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If you are trying to run a program using a .dll file extension. I'm sorry it doesn't work that way. You need an executable (*.exe) to start a process. However; if you want to use the functionality of the .dll file. What you can do is add it to your project reference and check the exposed API/Class helper so you can get started with it. Hopes this helps you. Thanks.
Hi all - I have 3 foreign key ids and they are coming from same table, so they are referenced with table names in the below class, now - how can I know which object refers to which ID - for example the Ids
EnteredById, CreatedByUserId, UpdatedByUserId are coming from same table AspNetUser, but how would I know which Id belongs to AspNetUser, AspNetUser1, ,AspNetUser2 and how to handle AspNetUsers object? I am using EF Database First Approach any help please - thank you.
That's one table referenced 3 times in another table hence the Entity Framework created 3 different objects - its not a problem on Normalization - I am asking about Entity Framework solution for it - any help my friend. I am using Entity Framework Database first approach.
But its Database First - when I refresh the Entities automatically wouldn't it remove the settings that I put in my Entity classes? Just checking - thank you - how to handle if its Database first approach - thank you
I am getting the following error when I am write the following Linq - can somebody please suggest me to write the same without getting the error.
My Linq is as follows:
from v in allViolations
from r in allInspectionResults
from i in allItems
r.InspectionResultId == i.InspectionResultId &&
i.InspectionItemId == v.InspectionItemId
ViolationId = v.ViolationId,
ViolationNumber = v.ViolationNumber,
ViolationDate = v.ViolationDate,
ViolationType = v.ViolationType.ViolationTypeCode,
ItemYear = i.ItemYear,
ItemMakeManufacturer = i.ItemMakeManufacturer,
ItemModel = i.ItemModel,
VIN = i.VIN,
PIN = i.PIN,
InspectionResultId = r.InspectionResultId,
InspectionResultNumber = r.InspectionRequestNumber,
DealerDmvNumber = r.DealerDmvNumber,
InspectedCompanyName = (from a in contacts where a.ContactId == r.InspectedCompanyDataId select a.FirstName)?.FirstOrDefault()
At the line "InspectedCompanyName = (from a in contacts where a.ContactId == r.InspectedCompanyDataId select a.FirstName)?.FirstOrDefault()"
I am getting following error - how can I get rid of it - thank you
An expression tree lambda may not contain a null propagating operator
Hi I am trying to alter a column to fit max length - I changed the entity property and ran Add migration - it did well in the first then in committing it on Git or over written by the remote branch or something its last when I was merging it in master branch then onwards it started giving me issues - my property that I changed is as follows:
I tried in the following ways to workaround for it
Even though I made it EventComment 1000 in Database then deleted my migration file - then ran the add migration now the file is created in the above way - not able to do anything - now its not let me login to the application as the database is failing - any help please - later its failing if I make the EventComment length max in Database and ran the application - still its failing validation errors. Any help please - just get away from validating any more from Code First, its painful to care things this much. Any help please.
When I make the Database field as Max and Entity property also as 7999 - still it is giving me the following exception in the application - just not able to decide
The field EventComment must be a string with a maximum length of 1000.
I am getting the following error while trying to run the add migration
The Designer Code forthis migration file includes a snapshot of your current Code First model. This snapshot is used to calculate the changes to your model when you scaffold the next migration.
If you make additional changes to your model that you want to include inthis migration, then you can re-scaffold it by running 'Add-Migration AlterColumnLemgthEventComment' again.
Any help please?
modified 17-Mar-20 20:27pm.
Last Visit: 31-Dec-99 19:00 Last Update: 3-Dec-23 15:28