The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘.NET’ Category

Notes a on a step by step .NET standard based stack of applications with a central core

Posted by jpluimers on 2020/10/14

The idea is to have a stack of things that can be later put into multiple micro-service pillars.

Helpful: enable “Track Active Item in Solution Explorer”:

  1. Start with an empty repository; add an origin
  2. Add .gitignore / .gitattributes appropriate for C#, for instance from, git commit it, and push it withgit push -u origin master.
  3. Add a blank solution using Creating a blank Visual Studio solution without a directory, and sln Format Version numbers and EmptyVisualStudioSolution
  4. Open the solution
  5. Add an “ASP.NET Core Web Application”
  6. Choose “API” in the list of ASP.NET templates, without Authentication or Docker support (let’s keep the balance bit simple enough for now)
  7. Run with Ctrl-F5, then confirm the SSL development certificate, and install it:

    Security Warning
    You are about to install a certificate from a certification authority (CA) claiming to represent:
    Windows cannot validate that the certificate is actually from "localhost". You should confirm its origin by contacting "localhost". The following number will assist you in this process:
    Thumbprint (sha1): 09EA054F 14D5D4CE 6B22C5F1 3E7EBDB5 F7583116
    If you install this root certificate, Windows will automatically trust any certificate issued by this CA. Installing a certificate with an unconfirmed thumbprint is a security risk. If you click "Yes" you acknowledge this risk.
    Do you want to install this certificate?
    Yes   No   
  8. Your browser now opens at a port for debugging: https://localhost:<port>/api/values, then tries to download the result as values.json.

    This is configured in Properties\launchSettings.json under "launchUrl": "api/values" (for the browser URL) and Controllers\ValuesController.cs under // GET api/values for the actual implementation.

  9. a








Have any service related stuff implement IHostedService, so it is easy to deploy it in all kinds of processes:

  • console to test
  • windows service
  • ASP.NET Core service
  • Linux host application

Background information at .NET: IHostedService « The Wiert Corner – irregular stream of stuff.




Posted in .NET, .NET Core, Development, Software Development | Leave a Comment »

Visual Studio Code on Mac and Linux can also use the mssql extension

Posted by jpluimers on 2020/09/29

Cool, this works in a Mac and Linux too: mssql extension for VS Code.



Posted in .NET, Database Development, Development, Software Development, SQL Server, Visual Studio and tools, Visual Studio Code | Leave a Comment »

Viewing a USB WebCam on Windows 10 without any fuzz

Posted by jpluimers on 2020/09/28

Windows 10 comes with a broken Camera viewer and before that, Windows 7 killed the one in Windows XP.

On a Mac you have the open source Quick Camera (which named QCamera before, seeViewing an USB camera on Mac OS X without mirroring and Capturing from a Magewell XI100USB on a Mac using OS X) at [WayBack] GitHub – simonguest/quick-camera.

For Windows 7, a long search initially revealed a lot of bloat-ware, but finally ended to these two both from the same author:

It is not open source (yet?), but since it is .NET, it is reasonable easy to see the innards.

Like QCamera, it does not require installation: just unzip and run. Enjoy!

Yes, I know there are Windows 10 workaround steps via Microsoft.CameraApp.App.ctor, but if you look at [WayBack] Win10 Home N – Camera App fails: System.IO.FileNotFoundException – Microsoft Community you will understand I did not apply them.

Similarly, when you install Skype from the app store, then sign-in, it will tell you that Skype is out of date.



Posted in .NET, Apple, Development, Mac OS X / OS X / MacOS, Power User, Software Development, Windows | Leave a Comment »

PlantUML – Visual Studio Marketplace

Posted by jpluimers on 2020/08/12

This and built-in markdown support made the switch to Visual Studio code from so much easier: [WayBack] PlantUML – Visual Studio Marketplace. was already on my list of tools to say good bye to: though a good project to show the versatility of the Electron Framework, over time – like Google Chrome – it had become a memory and CPU hog and a drag to use and update.

Integrating debuggers and other parts of the development life cycle involved too much fuzz, for which Visual Studio code (also known as vscode) was much easier from the start.

Probably Visual Studio code did not suffer from what the Dutch call Law of the handicap of a head start: it is much more responsive and versatile than Also the plugins – despite having come to the market later – feel way more mature in Visual Studio code than

Finally, the PlantUML support extension for vscode is so much nicer than in, it for instance supports live updating and in addition to local rendering, rendering through a PlantUML server (see [WayBack] GitHub – plantuml/plantuml-server: PlantUML Online Server).

Source code is at [WayBack] GitHub – qjebbs/vscode-plantuml: Rich PlantUML support for Visual Studio Code.

Read the rest of this entry »

Posted in Atom, Development, Power User, Software Development, Text Editors, Visual Studio and tools, Visual Studio Code | Leave a Comment »

Running Visual Studio Code on macOS from the terminal

Posted by jpluimers on 2020/07/30

For running Visual Studio Code from the terminal, you need to do a few extra steps as from Running Visual Studio Code on macOS: Get Visual Studio Code up and running on Mac (macOS):

Launching from the Command Line

You can also run VS Code from the terminal by typing ‘code’ after adding it to the path:

  1. Launch VS Code.
  2. Open the Command Palette (⇧⌘P) and type ‘shell command’ to find the Shell Command: Install ‘code’ command in PATH command.

macOS shell commands

  • Restart the terminal for the new $PATH value to take effect. You’ll be able to type ‘code .’ in any folder to start editing files in that folder.

Note: If you still have the old code alias in your .bash_profile (or equivalent) from an early VS Code version, remove it and replace it by executing the Shell Command: Install ‘code’ command in PATH command.

To manually add VS Code to your path:

cat << EOF >> ~/.bash_profile
# Add Visual Studio Code (code)
export PATH="\$PATH:/Applications/Visual Studio"

This is what the code command is and does:

$ which code
$ ls -alh `which code`
lrwxr-xr-x  1 jeroenp  admin    68B Apr 16 13:24 /usr/local/bin/code -> /Applications/Visual Studio
$ cat `which code`
#!/usr/bin/env bash
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for license information.

function realpath() { /usr/bin/python -c "import os,sys; print(os.path.realpath(sys.argv[1]))" "$0"; }
CONTENTS="$(dirname "$(dirname "$(dirname "$(dirname "$(realpath "$0")")")")")"
exit $?



Posted in Development, Software Development, Visual Studio and tools | Leave a Comment »

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