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.NET C# Java Javascript Exception

C# Blogs & News

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1

New in ASP.NET Core 3.0 - Generic Hosting Environment

In ASP.NET Core 3.0 the hosting environment changes to get more generic. Hosting is not longer bound to Kestrel and not longer bound to ASP.NET Core. This means you are able to create a host, that doesn't start the Kestrel web server and doesn't need to use the ASP.NET Core Framework. This is a small introduction post about the Generic Hosting Environment in ASP.NET Core 3.0. During ...
.net asp.net csharp visual-studio
12.12.2020 | 1852 27 | Jürgen Gutsch
1

How to share an Azure subscription in a team

We at Sevitec are moving more and more workloads for us or our customers to Azure. So the basic question needs an answer: How can a team share an Azure subscription? Be aware: This approach works for us. There might be better options. If we do something stupid, just tell me in the comments or via email - help is appreciated. Step 1: Create a directory We have a “company directory” with a ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
vor 20h | 21 0 | Code-Inside Blog
3

.NET Conf 2019

From September 23 to 25 the .NET Conf 2019, hosted by Microsoft, was running virtually on Twitch. Like last year the third day was full of talks done by the community. As well as last year, I also did a talk this year. I talked about the ASP.NET Core Health Checks and it went much better this time. There were no technical problems and because of my own live stream on twitch I'm a little bit ...
.net asp.net csharp visual-studio
27.09.2020 | 1285 26 | Jürgen Gutsch
7

How to run a legacy WCF .svc Service on Azure AppService

Last month we wanted to run good old WCF powered service on Azures “App Service”. WCF… what’s that? If you are not familiar with WCF: Good! For the interested ones: WCF is or was a framework to build mostly SOAP based services in the .NET Framework 3.0 timeframe. Some parts where “good”, but most developers would call it a complex monster. Even in the glory days of WCF I tried to avoid it ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.09.2020 | 103 1 | Code-Inside Blog
6

ASP.NET Core Health Checks

Since a while I planned to write about the ASP.NET Health Checks which are actually pretty cool. The development of the ASP.NET Core Health Checks started in fall 2016. At that time it was a architectural draft. In November 2016 during the Global MVP Summit in Redmond we got ask to hack some health checks based on the architectural draft. It was Damien Bowden and me who met Glen Condron ...
.net asp.net csharp visual-studio
20.08.2020 | 114 1 | Jürgen Gutsch
8

EWS, Exchange Online and OAuth with a Service Account

This week we had a fun experiment: We wanted to talk to Exchange Online via the “old school” EWS API, but in a “sane” way. But here is the full story: Our goal We wanted to access contact information via a web service from the organization, just like the traditional “Global Address List” in Exchange/Outlook. We knew that EWS was on option for the OnPrem Exchange, but what about Exchange ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.08.2020 | 104 1 | Code-Inside Blog
8

Getting the .editorconfig working with the .NET Framework and MSBuild

I demonstrated my results of the last post about the .editorconfig to the team last week. They were quite happy about the fact that the build fails on a code style error but there was one question I couldn't really answer. The Question was: Does this also work for .NET Framework? It should, because it is Roslyn who analyses the code. It is not any framework who does it. To try it out I ...
.net asp.net csharp visual-studio
24.07.2020 | 160 2 | Jürgen Gutsch
8

.NET Interactive in Jupyter Notebooks

Since almost a year I do a lot of Python projects. Actually Python isn't that bad. Python and Flask to build web applications work almost similar to NodeJS and ExpressJS. Similarly to NodeJS, Python development is really great using Visual Studio Code. People who are used to use Python know Jupyter Notebooks to create interactive documentations. Interactive documentation ...
.net asp.net csharp visual-studio
22.07.2020 | 199 1 | Jürgen Gutsch
4

Getting the .editorconfig working with MSBuild

UPDATE: While trying the .editorconfig and writing this post, I did a fundamental mistake. I added a ruleset file to the projects and this is the reason why it worked. It wasn't really the .editorconfig in this case. I'm really sorry about that. Please find this post to learn how it is really working. In January I wrote a post about setting up VS2019 and VSCode to use the .editorconfig . ...
.net asp.net csharp visual-studio
08.07.2020 | 235 2 | Jürgen Gutsch
10

Can a .NET Core 3.0 compiled app run with a .NET Core 3.1 runtime?

Within our product we move more and more stuff in the .NET Core land. Last week we had a disussion around needed software requirements and in the .NET Framework land this question was always easy to answer: .NET Framework 4.5 or higher. With .NET Core the answer is sligthly different: In theory major versions are compatible, e.g. if you compiled your app with .NET Core 3.0 and a .NET ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.07.2020 | 354 1 | Code-Inside Blog
3

Exploring Orchard Core - Part 1

Since I while I planned to try out the Orchard Core Application Framework. Back than I saw an awesome video where Sébastien Ros showed an early version of Orchard Core. If I remember right it was this ASP.NET Community Standup: ASP.NET Community Standup - November 27, 2018 - Sebastien Ros on Headless CMS with Orchard Core Why a blog series Actually this post wasn't planned to be a ...
.net asp.net csharp visual-studio
29.06.2020 | 172 1 | Jürgen Gutsch
8

[Off-Topic] 2020 will be a year full of challenges

This post really is off-topic. It seemed that 2020 started to get a good year. Live was kind of normal and I was looking forward to the upcoming events. Community events as well as family events. I was really looking forward to the MVP Summit 2020, to meet good friends again and to visit my favorite city in the US. But life wouldn't be life, if there where no changes and challenges. ...
.net asp.net csharp visual-studio
08.06.2020 | 291 2 | Jürgen Gutsch
11

SqlBulkCopy for fast bulk inserts

Within our product OneOffixx we can create a “full export” from the product database. Because of limitations with normal MS SQL backups (e.g. compatibility with older SQL databases etc.), we created our own export mechanic. An export can be up to 1GB and more. This is nothing to serious and far from “big data”, but still not easy to handle and we had some issues to import larger ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.06.2020 | 329 1 | Code-Inside Blog
6

Blazor for Office Add-ins: First look

Last week I did some research and tried to build a pretty basic Office Addin (within the “new” web based Addin model) with Blazor. Side note: Last year I blogged about how to build Office Add-ins with ASP.NET Core. Why Blazor? My daily work home is in the C# and .NET land, so it would be great to use Blazor for Office Addins, right? A Office Add-in is just a web application with a ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
30.04.2020 | 359 2 | Code-Inside Blog
7

Escape enviroment variables in MSIEXEC parameters

Problem Customers can install our product on Windows with a standard MSI package. To automate the installation administrators can use MSIEXEC and MSI parameters to configure our client. A simple installation can look like this: msiexec /qb /i "OneOffixx.msi" ... CACHEFOLDER "D:/OneOffixx/" The “CACHEFOLDER” parameter will be written in the .exe.config file and our program ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
28.03.2020 | 342 1 | Code-Inside Blog
5

TLS/SSL probelems: 'Could not create SSLTLS secure channel'

Problem Last week I had some fun debugging a weird bug. Within our application one module makes HTTP requests to a 3rd party service and depending on the running Windows version this call worked or failed with: 'Could not create SSLTLS secure channel' I knew that older TLS/SSL versions are deprecated and that many services refuse those protocols, but we still didn’t finally ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.03.2020 | 453 5 | Code-Inside Blog
9

Accessibility Insights: Spot accessibilities issues easily for Web Apps and Windows Apps

Accessibility Accessibility is a huge and important topic nowadays. Keep in mind that in some sectors (e.g. government, public service etc.) accessibility is a requirement by law (in Europe the European Standards EN 301 549). If you want to learn more about accessibility in general this might be handy: MDN Web Docs: What is accessibility? Tooling support In my day to day job for ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.02.2020 | 429 4 | Code-Inside Blog
8

Using the .editorconfig in VS2019 and VSCode

In the backend developer team of the YOO we are currently discussing coding style guidelines and ways to enforce them. Since we are developer with different mindsets and backgrounds, we need to find a way to enforce the rules in a way that works in different editors too. BTW: C# developers often came from other languages and technologies before they started to work with this awesome ...
.net asp.net csharp visual-studio
13.01.2020 | 525 3 | Jürgen Gutsch
9

T-SQL Pagination

The problem This is pretty trivial: Let’s say you have blog with 1000 posts in your database, but you only want to show 10 entries “per page”. You need to find a way how to slice this dataset into smaller pieces. The solution In theory you could load everything from the database and filter the results “in memory”, but this would be quite stupid for many reasons (e.g. you load much more ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
31.12.2019 | 703 13 | Code-Inside Blog
4

ASP.NET Hack Advent Post 24: When environments are not enough, use sub-environments!

ASP.NET Core knows the concept of runtime environments like Development, Staging and Production. But sometimes those environments are not enough. To solve this, you could use sub-environments. This is not a built-in feature, but is easily implemented in ASP.NET Core. Thomas Levesque describes how: ASP.NET CORE: WHEN ENVIRONMENTS ARE NOT ENOUGH, USE SUB-ENVIRONMENTS! ...
.net asp.net csharp visual-studio
24.12.2019 | 629 3 | Jürgen Gutsch
4

ASP.NET Hack Advent Post 23: Setting up Azure DevOps CI/CD for a .NET Core 3.1 Web App hosted in Azure App Service fo...

After you migrated your ASP.NET Core application to a Linux based App Service, you should setup a CI/CD pipeline ideally on Azure DevOps. And again it is Scott Hanselman who wrote a great post about it: Setting up Azure DevOps CI/CD for a .NET Core 3.1 Web App hosted in Azure App Service for Linux So, read this post to learn more about ASP.NET Core on Linux. Blog: ...
.net asp.net csharp visual-studio
23.12.2019 | 589 1 | Jürgen Gutsch
6

ASP.NET Hack Advent Post 22: User Secrets in Docker-based .NET Core Worker Applications

Do you want to know how to manage the user secrets in Docker based .NET Core Worker applications? As a part of the Message Endpoints in Azure series Jimmy Bogard is writing an awesome blog post about this. User Secrets in Docker-based .NET Core Worker Applications Jimmy Bogard is chief architect at Headspring, creator of AutoMapper and MediatR, author of the MVC in Action books, ...
.net asp.net csharp visual-studio
22.12.2019 | 607 3 | Jürgen Gutsch
2

ASP.NET Hack Advent Post 21: Moving an ASP.NET Core from Azure App Service on Windows to Linux by testing in WSL and ...

Scott Hanselman again writes about ASP.NET Core applications on Linux. This time the post is about moving an ASP.NET Core application from a Windows to a Linux based App Service: Moving an ASP.NET Core from Azure App Service on Windows to Linux by testing in WSL and Docker first Again this is one of his pretty detailed and deep dive posts. You definitely have to read it, if you want to ...
.net asp.net csharp visual-studio
21.12.2019 | 548 1 | Jürgen Gutsch
5

ASP.NET Hack Advent Post 20: The ultimate guide to secure cookies with web.config in .NET

For the todays ASP.NET Hack Advent, I found a awesome post about cookie security. This post is the latest part of a series about ASP.NET Security. Cookie security is important to avoid cookie hijacking via cross-site scripting and something like this. The ultimate guide to secure cookies with web.config in .NET This post was written by Thomas Ardal, who is a speaker, software ...
.net asp.net csharp visual-studio
20.12.2019 | 596 0 | Jürgen Gutsch
7

ASP.NET Hack Advent Post 19: Migrate a real project from ASP.NET Core 2.2 to 3.1

Because I got a lot of questions about migrating ASP.NET Core applications to 3.1, I will introduce another really good blog post about it. This time it is a post about a real project that needs to be migrated from ASP.NET Core 2.2. to 2.1. He is writing about how to update the project file and about what needs to be changed in the Startup.cs: Migration from Asp.Net Core 2.2 to 3.1 — Real ...
.net asp.net csharp visual-studio
19.12.2019 | 587 0 | Jürgen Gutsch
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