How to capture an ASP.NET Core memory dump on Azure App Service

Azure App Service
Azure App Service

I have written numerous articles about ASP.NET and creating memory dumps, but noticed I had not written one specifically about capturing an ASP.NET Core memory dump on an Azure App Service.  Here are some of my ‘related’ articles of this matter. Create a memory dump for your slow performing Web App How to take a…

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Azure Functions and Azure are blowing my mind

Analyze Brain Waves
Analyze Brain Waves

I am really starting to like these Azure Functions.  Just imagining that I don’t even need a server anymore…at all.  Only a few years ago the major blocker was getting a server online to manage requests from your customer, the cost, complexity and management was HUGE!  And now you don’t even need one at all. …

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Create a .NET Core 2 application on Linux with Visual Studio Code

Linux Benjamin Perkins
Linux Benjamin Perkins

The plan is to work some with Linux and I have chosen Ubuntu 16.04 LTS because this, AFAIK, is the flavor which Azure App Service Linux containers runs, see more about that here. I built my Ubuntu work station, by downloading the ISO from the Ubuntu site here and burning it to a DVD.  Yes,…

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What do C# values look like in WinDbg

WinDbg Debugging Benjamin Perkins
WinDbg Debugging Benjamin Perkins

One of the important areas you need to master when analyzing memory dumps is to recognize patterns that are normal and not normal.  You can only come to those conclusions after looking at many, many, many, many memory dumps and either remembering or taking notes on how a process looks when all is ok, so…

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How to configure log4net on Azure App Service

Azure App Service
Azure App Service

Although I fully recommend using Application Insights (see here) for monitoring your Azure features, I get asked sometimes how to configure log4net onto an Azure App Service.  So, this is how I did it. Install the log4net.dll binary using NuGet Configure the log4net name, type properties in the web.config Configure the log4net properties Modify the…

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Creating a NuGet package for my .NET Standard class library

.NET Core
.NET Core

I successfully created and published my first NuGet package that included a .NET Standard class library here.  It is nothing specificly awesome but it’s pretty cool, simple and something I have never done before.  I simply executed this msbuild command on my .NET Standard class library and it built the package for me. Before I…

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How to install .NET Standard 2.0

Microsoft .NET
Microsoft .NET

The release of .NET Standard has been officially announced here.  I looked for a way to update .NET Standard to version 2.0 as I could see it was not installed on my workstation.  As shown in Figure 1, I only had version 1.0 – 1.6 installed. Figure 1, how to upgrade, install new version of…

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How to install .NET Core 2.0

.NET Core
.NET Core

The release of .NET Core has been officially announced here.  I looked for a way to update .NET Core to version 2.0 as I could see it was not installed on my workstation.  As shown in Figure 1, I only had version 1.0 and 1.1 installed. Figure 1, how to upgrade, install new version of…

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Capture a StackOverflowException and make a dump 0xc00000fd

WinDbg Debugging Benjamin Perkins
WinDbg Debugging Benjamin Perkins

I read in this article that “Starting with the .NET Framework 2.0, you can’t catch a StackOverflowException object with a try/catch block, and the corresponding process is terminated by default. Consequently, you should write your code to detect and prevent a stack overflow.”  That is the reason why the following code was crashing my process…

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ASP.NET Core with Entity Framework Core error, Login Failed

ASP.NET Core
ASP.NET Core

I was working with the EF NuGet package Microsoft.EntityFramework.Tools.DotNet and executed the command-line interface (CLI), also shown in Figure 1. dotnet ef database drop Running this method resulted in the same behavior: context.Database.EnsureDeleted(); Figure 1, Entity Framework Core, CLI I am not sure what exactly I was thinking, but it I did not really expect…

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ASP.NET Core with Entity Framework Core – ASPNETCORE_ENVIRONMENT

ASP.NET Core
ASP.NET Core

This is another one, Figure 1, that just kind of happened because I dropped my database.  Once I re-created the database and my ASP.NET Core application could access it, all was back to normal. Figure 1, ASPNETCORE_ENVIRONMENT environment variable to Development, and restarting the application. Error. An error occurred while processing your request. Development Mode…

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How to add assembly references to an Azure Function App

Azure Functions
Azure Functions

I wanted to do this and I found these articles helpful: #AzureFunction #Azure #Csharp Azure Functions C# developer reference –> see Referencing External Assemblies How to make a simple DLL as an assembly reference just for fun Could not load file or assembly … The system cannot find the file specified SOLVED It did take…

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Could not load file or assembly ‘benjamin, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null’ or one of its dependencies. The system cannot find the file specified.","errorDetails" SOLVED

Azure Functions
Azure Functions

I was writting this article about #AzureFunctions here called “How to add assembly references to an Azure Function App” and another here called “How to make a simple DLL as an assembly reference just for fun” and I got this exceptions when I called the Azure Function: D:\>curl.exe -G http://localhost:7071/api/GrettingsAssemblyReference?code=b442be73f7124dd8ae57747e7ffc496d -d name=Benjamin {“id”:”3abc8583-47c0-43e3-90f0-d2f7fe577d43″,”requestId”:”b74ef638-0f71-4303-adca-2c7741e1dcb7″,”statusCode”:500,”errorCode”:0,”messsage”:”Exception while executing function:…

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How to make a simple DLL as an assembly reference just for fun

Azure Functions
Azure Functions

The path to reproducing a scenario for a custom is sometimes a long-ish one.  I needed to include a custom assembly in an Azure Function App which I describe here “How to add assembly references to an Azure Function App” and documented this one here “Could not load file or assembly” along the way here…

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Azure Functions Access-Control-Allow-Credentials with CORS

Azure Functions
Azure Functions

There is a known issue documented on GitHub here with a title of Cross origin http request CORS fails with response header missing ‘Access-Control-Allow-Credentials: true’.  Although the issue described and a solution provided, I thought I would write up what I did as I use C# and didn’t see any examples of that, so here…

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