// I need to get the below query, but with the newest comment date as well of each post.
// Gives me all the posts by the member
var member_id = 1139;
var query = (from posts in Ctm_Forum_Posts
join category in Ctm_Forum_Categories on posts.FK_Categori_ID equals category.Id
where posts.Archieved == false
&& posts.Deleted == false
&& posts.FK_Member_ID == member_id
select new ForumPostModel(){
Id = posts.Id,
BodyText = posts.BodyText,
Summary = posts.Summary,
Title = posts.Title,
Created = posts.Created,
Updated = posts.Updated,
CategoryName = category.Title,
});
// this gives the newest comment date (registration_timestamp) from a specific post with id = 1
var NewestCommentDate = (from comments in Ctm_Comments
join posts in Ctm_Forum_Posts on comments.Page_ID equals posts.Id
where posts.Id == 1 && comments.Deleted == false
orderby comments.Reqistration_timestamp descending
select comments.Reqistration_timestamp).FirstOrDefault();
}
// Model of the result.
public class ForumPostModel{
public int Id { get; set; }
public string Title { get; set; }
public string BodyText { get; set; }
public string Summary { get; set; }
public DateTime Created { get; set; }
public DateTime Updated { get; set; }
public string CategoryName { get; set; }
public DateTime LatestCommentTime { get; set; }
}
Right now the two queries work, but my problem is the performance sucks,, so im trying to combine the results into a single query, so my load time will be much less.
I tried searching about unions, but have been unable to figure it out.

c# LINQ query to select whole object into new?

Not sure if i worded the question correctly, but what im trying to do is return a new viewmodel with one of the parts being a booking:
public class Booking
{
public int BookingId { get; set; }
public int CustomerId { get; set; }
public Guid UniqueId { get; set; }
public string EventId { get; set; }
public bool IsPaid { get; set; }
public double Price { get; set; }
public DateTime BookingDate { get; set; }
public DateTime DateBooked { get; set; }
[JsonIgnore]
public Customer Customer { get; set; }
[JsonIgnore]
public ICollection<BookingService> BookingServices { get; set; }
[NotMapped]
public IEnumerable<Service> Services { get; set; }
}
and my query is:
var customers = _dbContext.Customers
.Select(c => new CustomerBookingsViewModel
{
Customer = c,
Bookings = c.Bookings.Select(b => new Booking
{
BookingId = b.BookingId,
BookingDate = b.BookingDate,
DateBooked = b.DateBooked,
CustomerId = b.CustomerId,
UniqueId = b.UniqueId,
EventId = b.EventId,
IsPaid = b.IsPaid,
Price = b.Price,
Services = b.BookingServices.Select(s => s.Service)
}),
}
)
.ToList();
What I want to know is how to I select all the booking info into the booking without selecting each part, ie:
BookingId = b.BookingId,
BookingDate = b.BookingDate,
DateBooked = b.DateBooked,
CustomerId = b.CustomerId,
UniqueId = b.UniqueId,
EventId = b.EventId,
IsPaid = b.IsPaid,
Price = b.Price,
Can it be done or because the list of services is inside the booking model it cant?
Thanks.

You could implement the IClonable interface on your class.
public class MyClass : ICloneable
{
public int Id { get; set; }
public object Clone() => MemberwiseClone();
}
Usage:
var list1 = new List<MyClass>
{
new MyClass() { Id = 2 },
new MyClass() { Id = 5 }
};
var list2 = list1.Select(x => (MyClass)x.Clone()).ToList();
list2.First().Id = 10; //list1 won't be affected

You should use AutoMapper here to avoid writing each path.
https://automapper.org/
http://docs.automapper.org/en/stable/Getting-started.html

There is no other way, at least it is not related to LINQ or queries.
The question "How to clone an object" has been answered here:
Creating a copy of an object in C#

There is no LINQ way to do this. I would suggest using custom Attribute marking every property you want to copy. This would help if you want not to copy the whole object but some properties. After marking every property you need you can just set the marked props with reflection from one of the objects to the other.

C# link how to populate parent list with sublist from two related lists

I'm new to Linq but need to get some code finished quickly. I have two classes:
public class SAPMember
{
public string EmployeeNumber { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public List<CostCentre> CostCentres { get; set; }
}
public class CostCentre
{
public string EmployeeNumber { get; set; }
public string CostCentreCode { get; set; }
public string Division { get; set; }
}
Each SAPMember can have one or more CostCentres.
This is my code to populate a two independent lists initially (using Dapper), which I then hope to combine into one list with a sublist:
_SAPMembers = new List<SAPMember>();
string sql = #"SELECT EmployeeNo as EmployeeNumber,
LastName, FirstName
FROM Employees";
_SAPMembers = DbConn.Query<SAPMember>(sql).ToList();
List<CostCentre> _CostCentres = new List<CostCentre>();
string sql2 = #"SELECT EmployeeNo as EmployeeNumber, CostCentreCode,
DivisionDescription as Division
FROM Employees";
_CostCentres = DbConn.Query<CostCentre>(sql2).ToList();
I've tried Linq grouping and joins etc but can't get the syntax right, and my _SAPMembers list populated with employee details plus related list of costcentres.
Code sample would be greatly appreciated. I've seen that this might be possible from one more complex Dapper query, but I think for my skill level linq might be a better solution.

As Amit suggested, I could use Dapper, as so: (note:I changed CostCentre key to EmpNo)
if (_SAPMembers == null)
{
List _SAPMembers = new List();
var lookup = new Dictionary<string, SAPMember>();
var result = DbConn.Query<SAPMember, CostCentre, SAPMember>(#"
select DISTINCT e.EmployeeNo as EmployeeNumber, e.LastName, e.FirstName, c.EmployeeNo as EmpNo
, c.CostCentreCode as Name, c.DivisionDescription as Division
FROM EmployeeListing e
join EmployeeListing c on e.EmployeeNo = c.EmployeeNo
where e.TerminationDate is null and c.TerminationDate is null", (e, c) =>
{
if (!lookup.TryGetValue(e.EmployeeNumber, out SAPMember sapMember))
lookup.Add(e.EmployeeNumber, sapMember = e);
if (sapMember.CostCentres == null)
sapMember.CostCentres = new List<CostCentre>();
sapMember.CostCentres.Add(c);
return sapMember;
}, splitOn: "EmpNo");
_SAPMembers = result.Distinct().ToList();
}
return _SAPMembers;

Add data to a list insde a list where item in the prerent list

I would like to select a where statement that adds items to a list where only product codes match. I have it so it gets all of the products sold in the sale but I would like there were statement to get only products in this sale.
PS: This is really hard to explain
Model
public class userSales
{
public string Name { get; set; }
public string UserName { get; set; }
public int Sale_Id { get; set; }
public int CostumerID { get; set; }
public string Sale_Date { get; set; }
public string Paid { get; set; }
public Nullable<int> Sale_Cost { get; set; }
public string Discount_Code { get; set; }
public List<SaleProduct> saleProductsList { get; set; }
}
public class SaleProduct
{
public int SaleID { get; set; }
public string ProductCode { get; set; }
public int ProductCount { get; set; }
public string Image_Path { get; set; }
public string Shoot_Date { get; set; }
public string Shoot_Info { get; set; }
}
Linq statement where I'm having trouble:
var test = (from _ClientData in db.ClientDatas
join _salesInfo in db.Sales_Infoes
on _ClientData.CostumerID
equals _salesInfo.CostumerID
where _ClientData.UserName == _userName
select new userSales()
{
CostumerID = _ClientData.CostumerID,
Name = _ClientData.Name,
UserName = _ClientData.UserName,
Sale_Id = _salesInfo.Sale_Id, // This is the item i would like to use in my were statement
Sale_Date = _salesInfo.Sale_Date,
Sale_Cost = _salesInfo.Sale_Cost,
Discount_Code = _salesInfo.Discount_Code,
Paid = _salesInfo.Paid,
// Problem here
saleProductsList = db.SaleProducts.Where()
}).ToList();
Got to this based on the answer:
var reult = db.ClientDatas.Where(a => a.UserName == _userName)
.Join(db.Sales_Infoes,
a => a.CostumerID,
b => b.CostumerID,
(a, b) => new userSales()
{
CostumerID = a.CostumerID,
Discount_Code = b.Discount_Code,
Sale_Cost = b.Sale_Cost,
Sale_Id= b.Sale_Id,
Name = a.Name,
Sale_Date = b.Sale_Date,
UserName = a.UserName,
Paid = b.Paid,
saleProductsList = db.SaleProducts.Where(c => c.SaleID == b.Sale_Id).ToList()
}).ToList();

You're not looking for a where, you're looking for a join. Where filters the results on a single table, join intersects two tables which is actually what you want here.
var result = db.Sales_Infoes.Where(x => x.UserName == _userName)
.Join(db.ClientDatas,
x => x.Sale_Id,
y => y.Sale_id,
(x, y) => new userSales() {
// x is SalesInfo obj y is ClientDatas obj do assignement here
Name = y.Name,
Sale_Date = y.Sale_date
}).ToList();
Just fyi I haven't had a chance to test that but it's the basic idea. You don't need a select like in your statement because the last argument I'm passing into join is the lambda (x, y) => ... in that case x and y are the current row from each table (that we've gotten from applying our where to the user sales table then joining those results into the salesproduct table) so whatever projections you want to do occur there. The other two method args above that are the telling join which fields to compare, it's the 'key selector' lambda expression for each table.