Creating simple shoutbox using ASP.NET Core Razor Pages

ASP.NET Core 2 comes with Razor Pages that allow developers to build simple web applications with less overhead compared to MVC. The emphazise is on the word “simple” as Razor Pages doesn’t come with patterns suitable for bigger and more complex applications. For this we have MVC that is flexible enough to build applications that will grow over years. This blog post uses simple shoutbox application to illustrate how to build applications using Razor Pages.

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TemperatureStation: My Windows 10 IoT Core solution on Github

I published to Github sample temperature measuring solution that runs on Windows 10 IoT Core and that is built on Visual Studio. Source code with basic documentation is available too. This demo project is there to give some starting point to those who are visiting my Brewing Eisbock with Raspberry PI and Windows 10 IoT sessions in different conferences.

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Making Entity Framework 7 and Azure Data Sync work together

I have local database where I insert some data and I want this data to be available also in cloud. As a lazy guy I don’t want to synchronize data manually. After setting up local and cloud databases I activated Azure Data Sync to just find out that it conflicts with EF7 insert and update queries. As I don’t have many tables and my database is pretty small I invented simple workaround.

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Beer IoT: Visualizing sensors data using Power BI

We are eager to try out our beer cooling solution and we want to see it in action. We want to visualize our data and keep eye on temperature of cooling beer. Before doing anything more complex like building web or mobile app we make a quick shortcut and bring our data to web, desktop and mobile. This post is about Power BI in action.

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Beer IoT: Using Stream Analytics to save data from IoT Hub to SQL database

When cooling beer we want to store history of temperatures for two reasons. First, it gives us valuable history data for next cooling sessions. As a second thing we can ask measurements when we temporarily lost connection with IoT Hub. In this posting we make some analyzis and then build up database for our beer cooling solution.

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Using Visual Studio database post-deployment scripts in practice

Visual Studio database projects support database post-deployment scripts you can use to make additional modifications to database or to insert some test data. In my work I use database projects and post-deployment scripts very often. In this posting I will introduce you how to use post-deployment scripts to make dealing with database and data easier for developers.

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Using Visual Studio database projects in real life

Visual Studio database projects are good to support software development. I have successfully used database projects for years and I think it’s time to share my experiences also to global developers audience. In this posting I will introduce you how to effectively use database projects so developers are working with up-to-date schema and test data all the time.

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Creating dynamic pivot reports on SQL Server

In one of my current projects I have some pivot reports that show count of issues in different states. Grouping depends on report. States are dynamic – admins can define new states and save them to states table. This means that I cannot hardcode names of states to queries. Instead I need dynamic pivots. In this posting I will show you how to write reporting procedures that offer dynamic pivoting capabilities.

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The selected database contains foreign keys that create a cycle

You may get the following error when creating data scripts with MSSQL 2008: The selected database contains foreign keys that create a cycle. Publishing data only is not supported for databases with cyclical foreign key relationships. This problem is caused by self-referencing tables and it is given even if you don’t export data from one of such tables. Here is simple and very dirty solution.

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ASP.NET MVC: How to implement invitation codes support

Last Christmas I blogged about how to make ASP.NET MVC users authorized only if they have profiles created. This works well on public sites where everybody can be user. Sometimes we don’t want to let all users to our system even when they were correctly authenticated by some authentication service. In this blog post I will show you how to create authorization attribute that you can use to make authenticated users insert their access code if it is their first visit to site.

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