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.NET C# Java Javascript Exception

.NET, Javascript Blogs & News

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6

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), ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.06.2020 | 33 0
4

Blazor for Office Add-ins: First look

... 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 “communication tunnel” to the hosting Office application - not very different from the real ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
30.04.2020 | 73 0
4

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 | 135 0
5

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 ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.03.2020 | 256 3
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 | 263 3
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 | 529 9
6

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

... applications to .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 ... .NET Core apps like .NET Framework console applications ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.12.2019 | 220 0
10

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() ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
13.10.2019 | 332 2
7

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 ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
30.09.2019 | 185 1
6

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

... following: Install the .NET Core hosting bundle and you are done. Each .NET Core Runtime (and there are ... while using the .NET runtime 2.2.1), still ... (at least for .NET Core 2.X applications) ... _ -Match "Microsoft .NET Core.*Windows Server Hosting" } ... installed the following .NET Core Runtime: _ ... False) { Write-host ".NET Core Runtime (MiniumVersion ... version of the .NET Core runtime on ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.09.2019 | 424 7
5

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 ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.08.2019 | 322 5
7

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 ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.07.2019 | 247 0
7

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 ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.06.2019 | 367 5
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 ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.05.2019 | 387 4
9

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 ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.04.2019 | 293 0
6

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 : ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
27.02.2019 | 669 35
8

Office Add-ins with ASP.NET Core

The “new” Office-Addins Most people might associate Offce-Addins with “old school” COM addins, but since a couple of years Microsoft pushes a new add-in application modal powered by HTML, Javascript and CSS. The cool stuff is, that these add-ins will run unter Windows, macOS, Online in a browser and on the iPad. If you want to read more about the general aspects, just checkout the ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.02.2019 | 430 0
4

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 ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
05.12.2018 | 723 29
6

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 ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
03.12.2018 | 696 0
11

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 ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
13.11.2018 | 404 3
7

How to fix ERR_CONNECTION_RESET & ERR_CERT_AUTHORITY_INVALID with IISExpress and SSL

... can “manage” some part of the SSL stuff via “net sh” from a normal cmd prompt (powershell acts weird with net sh), e.g.: net sh http delete sslcert ipport 0.0.0.0:44300 net sh http add sslcert ipport 0.0.0.0:44300 certhash your_cert_hash_with_no_spaces appid ... I remember that I deleted a sslcert via the net sh tool, but was unable to add a sslcert. After the IisExpressAdminCmd.exe ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.11.2018 | 1154 10
9

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 ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
27.09.2018 | 494 1
3

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 ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
31.08.2018 | 408 0
4

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 ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
03.08.2018 | 540 10
7

Easy way to copy a SQL database with Microsoft SQL Server Management Studio (SSMS)

How to copy a database on the same SQL server The scenario is pretty simple: We just want a copy of our database, with all the data and the complete scheme and permissions. 1. step: Make a back up of your source database Click on the desired database and choose “Backup” under tasks. 2. step: Use copy only or use a full backup In the dialog you may choose “copy-only” backup. With this option ...
.net asp.net asp.net-mvc csharp css html5 iis javascript jquery web
01.08.2018 | 430 3
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