Hi all; Is there any comprehensive documentation on connecting a Blazor server app to Application Insights? I've found the following bits and pieces: Provides some basics, but leaves a ton unanswered. Looks like a good wrapper for Blazor WASM , nothing for server :( Really comprehensive info for ASP.NET , nothing for Blazor :( thanks - dave

Hi @David Thielen , With Blazor being written on top of ASP.NET, the same logging methodologies would apply. That might be why you aren't seeing a lot of specific posts on it 🙂. You can review Application Insights logging with .NET - Azure Monitor | Microsoft Learn to use the built-in .NET logging to integrate with application insights.

Connecting Blazor server app to Application Insights

David Thielen 2,776

Hi all;

Is there any comprehensive documentation on connecting a Blazor server app to Application Insights? I've found the following bits and pieces:

Provides some basics, but leaves a ton unanswered.
Looks like a good wrapper for Blazor WASM, nothing for server :(
Really comprehensive info for ASP.NET, nothing for Blazor :(

thanks - dave

1 answer

Ryan Hill 26,951 Reputation points Microsoft Employee

2024-07-12T14:04:00.0266667+00:00

Hi @David Thielen,

With Blazor being written on top of ASP.NET, the same logging methodologies would apply. That might be why you aren't seeing a lot of specific posts on it 🙂.

You can review Application Insights logging with .NET - Azure Monitor | Microsoft Learn to use the built-in .NET logging to integrate with application insights.
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David Thielen 2,776 Reputation points

2024-07-12T16:25:00.3133333+00:00

@Ryan Hill - thank you, a follow up question. That link says add the following:

builder.Logging.AddApplicationInsights( configureTelemetryConfiguration: (config) => config.ConnectionString = builder.Configuration.GetConnectionString("APPLICATIONINSIGHTS_CONNECTION_STRING"), configureApplicationInsightsLoggerOptions: (options) => { } ); builder.Logging.AddFilter<ApplicationInsightsLoggerProvider>("your-category", LogLevel.Trace);

What is the AddFilter doing? I need to know in order to know what to pass as my "your-category"

thanks - dave

Ryan Hill 26,951 Reputation points Microsoft Employee

2024-07-12T19:52:45.7433333+00:00

Sure, no problem @David Thielen. Filter category basically means the runtime will inspect the namespace of what's being logged and will only allow the category that's set. Me personally, I would advise putting this as part of your appsettings.json to avoid compile/deployment changes.

Have a look at https://learn.microsoft.com/en-us/aspnet/core/fundamentals/logging/?view=aspnetcore-8.0#configure-logging for more.

David Thielen 2,776 Reputation points

2024-07-12T22:56:10.78+00:00

@ryan hill that makes sense. So it could be for example "Microsoft.AspNetCore". If so, I can understand doing that when trying to find a bug. But normally wouldn't you want all the logs? Or am I missing something here (this is new to me)?

thanks - dave
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Connecting Blazor server app to Application Insights

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