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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

Microsoft Graph: Read user profile and group memberships

In our application we have a background service, that “syncs” user data and group membership information to our database from the Microsoft Graph. The permission model: Programming against the Microsoft Graph is quite easy. There are many SDKS available, but understanding the permission model is hard. ‘Directory.Read.All’ and ‘User.Read.All’: Initially we only synced the ...

01.02.2021 | 225 0

How to get all distribution lists of a user with a single LDAP query

In 2007 I wrote a blogpost how easy it is to get all “groups” of a given user via the tokenGroup attribute. Last month I had the task to check why “distribution list memberships” are not part of the result. The reason is simple: A pure distribution list (not security enabled) is not a security group and only security groups are part of the “tokenGroup” attribute. After some thoughts and ...

31.12.2020 | 379 5

Update AzureDevOps Server 2019 to AzureDevOps Server 2019 Update 1

... itself don’t use the Windows Certificate Store. To resolve this, the root certificate from our Domain controller must be stored on the agent. [Environment]::SetEnvironmentVariable(“NODE_EXTRA_CA_CERTS”, “C:\SSLCert\root-CA.pem”, “Machine”) Summary The update itself was easy, but it took us some hours to configure our Build Agents. After the initial hiccup it went ...

30.11.2020 | 444 4

DllRegisterServer 0x80020009 Error

Last week I had a very strange issue and the solution was really “easy”, but took me a while. Scenario For our products we b uild Office COM Addins with a C based “Shim” that boots up our .NET code (e.g. something like this. As the nature of COM: It requires some pretty dumb registry entries to work and in theory our toolchain should “build” and automatically “register” the output. ...

01.11.2020 | 342 3

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 ...

30.09.2020 | 381 2

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

... 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. ... To “re-map” the .svc extension to the correct handler I needed to add this to the web .config : ... system.webServer ... handlers remove name "svc-integrated" / add name "svc-integrated" path "*.svc" ...

01.09.2020 | 519 1

EWS, Exchange Online and OAuth with a Service Account

... to access contact information via a web service from the organization, just like the traditional “Global ... EWS is… old. Why? The Exchange Web Services are old, but still quite powerful and still ... “AcquireTokenByUsernamePassword” method: ... var cred new Net workCredential("UserName", "Password"); var authResult await pca.AcquireTokenByUsernamePassword(new string[] { ...

01.08.2020 | 398 2

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 | 652 4

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 | 489 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 | 642 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 | 493 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 | 643 5

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 | 589 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 | 923 21

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 | 446 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 | 591 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 | 385 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 | 695 10

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 | 556 8

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 | 471 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 | 596 7

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 | 614 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 | 513 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 | 1271 44

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 | 653 0

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