.NET

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Building and using advanced .NET Core CLI global tools

Handling commands, arguments and options in .NET CLI global tool application
 
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Once .NET Core 2.1 SDK introduced support for global tools I wrote a brief article on how to create a simple global CLI tool in .NET Core Building advanced .NET Core Global Tool using CommandLineUtils package. While this is fair enough informations to kick-start you project and create a simple global tool to use from the command line, I found out there is more to it in order to have the tool built, published, distributed and used especially when you are dealing with real-life applications that need to have a CLI as a part of the solution. ...read more

Seeding data in EF Core using SQL scripts

Another way of seeding data in EF Core
 
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Not so while ago I wrote an article on Seeding data with Entity Framework Core using migrations. This approach relies on EF Core migrations to ensure seeding of specific data is done only once using __EFMigrationsHistory table to track structural migrations as well as data seeding migrations. In large number of cases this approach works just fine and you do not need to do any adjustments or add any additional tables, just use migrations mechanism out of the box...read more

Seeding data with Entity Framework Core using migrations

Using EF Core migrations to seed the data
 
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As much as it is important for testing the functionality of the application, data seeding can also be used to pre-load some values like lookups not only to development and test environment but also to populate these values in production as well. Seeding of data can be done in several ways and in this article I will go through two ways of seeding data. Both of them have their pros and cons and it is up to you to pick the way you want to have your data pre-seeded in your application database. ...read more

Using Polly for retrial policies with Autofac

Confguring and using Polly with with pretty much anything
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Some time ago I wrote an article which explains how to Increase service resilience using Polly and retry pattern in ASP.NET Core. This is a great way how to easily implement retrials when using .NET Core dependency injection, but in case of using Autofac with .NET Framework 4.x you do not have many out of the box solutions. However, Polly as a library is not specifically built for .NET Core and using it with other dependecy injection packages such as Autofac is fairly easy...read more

Combining multiple Swagger API endpoints in a single UI

Multiple REST API microservices endpoints in a single Swagger UI
 
 
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Shifting from traditional monolithic application architecture to micorservices can solve bunch of problems and issues monolith application application design approach introduces, but on the other hand it has it's own drawbacks, although number of drawbacks compared to number of problems it solves is a lot greater so it makes sense to take a path in process of moving from monolithic to micorservices. On of the steps to move to micorservices is to physically have your services running as individual processes...read more

Overwriting configuration values with environment variable in ASP.NET Core

Using environment specific variables to overwrite configuration values in ASP.NET Core
 
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It is obvious that no matter what is the size and complexity of your application, configuration values on your local development machine and the environment where the application is going to run will be different. To avoid any hard-coding and recompilation of your code, the most common practice is to store application and environment specific values to configuration files...read more

Mocking System.IO filesystem in unit tests in ASP.NET Core

Testable filesystem operations in ASP.NET Core and C#
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Working with file system operations like creating or deleting files and directories if quite often part of applications flow. Both .NET and .NET Core come with great out of the box classes and methods to achieve this. These classes and methods are part of System.IO name space, but unfortunately both .NET and .NET Core implementations are the same and they use static classes and method to manipulate files and directories on the host file system. ...read more

Using options pattern in MVC5 legacy applications with web.config

Simple implementation of options pattern in .NET Framework 4.x legacy applications
 
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The story behind New descendant of .NET Framework, .NET Core, comes with one really useful pattern for reading and using configuration files. It comes with out of the box support for JSON configuration files which are much more readable and give much greater freedom and flexibility on how to organize your settings...read more

Ignoring properties from controller action model in Swagger using JsonIgnore

Excluding properties from Swagger in controller action input model using Newtonsoft.Json package
 
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While designing the REST API, quite often you may find yourself in a situation where the data can be provided from multiple sources, like route, query string or POST/PUT payload. While that might not be a big problem, it may force you to redesign your models and most likely you will end up with keeping your original DTOs but then designing a new model in your application services layer just to have all your data from different sources in one place when you are passing it to the service method. Resolving multiple sources custom binding ...read more

JavaScript

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SQL/T-SQL

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Umbraco CMS

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PowerShell

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