LINQKit
LINQ to DB
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| LINQKit | LINQ to DB | |
|---|---|---|
| 6 | 20 | |
| 1,563 | 2,856 | |
| - | 0.8% | |
| 3.5 | 8.9 | |
| 3 months ago | 6 days ago | |
| C# | C# | |
| MIT License | MIT License |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
LINQKit
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What your hidden nuget gems ?
I also enjoy LinqKit (mentioned here). Really cool way to build a LINQ predicate.
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EF Core Include where
I would suggest to install LINQKit Configure DbContextOptions: cs builder .UseSqlServer(connectionString) .WithExpressionExpanding(); // enabling LINQKit extension
- Як я мігрував з EF 6 до EF Core 5
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Build dynamic Linq filters (aka. where() predicates)
Nice! At work we do something similar, but we use the predicate builder of linqkit: https://github.com/scottksmith95/LINQKit
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Expression<Func<T>> usage in filters and sorting
To answer your other question, you can use something like PredicateBuilder to compose predicates for use in Where and OrderBy methods. To define your OrderBy with a boolean (or string or enum) to denote the ordering, you would have to make an extension method like so:
LINQ to DB
- Upserting complex data models from an API into EF Core entities
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LiteDB: A .NET embedded NoSQL database
Before checking this out, people might want to take a look through the issues and pull requests of which there are 500+ and 50+ respectively [1]. I was really optimistic about this project and it was headed in a great direction, but it's not in a production ready state, and it seems that the main guy behind it has decided to move onto other things. It's been about a year since there was any significant activity.
I just mention this because a lot of these little issues might only become more apparent after integrating the db into your project and so it can be a bit annoying. I ended up swapping to Linq2DB [1]. It's something, more or less, similar offering an ORM/LINQ type system as well as the ability to also use direct SQL if desired. But the neat thing is that it also uses a standardized API for the LINQ query language, so you can do things like swap from SQLite to PostgreSQL in one* line of code, so long as you're not using any provider specific extensions.
[1] - https://github.com/mbdavid/LiteDB
[2] - https://github.com/linq2db/linq2db
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Flyweight: An ORM for SQLite
I had a positive experience with Linq2db? https://github.com/linq2db/linq2db
I mention because I had something of the opposite experience with it. It not only ended up yielding the correct queries, but I saw a significant increase in performance. And the neat thing about it, beyond ORM and linq-to-sql, is a common interface amongst providers - so you can do things like swap from SQLite to Postgres with 1 line* of code, so long as you're not using provider specific extensions.
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.NET 6 - ORM vs Stored Procedures - Azure Functions + SQL Databases
Temporary tables are covered by linq2db. But better to show Stored Proc maybe your final query just needs several CTE which also supported by linq2db.
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LINQ to SQL
check this out as an alternative... https://github.com/linq2db/linq2db
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Expression trees for LINQ
My learning path was supporting linq2db, not short way. StackOverflow was original source to find something like, how to do if operator in Expression Tree, how to throw exception in Expression Tree, how to build dynamic filter, ect.
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Dapper is it worth using now with the improvements in EF in dotnet 6?
Checkout linq2db No need for Dapper or EF with this library. I wouldn't want to miss it.
- What is the best PostgreSQL ORM tool for use in a .NET Framework 4.7 application?
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SchemaTypist: Entity generator for Dapper and SqlKata
Why not linq2db? Faster than Dapper and has LINQ support.
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EF Core is good for most things.
Probably you can understand why linq2db was born 15 years ago
What are some alternatives?
Linq.Expression.Optimizer - System.Linq.Expression expressions optimizer. http://thorium.github.io/Linq.Expression.Optimizer
Dapper - Dapper - a simple object mapper for .Net [Moved to: https://github.com/DapperLib/Dapper]
dynamic-linq-query-builder - A truly generic and dynamic linq query builder to compliment jQuery QueryBuilder and other dynamic linq query generation needs
Entity Framework - EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.
System.Linq.Dynamic.Core - The .NET Standard / .NET Core version from the System Linq Dynamic functionality.
MongoDB Repository pattern implementation
Dapper Extensions - Dapper Extensions is a small library that complements Dapper by adding basic CRUD operations (Get, Insert, Update, Delete) for your POCOs. For more advanced querying scenarios, Dapper Extensions provides a predicate system. The goal of this library is to keep your POCOs pure by not requiring any attributes or base class inheritance.
TypeORM - ORM for TypeScript and JavaScript. Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, SAP Hana, WebSQL databases. Works in NodeJS, Browser, Ionic, Cordova and Electron platforms.
RepoDb - A hybrid ORM library for .NET.
Fluent NHibernate - Fluent NHibernate!
NHibernate - NHibernate Object Relational Mapper