Entity Framework The Duplicate Key Value Is

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Jul 4, 2013. Violation of PRIMARY KEY constraint 'PK_UsersRoles'. Cannot insert duplicate key in object 'dbo.UsersRoles'. The duplicate key value is.

This post is about how you can develop a generic data access layer (DAL) with full CRUD (Create, Read, Update and Delete) support using Entity Framework 5 with plain.

entity framework 4 – Cannot insert duplicate key in object 'dbo.User. – Aug 16, 2011. You can insert an entity together with related entities or you can insert an entity without the related entities, just referencing existing ones.

Aug 7, 2013. If this wasn't your primary key, and just a unique index, assuming SQL Server, you. GetObjectStateEntry(entity); var value = objectStateEntry.

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Oct 17, 2015. So thanks to King King comment I found out two things. First is that I can automatically find foreign key if only Foreign Id is assigned (not.

Newest ‘entity-framework’ Questions – Stack Overflow – The ADO.NET Entity Framework is a set of Object-Relational-Mapping (ORM) tools for the.NET Framework, and was first made available with.NET 3.5 SP1.