What are the most important factors to consider while deciding between various ORMs?

Code First Migrations for a custom NuGet package can't be executed from main application

I made a module that will be a part of the main MVC3 web application. The module is included as a NuGet package, which may be used to install and remove it. Code First, EF >= 4.3 is used by both the main site and the module....Making the packaging Since every feature of my other MVC3 site is contained inside an area, I just need to bundle the libra...

Sharing the Users table between an IdentityDbContext, and a main application DbContext

Why do you want to use two different...DbContext... s? It would be simpler to have a single context for both your business entities and ASP.NET identity data:...public class DatabaseContext : IdentityDbContext<UserInfo> { public virtual DbSet<Entity> Entities { get; set; } // Your business entities public DatabaseContext() : base("...

Entity Framework relationships between different DbContext and different schemas

The two primary aims I have are Member and Guild. A Guild may be owned by one Member, and a Guild may have more than one Member....I have a distinct DbContext and class library for the Members class. I want to utilize this class library across several projects, thus I changed the database schema to "acc" to make it easier to distinguish between the...

Entity Framework - how to query over multiple tables and choose columns to display

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How to choose DbConfigurationType programatically?

I possess...DbContext... :...[DbConfigurationType(typeof(MySqlEFConfiguration))] public class MyDbContext : DbContext { public DbSet<MyClass> MyClasses { get; set; } } ...What if I wish to use another device instead?...DbConfigurationType... based on the value of AppSettings?...I do this by changing the value of AppSettings to...MySQL... to ..

LinQ query Simple Where clause and many filter criteria

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Run different database types in different environments in dotnet core 2

I suppose I've come up with a wonderful technique for you to accomplish it. To add your SQLSite DbContext, utilise the ...ConfigureDevelopmentServices... starting convention. So, for a simple illustration, consider the following:...// Production "like" ConfigureServices public void ConfigureServices(IServiceCollection services) { // Use Sql Ser...

Why is my data context class missing from the drop-down when I choose Add Controller?

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What exactly is the difference between ORM and micro ORM?

They are only various instruments. The key goal of micro-ORMs is to ...remove... a lot of layers that an awful lot of data access code ...won't need... - basically providing a minimal API surface and trying to balance that by offering the performance benefits that can come from simplicity. Examples of features that you may not expect to see in a mi...

Select max as second criteria with Linq

I'm attempting to get all rows with a certain field and its maximum value....To clarify my scepticism, I'll provide a model as an example....class model { [Key] [Column(Order=0)] public int Key { get; set; } [Key] [Column(Order=1)] public int Revision { get; set; } public string OtherStuff { get; set; } } ...O...