My application is Microsoft Azure Function App. Using with HttpTrigger along with Microsoft.Extensions.Logging - ILogger.
How to add custom column into Application Insights - Request, trace table.
That column to co-relate the application reference ID with application insight's operation id.
This article explains how to use your own TelemetryClient which can run in parallel to ILogger and give you the full flexibility to put telemetry into AppInsights: https://github.com/Azure/Azure-Functions/wiki/App-Insights#custom-telemetry
Also you can take a look at this to add custom dimensions using ILoggerdirectly: https://github.com/Azure/azure-functions-host/wiki/ILogger#structured-logging
