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ENTITY-FRAMEWORK QUESTIONS

Where condition in Entity Framework
Where condition in Entity Framework
it fixes the issue I want to get a list of requisitions on dashboard page which is based on condition. The condition is list should show requisition which is assigned to user and has 'started' status. It shows perfectly with this query. , You need br
TAG : entity-framework
Date : November 21 2020, 07:38 AM , By : Jon
The relationship could not be changed because one or more properties of the foreigner keys are not nullable
The relationship could not be changed because one or more properties of the foreigner keys are not nullable
I hope this helps . To allow change tracking to do relationship fixup, inside the same DbContext scope, do the following: read the new parent and the child form the Db add the child to the new parent. This will fix up the relationship (change the FK)
TAG : entity-framework
Date : November 20 2020, 09:01 AM , By : miguel angel tomairo
Entity Framework unique key constraints for email + type
Entity Framework unique key constraints for email + type
may help you . Use the TPH (Table Per Hierarchy) ORM pattern which is the default pattern when you have base class User and derived classes like Guest and AccountOwner. Remove the code you put in OnModelCreating that map Guest and AccountOwner to the
TAG : entity-framework
Date : November 14 2020, 06:58 AM , By : user4573331
Entity Framework edmx click on diagram very slow
Entity Framework edmx click on diagram very slow
wish of those help We had the same issue on 2 laptops with Windows 10 and touchscreens. Killing the process TabTip.exe seems to solve the issue. Source: https://connect.microsoft.com/VisualStudio/Feedback/Details/2011437
TAG : entity-framework
Date : November 13 2020, 05:40 AM , By : Eye Ant
How to enable Seperate Audits Table in Entity Framework
How to enable Seperate Audits Table in Entity Framework
hop of those help? The library Audit.EntityFramework can help you to do what you want.You'll need to implement your own DataProvider to store the data formatted as you wish.
TAG : entity-framework
Date : November 11 2020, 09:01 AM , By : Noha Mohamed
Entity Framework 6, cascade delete of mapped join table
Entity Framework 6, cascade delete of mapped join table
this will help When the many-to-many association is a self reference, EF chooses to create the foreign keys as not cascading. If it would make both keys cascading there would be a circular cascade, which Sql Server doesn't allow. Apparently, EF doesn
TAG : entity-framework
Date : November 07 2020, 09:00 AM , By : Zebra_123
Just one of Entity Framework tables is not updated in EDMX file
Just one of Entity Framework tables is not updated in EDMX file
it helps some times Most probably the problem is that table in database have no primary key defined. Just create the one and the problem will be solved.
TAG : entity-framework
Date : November 06 2020, 09:01 AM , By : Himanshu Kumar
Error: Invalid object name 'dbo.__MigrationHistory'. with custom schema name
Error: Invalid object name 'dbo.__MigrationHistory'. with custom schema name
Hope this helps Well, there is a workaround.If you add a file to your project with the following code, things will work.
TAG : entity-framework
Date : November 06 2020, 04:03 AM , By : Samsul Arif
How to have two self-references in an entity class
How to have two self-references in an entity class
With these it helps Fixed!EF wants to know how the relations look like from the other side of Foo, i.e.:
TAG : entity-framework
Date : November 04 2020, 04:02 PM , By : user4567149
InvalidOperationException when adding Migration. Can't resolve service for type IHttpContextAccessor
InvalidOperationException when adding Migration. Can't resolve service for type IHttpContextAccessor
help you fix your problem It seems this error occurred because my DbContext class didn't have an empty constructor. My constructor took in a type that DI needed to provide an IHttpContextAccessor to. When running in a browser, everything works fine,
TAG : entity-framework
Date : October 31 2020, 05:41 PM , By : Руслан Ткачук
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