ASP.NET Core, Blazor, .NET, Azure, SharePoint, IoT
Some properties of model classes come as enums and we want to show enum values in select list when edit form is opened. Sometimes we want enum element names but sometimes we want to use custom names or even translations. his blog post demonstrates how to get enum element names to select list on ASP.NET Core.
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Entity Framework Core 5.0 comes with SQL-based brother to ToString() method for LINQ-queries. This method is called ToQueryString() and it returns provider-specific SQL without connecting to database server. This blog post shows how ToQueryString() method works.
Read moreUsing query string in controller unit tests is actually easy until we don’t need anything more advanced. We can buld up a string with query parameters and go with it. But what if things get more complex and we need encoding or multiple values? Here’s how to build safe query string for ASP.NET COre controller unit tests.
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Visual Studio database projects have been one of my important tools since Visual Studio 2010. Database projects were not easy to use with build servers ten years ago. Today things are different. It’s super easy to use database projects to update staging and live databases from Azure build and release pipelines. This blog post shows how to do it.
Read moreUsing Azure fluent API-s it is easy to create storage accounts and blob containers. After experimenting with fluent API of Azure storage I found it to be good match for multitenant web applications where tenant files are held on Azure blob storage. I was surprised how clean and short code I got using fluent API. Here’s my overview of fluent API for Azure storage with some code samples I wrote.
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I discovered lately one killer feature of SQL Server – keeping data and log files on Azure blob storage. There are scenarios where we may want to go with blob storage instead of buying and building up our own stable and reliable storage. This blog post introduces how MSSQL data and log files work on Azure blob storage.
Read moreMy previous blog post Querying MySQL from SQL Server using linked server introduced how to link MySQL database to MSSQL and how to write queries that gather data from local and linked server. This blog post demonstrates how to get data mixed from those sources to Entity Framework Core.
Read moreSQL Server has interesting feature calles Linked Servers. It’s about linking other databases to SQL Server and using their data like it’s local. There are many powerful open-source systems written on PHP and they are mostly using MySQL as database. This blog post shows how to link MySQL database to SQL Server and how to use linked server in SQL queries.
Read moreMy last bold statement was that we don’t need custom unit of work and repository classes with Entity Framework Core. One issue remained unsolved and it was querying part of repositories (yeah, those custom querying methods). After some experiments to get querying interface of repositories to DbContext I worked out something that I kind of like. I managed to make DbContext to work like classic unit of work that hosts repository instances. Here’s my experiment and the solution I worked out.
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After getting done with Blazor desktop applications I tried to build kind of hybrid Blazor WebAssembly application that can run on desktop and in web equally. Although I failed to make it as one single application, I still got it work with a little different architecture. And what’s best – Blazor desktop applications run already now as self-contained executables. Here’s my experiment.
Read moreBlazor on desktop is one of latest hot topics and .NET Conf: Focus on Blazor only added more fuel to fire. Blazor seems to come everywhere and it’s unstoppable. One of interesting desktop experiments is WebWindow by Steve Sanderson. It’s cross-platform component to make Blazor WebAssembly applications run on desktop. Let’s take a closer look at WebWindow and Blazor on desktop.
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Surface Neo and Surface Duo are new devices by Microsoft, planned to launch for holidays season this year. Surface Neo runs Windows and Surface Duo is based on Android. For Surface Duo there’s already preview tooling and SDK available by Microsoft. Here’s the introduction to Surface Duo development, tools and patterns.
Read moreMultitenant wep applications detect current tenant usually by URL checking name of first level folder or subdomain. Usually tenants are defined by subdomain as it is easier to distribute them over data center, cloud services or hosting accounts. This blog post demonstrates how to build Azure DNS service client to create DNS records for multitenant application subdomains.
Read moreAfter getting fake authenticated user to ASP.NET Core integration tests I made step further and introduced the way to use different user accounts. Using multiple users and roles instead of one test users is very common scenario in web applications. During my carreer I have seen only few business applications that doesn’t use different roles. This blog post demonstrates how to inject users dynamically to ASP.NET Core integration tests.
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Over years I have written many blog posts about C# and .NET that demonstrate also how things work internally and what C# compiler produces from the code we write. I have called these chapters usually as “Behind the compiler”. This post is growing list of my writings covering interesting findings about C# compiler work.
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Microsoft made very interesting announcements at .NET Conf: Focus on Blazor online conference. There are many great things are happening and Blazor is also making a fast progress on finding its way to mobile and desktop. Here’s the short overview of what’s happening and what’s coming next.
Read moreAfter getting done with fake users for ASP.NET Core controller unit tests I wanted to make fake users available also in integration tests. It took some inventing and hacking but I made it work. This blog post shows you how to create fake users for ASP.NET Core integration tests and write effective extension methods to keep integration tests shorter.
Read moreI think most of ASP.NET Core applications have authentication enabled. When writing unit tests for controllers we have one set of tests that need authenticated user and other set of tests that need anonymous user. Faking User property of controller is a little bit tricky. This blog post shows how to do it.
Read moreLast year I had some projects where I had to embed Power BI reports to ASP.NET Core applications. There were easy cases that solved practically with copy-paste but I also had more complex situation where server-side code was needed because application uses custom authentication instead of Azure AD. This blog post covers both scenarios for embedding Power BI reportis to ASP.NET Core applications.
Read moreIn one of my projects I have some ASP.NET Core views that display multiple tables with reporting data. Data comes from SQL Server views and stored procedures and these can be modified in database without deploying application to server again. I came out with very common solution in ASP.NET Core to solve this problem using raw SQL commands and shared views for DataTable and DataSet. Here’s what I did.
Read moreI have never seen a real-life project where object-relational mapper generates 100% of needed SQL. There have always been those special cases when custom SQL commands are needed. In this post I will demonstrate how to run custom SQL commands in Entity Framework Commands and how to read data from database without DbSet and query types.
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