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How to select all fields and some new fields in LINQ?

  • I have an RDLC report
  • The date format stored in SQL DB is Georgian. I want to show the date in the report as Persian.
  • Using Linq, I want to select all the database fields, in addition, some new field that will be used as Persian date fields.

I used the syntax below:

    var invoices = from invoice in dbContext.eve_Invoices
                    select new
                    {

                        invoice.CreatorID,
                        invoice.DateChange,
                        invoice.DateCreation,
                        invoice.DatePrint,
                        invoice.Discount,
                        invoice.DiscountPercentage,
                        invoice.DiscountType,
                        invoice.Fare,
                        invoice.ID,
                        invoice.InvoiceStatus,
                        invoice.NumberOfItems,
                        invoice.Packaging,
                        invoice.PrintID,
                        invoice.RawPrice,
                        invoice.RoundOff,
                        invoice.ServiceCharge,
                        invoice.ServingType,
                        invoice.TableID,
                        invoice.Tax,
                        invoice.TotalPrice,
                        invoice.ValidityStatus,
                        PersianYear = invoice.DateCreation != null ? pc.GetYear((DateTime)invoice.DateCreation) : 0,
                        PersianMonth = invoice.DateCreation != null ? pc.GetDayOfMonth((DateTime)invoice.DateCreation) : 0,
                        PersianDay = invoice.DateCreation != null ? pc.GetDayOfMonth((DateTime)invoice.DateCreation) : 0
                    };

Is there a way to transfer all invoice fields in addition to the new fields, for example:

    var invoices = from invoice in dbContext.eve_Invoices
                    select new
                    {

                        invoice.*,
                        PersianYear = invoice.DateCreation != null ? pc.GetYear((DateTime)invoice.DateCreation) : 0,
                        PersianMonth = invoice.DateCreation != null ? pc.GetDayOfMonth((DateTime)invoice.DateCreation) : 0,
                        PersianDay = invoice.DateCreation != null ? pc.GetDayOfMonth((DateTime)invoice.DateCreation) : 0
                    };

I also tried to choose a new {invoice, ....}, but this will not lead to the fact that it will be the same as the first.

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2 answers

You can transfer all the feils, but this is not beautiful, it is better to transfer the score, and not its fields:

var invoices = from invoice in dbContext.eve_Invoices
                select new
                {
                    RelatedInvoice = invoice,
                    PersianYear = invoice.DateCreation != null ? pc.GetYear((DateTime)invoice.DateCreation) : 0,
                    PersianMonth = invoice.DateCreation != null ? pc.GetDayOfMonth((DateTime)invoice.DateCreation) : 0,
                    PersianDay = invoice.DateCreation != null ? pc.GetDayOfMonth((DateTime)invoice.DateCreation) : 0
                };

P.S: , linq2entities ( IDE, :):

PersianDay = invoice.DateCreation != null ? pc.GetDayOfMonth((DateTime)invoice.DateCreation) : 0

, , .

+5

-.

var invoices = from invoice in dbContext.eve_Invoices
               select new
               {
                 invoice,
                 PersianYear = invoice.DateCreation != null ? >pc.GetYear((DateTime)invoice.DateCreation) : 0,
                 PersianMonth = invoice.DateCreation != null ? >pc.GetDayOfMonth((DateTime)invoice.DateCreation) : 0,
                 PersianDay = invoice.DateCreation != null ? >pc.GetDayOfMonth((DateTime)invoice.DateCreation) : 0
               };


 foreach (var invc in invoices)
  { 
     //invc.invoice.CreatorID
  }

. , invoice.DateCreation - Nullable, .

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