MongoDB is the popular NoSql database out there and is comparatively easy to use in conjunction with .Net and .Net Core with the official driver. MongoDB is not a relational database, but we can do a left outer join by using the $lookup aggregation stage. In this article we will see left outer join as Mongo $lookup Operator and with C# driver and LINQ syntax.

Docker is a full development platform to build, run, and share containerized applications. Docker Desktop is a outstanding way and an easy-to-install application for your Mac or Windows environment that enables you to start coding and containerizing. In this article we will discuss about Docker Desktop for Windows Systems.

The INNER JOIN term is used in RDMS when we want to fetch records from two or more tables. And it selects records that have matching values in both tables. It this article we will create Linq as well as Lambda-expression to fetch the records.

The ForeignKey attribute is applied to configure a foreign key in the relationship between two entities in EF 6 and EF Core. It overrides the default behavior. As per the default behavior, EF treats a property as foreign key property when its name matches with the primary key property of a related entity.

.NET Core version 3.0.0 was released September 23, 2019 which includes many improvements, including adding Windows Forms and WPF, adding new JSON APIs, support for ARM64, and improving performance across the board.

Using iText 7, we can define two passwords: a user password and an owner password. A pdf that is encrypted with an owner password can be opened by every one who receives the document. The owner password is there to define permissions (for instance: the document can be viewed, but not printed). If a pdf is encrypted using a user password, everybody who knows the user password can open the file. There is no username, only a user password.

In this article, we will discuss how to create a Custom Authentication Filter in ASP.Net MVC application. The Authentication Filter was introduced with MVC 5 and provides a great enhancement for authenticating an endpoint.

When consuming a REST API, understanding its various methods can be challenging for a developer. Swagger, also known as OpenAPI, solves the problem of generating useful documentation which allows us to obtain a good quality of documentation with a minimal time cost. Also, it gives benefits such as interactive documentation, client SDK generation, and API discoverability. The .NET Core implementation Swashbuckle is very easy to use Swagger by adding a couple of NuGet packages and modifying the Startup.cs.

Dependency Injection (DI) is a software design pattern that is a technique for achieving Inversion of Control (IoC) between classes and their dependencies. According to IoC, the direction of dependency within the application should be in the direction of abstraction, not implementation details. Dependency Injection (DI) makes loosely coupled application that provides greater maintainability, test-ability and also re-usability. ASP.NET Core has built-in support for dependency injection (DI).

API Versioning is very important and it should be implemented in every API application. In this artilcle, we will use different availeble options for versioning in .NET Core API Application.