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Code-Inside Blog

Blog über die moderne Webentwicklung mit ASP.NET MVC, Javascript & HTML5 auf der Microsoft Plattform.

Über den Autor

Robert Mühsig ist Webentwickler bei der T-Systems Multimedia Solutions GmbH in Dresden und wurde von Microsoft mit dem ASP.NET MVP Award ausgezeichnet.

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Themen des Autors

.net allgemein asp.net asp.net-mvc azure azure-ad azure-websites bootstrap browser chrome cloud csharp css dart entity-framework fix games git github google howto howtocode html5 icons iis javascript jquery metro nosql nuget oauth open-source oss owin powershell ravendb rest rss security tfs twitter ui veranstaltungen visual-studio waad web webdeploy windows-8 windows-azure windows-phone-7

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News und Artikel von Code-Inside Blog

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

... more and more stuff in the .NET Core land. Last week we had ... 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: ... compiled your app with .NET Core 3.0 and a .NET Core runtime 3.1 is the only ... good part With .NET Core we could ship the framework ... with the next .NET Core versions. Hope this helps!

01.07.2020 | 86 1

SqlBulkCopy for fast bulk inserts

... doing it. SqlBulkCopy to the rescure: After my failed attempt to tame our EF implementation I discovered the SqlBulkCopy operation. In .NET (Full Framework and .NET Standard!) the usage is simple via the “SqlBulkCopy” class. Our importer looks more or less like this: using (var scope new TransactionScope(TransactionScopeOption.RequiresNew, TimeSpan.FromMinutes(30), ...

01.06.2020 | 180 1

Blazor for Office Add-ins: First look

... (within the “new” web based Addin model) ... Office Add-ins with ASP.NET Core. Why Blazor? ... the C# and .NET land, so it ... is just a web application with a ... from the real web . What (might) ... What won’t work: Web Assembly (if I ... - what about Web Assembly? Well… Blazor Web Assembly is still ... long time: Blazor Web Assembly seems not ... Web Assembly installs a ... Web View. My experience ... Web Assembly, so… time ...

30.04.2020 | 188 2

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 ...

28.03.2020 | 230 1

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

... call worked without any issues on a Windows 10 1903 machine The HTTPS call didn’t work on a Windows 7 SP1 (yeah… customers…) and a Windows 10 1803 machine. Our software uses the .NET Framework 4.7.2 and therefore I thought that this should be enough. Root cause Both systems (or at least they represents two different customer enviroments) didn’t enable TLS 1.2. On Windows 7 (and I ...

01.03.2020 | 332 4

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

... general this might be handy: MDN Web Docs: What is accessibility? Tooling support In my day ... accessibility issues in our Windows and Web App. I knew that there must be some good tools for web development, but was not sure about Windows app support. ... (or Edge) as well to check web apps. The extension is similar to the ... used the Chrome version for our Web Application as well. If you use or used ...

01.02.2020 | 323 4

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 ...

31.12.2019 | 611 9

Did you know that you can build .NET Core apps with MSBuild.exe?

... .NET Core 3.0. Because ... .NET Core, but some ... “.NET Framework 4.7.2”, but ... .NET Core 3.0 applications. ... .NET Core 3.0 app ... .NET Framework 4.7.2 app) ... .NET Framework 4.7.2 based ... .NET Core based applications, ... .NET Core application from ... .NET Framework based applications ... .NET Core: Try to ... .NET Core applications and ... ASP.NET Core applications: The ... web .config file - ... web .config file is ... IIS . ...

01.12.2019 | 246 0

IdentityServer & Azure AD Login: Unkown Response Type text/html

The problem Last week we had some problems with our Microsoft Graph / Azure AD login based system. From a user perspective it was all good until the redirect from the Microsoft Account to our IdentityServer. As STS and for all auth related stuff we use the excellent IdentityServer4. We used the following configuration: services.AddAuthentication() ...

13.10.2019 | 363 2

Enforce Administrator mode for builded dotnet exe applications

... "false" / Step by Step for .NET Framework apps Create your WPF, WinForms or Console project ... are done. Step by Step for .NET Core apps The same approach works more or less for .NET Core 3 apps: Add a “application ... PropertyGroup OutputType Exe /OutputType TargetFramework net coreapp3.0 /TargetFramework ApplicationManifest app.manifest /ApplicationManifest /PropertyGroup ...

30.09.2019 | 211 1

Check installed version for ASP.NET Core on Windows IIS with Powershell

... you have a ASP.NET Core application without the bundled ASP.NET Core runtime (e.g. ... your ASP.NET Core application on ... by IIS . General approach ... .NET Core hosting bundle ... .NET Core Runtime (and ... .NET runtime 2.2.1), still ... .NET Core 2.X applications) ... “ASP.NET Core seems to ... .NET Core.*Windows Server Hosting" ... .NET Core Runtime: _ ... ".NET Core Runtime (MiniumVersion ... .NET Core runtime on ...

01.09.2019 | 457 8

SQL Server, Named Instances & the Windows Firewall

... problem “Cannot connect to sql\instance. A net work-related or instance-specific error occurred while ... to allow remote connections. (provider: SQL Net work Interfaces, error: 26 - Error ... needs - use this command: net sh advfirewall firewall add rule name ... two additional ports: net sh advfirewall firewall add rule name ... with this command: net sh advfirewall firewall add rule name ...

01.08.2019 | 352 5

Jint: Invoke Javascript from .NET

... dreamed to use Javascript in your .NET application there is a simple way: ... use from any .NET implementation (Xamarin, .NET Framework, .NET Core). Just use the NuGet package ... Why should integrate Javascript in my application? In our product “OneOffixx” we use Javascript as a scripting language ... pro arguments for Javascript : It’s a ... execute some simple Javascript and returen the ...

01.07.2019 | 272 0

Build Windows Server 2016 Docker Images under Windows Server 2019

... server side stack in a Docker image. Windows Server 2016 situation: We rely on Windows Docker Images, because we still have some “legacy” parts that requires the full .NET Framework, thats why we are using this base image: FROM microsoft/aspnet:4.7.2-windowsservercore-ltsc2016 As you can already guess: This is based on a Windows Server 2016 and besides the “legacy” parts of ...

01.06.2019 | 396 5

Update OnPrem TFS 2018 to AzureDevOps Server 2019

We recently updated our OnPrem TFS 2018 installation to the newest release: Azure DevOps Server The product has the same core features as TFS 2018, but with a new UI and other improvements. For a full list you should read the Release Notes. *Be aware: This is the OnPrem solution, even with the slightly missleading name “Azure DevOps Server”. If you are looking for the Cloud solution ...

01.05.2019 | 424 4

Load hierarchical data from MSSQL with recursive common table expressions

Scenario We have a pretty simple scenario: We have a table with a simple Id ParentId schema and some demo data in it. I have seen this design quite a lot in the past and in the relational database world this is the obvious choice. Problem Each data entry is really simple to load or manipulate. Just load the target element and change the ParentId for a move action etc.. A more complex ...

01.04.2019 | 326 0

Check Scheduled Tasks with Powershell

Task Scheduler via Powershell Let’s say we want to know the latest result of the “GoogleUpdateTaskMachineCore” task and the corresponding actions. All you have to do is this (in a Run-As-Administrator Powershell console) : Get-ScheduledTask where TaskName -EQ 'GoogleUpdateTaskMachineCore' Get-ScheduledTaskInfo The result should look like this: LastRunTime : ...

27.02.2019 | 724 36

Office Add-ins with ASP.NET Core

... powered by HTML, Javascript and CSS . The cool stuff is, that ... Studio Template: Urgh… ASP.NET Because of the “new” nature of ... templates still uses ASP.NET and not ASP.NET Core. ASP.NET Core Sample If you want to use ASP.NET Core, you might ... look at my ASP.NET Core-sample. It is ... Warning: In the “ASP.NET ”-Offce-Addin-development world there ... be working with ASP.NET Core projects. The ...

01.02.2019 | 455 0

How to use TensorFlow with AMD GPU's

How to use TensorFlow with AMD GPU’s Most machine learning frameworks that run with a GPU support Nvidia GPUs, but if you own a AMD GPU you are out of luck. Recently AMD has made some progress with their ROCm platform for GPU computing and does now provide a TensorFlow build for their gpus. Since I work with tensorflow and own a AMD GPU it was time to give it a try. I stumpled upon these ...

05.12.2018 | 755 29

Make your WCF Service async

Oh my: WCF??? This might be the elephant in the room: I wouldn’t use WCF for new stuff anymore, but to keep some “legacy” stuff working it might be a good idea to modernize those services as well. WCF Service/Client compatibility WCF services had always close relationships with their clients and so it is no suprise, that most guides show how to implement async operations on the server ...

03.12.2018 | 733 0

HowTo: Run a Docker container using Azure Container Instances

Azure Container Instances There are (at least) 3 diffent ways how to run a Docker Container on Azure: Using the Web App for Containers Using Azure Kubernetes Service (AKS) Using Azure Container Instances In this blogpost we will take a small look how to run a Docker Container on this service. The “Azure Container Instances”-service is a pretty easy service and might be a good first ...

13.11.2018 | 435 3

How to fix ERR_CONNECTION_RESET & ERR_CERT_AUTHORITY_INVALID with IISExpress and SSL

... environment for a web site that uses ... & IIS Express related certs ... IIS Express? Well - ... IIS Express certs I ... IIS Express installation and ... IIS Express was working ... IIS Express at least ... IIS Express certs in ... IIS Express via the ... IIS Express via the ... “Iis ExpressAdminCmd.exe” - this ... IIS Express bitness settings. ... “net sh” from a ... net sh), e.g.: net sh http delete ... net sh http add ... net sh tool, but ... Iis ...

01.11.2018 | 1359 10

Be afraid of varchar(max) with async EF or ADO.NET

Last month we had changed our WCF APIs to async implementations, because we wanted all those glorious scalability improvements in our codebase. The implementation was quite easy, because our service layer did most of the time just some simple EntityFramework 6 queries. The field test went horribly wrong After we moved most of the code to async we did a small test and it worked quite ...

27.09.2018 | 525 1

Migrate a .NET library to .NET Core / .NET Standard 2.0

... to .NET Standard 2.0. This ... .NET Standard. Uhmmm… wait… ... .NET Standard? If you ... .NET Standard is a ... .NET implementations like the ... .NET Framework or .NET Core. But hold ... .NET implementations that support ... .NET Standard Back to ... .NET Framework. All projects ... .NET Standard 2.0 The ... .NET Core and .NET Standard Made Easy” ... .NET Standard projects and ... .NET Standard I really ... .NET Standard library ...

31.08.2018 | 440 0

Improving Code

Improving code TL;DR; Things I learned: long one-liners are hard to read and understand split up your code into small, easy to understand functions less “plumping” (read infrastructure code) is the better get indentation right “Make it correct, make it clear, make it concise, make it fast. In that order.” Wes Dyer Why should I bother? Readable code is: easier to debug fast to fix ...

03.08.2018 | 586 10

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