Hi everyone,
I ran into a cors error while working on a ReactJS app and uploading images to Azure Storage with an SAS url:
In order to fix this, just log into your azure portal and go to your storage account. You can then add cors policies via the cors menu on the right. To get mine working I used the following:
Cheers,
Chris
Hi everyone,
Just a quick post on how to overwrite the styles of a selected tree item using material ui and ReactJS:
This will make the background color red for ONLY the selected item:
Cheers,
Chris
Hey everyone,
I randomly started encountering the following error while using docker to host my Ocelot gateway:
The solution ended up being to clean out as many temp files as possible, especially the generated certs:
I’ll add an update if I can narrow down what caused the initial issue but for now this seems to work.
Thanks to the following links for the info:
– https://docs.microsoft.com/en-au/aspnet/core/security/enforcing-ssl?view=aspnetcore-3.1&tabs=visual-studio#trust-the-aspnet-core-https-development-certificate-on-windows-and-macos
– https://stackoverflow.com/q/52457514/522859
Hi everyone,
I ran into the following error today while implementing Azure AD B2C:
There are a lot of different solutions to this error posted on Stackoverflow, Github, etc but without anything else to go on it’s pretty hard to narrow down the cause. This is where the ShowPII property comes in handy:
Microsoft.IdentityModel.Logging.IdentityModelEventSource.ShowPII = true; // TODO: This should be removed in production and the authority url changed to https
jwtOptions.RequireHttpsMetadata = false; // TODO: This should be removed in production and the authority url changed to https
jwtOptions.Authority = azureConfig.Authority;
jwtOptions.Audience = azureConfig.AppClientId;
jwtOptions.Events = new JwtBearerEvents {
OnAuthenticationFailed = AuthenticationFailed,
};
…
static Task AuthenticationFailed(AuthenticationFailedContext arg)
{
// For debugging purposes only!
var s = $”AuthenticationFailed: {arg.Exception.Message}”;
arg.Response.ContentLength = s.Length;
System.Diagnostics.Debugger.Break();
return arg.Response.Body.WriteAsync(Encoding.UTF8.GetBytes(s), 0, s.Length);
}
Simply set Microsoft.IdentityModel.Logging.IdentityModelEventSource.ShowPII to true while configuration your authentication and the full internal error will be shown instead of the vague PII message.
In my case this turned out to be an issue with the construction of my authority url.
Cheers,
Chris
Hey everyone,
I ran into the following error today while searching MongoDb for an object:
The issue was that there were extra fields on the returned document that were not specified on the mapping target object. A bit of Googling revealed that there is a provided attribute that allows you to ignore all extra fields.
Simply add [BsonIgnoreExtraElements] to any relevant model definitions.
Thanks to this stackoverflow post for the lead: https://stackoverflow.com/a/23448987/522859
Hey everyone,
A small issue I’ve run into while setting up a .net core web api microservice that also utilises a number of gRPC services. Symptoms were as follows:
Response Read via Fiddler
– HTTP/1.0 200 This buggy server did not return headers
– Value was binary and unable to be read
Server logs
The issue turned out to be that in appSettings.json the default kestrel endpoint had been set to utilise http2. Removing this immediately resolved the issue. It may also be worth double checking your launch settings, startup.cs and program.cs to ensure that nothing’s been overridden.
I expect that any similar routing issues would result in similar symptoms so hopefully this post will be able to save a few people a bit time!
Cheers,
Chris
Hi everyone,
I ran into the following error today after updating visual studio 2019 to version 16.6:
I tried a fair few things to get this going again and I’m assuming they’re not all necessary, but I’ll list them just in case:
– Clean solution
– Close visual studio
– Delete .vs folder
– Ensure that docker-compose is set as startup project
– Edit each project’s .csproj file and ensure that the DockerDefaultTargetOS value is set: Linux
– Edit docker-compose.dcproj and ensure that DocketTargetOS is set
– Restart computer
If you’re able to narrow it down at all I’d be interested in hearing what the actual cause is!
Cheers,
Chris
Hi everyone,
Just a quick post on how to validate a numeric cell to ensure that the value is between two numbers when using OpenXml:
The snippet above will ensure that any values are between 10 and 20. I didn’t come across any examples for this while searching, so hopefully this will be able to help someone else out!
Thanks,
Chris
Hi everyone,
I ran into the following intellisense error while adding a new proto file:
This was one of many errors that were shown and appeared to be an issue with Intellisense mistaking the file for a normal class definition. The following appears to have fixed it:
1) Right click on the file and select “exclude from project”
2) Clean the solution and rebuild
3) Re-include the file in the project (you may have to toggle ‘Show All Files’ at the top of solution explorer to see the excluded item).
Cheers,
Chris
Hi everyone,
I ran into the following error while using docker compose and visual studio:
It took a bit of poking around to find as the error seemed a bit ambiguous, but luckily this turned out to be a simple mistake on my part. I’d renamed my service from “servicename” to “service_name” in docker-compose.yml. Unfortunately, I hadn’t noticed the visual studio had automatically added an entry to docker-compose.override.yml. Because I hadn’t updated this entry it couldn’t find an image for the non-existent service.
A simple error on my part, but hopefully it’s able to save you a bit of time!
Cheers,
Chris
