Entity Framework error initialization

Entity Framework error - Error 11009: Property ' ' is not mapped

Your model's xml file may still have it if you look there. Try manually removing it from that XML file before attempting to update again. Take backups, however, just in case.

Entity Framework - Error 11007: Entity type is not mapped.

via MSDN. Entity Type Is Not Mapped Error 11007 This mistake happens when a conceptual model entity type is not mapped to the data source. Map the entity type to the data source to fix this issue. View the Microsoft link....Entity Mapping

Entity Framework with SQLite Error: An error occurred while reading from the store provider's data reader

The issue was brought on by many threads utilizing the same DBContext to query the database....The issue is resolved by giving each thread its own DBContext....In my situation, the DBContext was injected into the class that executes the query using Castle Windsor. The issue was resolved by setting the DBContext's lifestyle to one per thread.

Entity Framework 6 error - ICollection does not contain a definition for sub-entity

To do it, you must employ a collection-based technique of some type. What you are trying to query for in this case is unclear to me. I'm assuming you want all articles where a subdivision with that name already exists....query = context.ContentArticle.Where( c => c.ContentArticleSubdivisions.Any(cs => cs.Subdivisions.Any(s => s.Name == subdivis...

Entity Framework Error Deleting Entity with Foreign Key Relationship

Something like this ought to function since you already have the question ids to delete:...// assuming db is your DbContext var questions = db.QuizWithQuestions .Where(q => deletedQuestions.Contains(q.Id)) .Include(q => q.QuizUserAnswers); // assuming this is your DbSet db.QuizWithQuestions.RemoveRange(questions...

Database Initialization in Entity Framework Code First

Where you are in the development process will determine your answer. On the initializer, which is executed when the database is formed, you may use a ...Seed() technique.... Therefore, I advise against using a DropCreate____ kind of initializer if you have a lot of data and plan to regularly change your models. Instead, I suggest seeding a modest s...

The type appears in two structurally incompatible initializations within a single LINQ to Entities query

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Entity Framework - Validation error on entity read at Azure

I created a test demo on my machine using your scripts, and it works well....In order to retest, I advise you to build a fresh Azure SQL database and utilise its connection string directly in the local....You may use the codes below for more information about my test demo:...IdentityModels.cs:...public class ApplicationUser : IdentityUser { pub...

The type appear in two structurally incompatible initializations within a single LINQ to Entities query

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C# Windows Form Application With Entity Framework Error: System.Data.Entity.Core.ProviderIncompatibleException

At this site, I was able to locate anything from the MYSQL BUGS Forum....I have to downgrade to: in order to get around it....Data from MySql 6.9.12 (6.10.7 and 8.0.11 exhibited the problem)...- 6.8.8 MySQL.Data.Entity (6.9.12 and 6.10.7 exhibited the problem)...MYSQL ERRORS...Furthermore, I must add "[DbConfigurationType(typeof(MySql.Data.Entity.M...