Author Archives: erictummers

About erictummers

Working in a DevOps team is the best thing that happened to me. I like challenges and sharing the solutions with others. On my blog I’ll mostly post about my work, but expect an occasional home project, productivity tip and tooling review.

Upgraded Windows 7 to 10 on my MacBook Early 2009

I still have my Early 2009 MacBook for my kids. It runs El Capitan and Windows 7 (bootcamp). Since the support for Windows 7 ended on January 14 2020 an upgrade was needed. Unfortunately the bootcamp 3 that comes with … Continue reading

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Bogus – testdata generator

Photo by Steve Harvey on Unsplash https://www.nuget.org/packages/bogus Creating testdata is not my favourite task. With bogus I can define the rules the data must adhere and generate as much data as I need. The rules are setup with fluent syntax … Continue reading

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EF core: entity cannot be tracked

We use EF core to store a bulk of data with an auto-number primary key. The auto-number is an Identity column in Sql Server. When inserting a large amount of records with related children we encounter this error: System.InvalidOperationException entity … Continue reading

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Computer setup COVID-19 update

I invested in a good computer setup for working-from-home a while ago. When the lockdown for COVID-19 came I was prepared. Still I made some changes and investments to go from one-day-a-week to fulltime working-from-home. Time for an update. No … Continue reading

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Logging from Automapper

We’ve been using automapper to convert objects for some time. Now I have the need for logging to help bugtracking. Below a short list of sources how we set this up. And now you’ll need a serviceprovider when unittesting. Thank … Continue reading

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