Application Insights ‘handledAt’ field in exception

Question

I am looking at ‘handledAt’ field in exception telemetry.

https://learn.microsoft.com/en-us/dotnet/api/microsoft.applicationinsights.datacontracts.exceptionhandledat?view=azure-dotnet

The documentation says its obsolete but use custom properties to report exception handling. Is this filed still used and is there any other default field or alternative way to find that exceptions are handled. Also, till which version, 'handledAt, was supported.

If you have any information and provide, it will be of immense help.

Answer 1

Hello @Mahesh Gupta ,

The property HandledAt still works but it is deprecated, so I would not suggest you to use that anymore. If you set that property, the resulting exception in app insights would have a custom dimension like below:

You can achieve the same by setting properties of the exception telemetry in code in either of the overloads of TrackException method of TelemetryClient:

1. Setting properties of exception telemetry:

                var telemetry = new ExceptionTelemetry(exception);  
                telemetry.Properties["handledAt"] = "UserCode"; // or any string  
                telemetryClient.TrackException(telemetry);  
   

Or 2. The second overload of TrackException accepts properties as a param:

                var properties = new Dictionary<string, string>();  
                properties["handledAt"] = "UserCode"; // or any string  
                telemetryClient.TrackException(exception, properties, metrics);                      

Note Custom dimension is a very helpful way to set free form properties of telemetry from code. So, you can set whatever you want. The above handledAt is just to solve your problem.

I am not too sure about the version in which handledAt got deprecated, it was way back in 2017-ish.