`MetricsEventSource` Not Publishing `UpDownCounter` For `dotnet-counters`/`dotnet-monitor`?

[kkeirstead]

The dotnet monitor tool is currently working on adding support for System.Diagnostics.Metrics (the dotnet-counters tool already supports this). Just from taking a look at https://github.com/dotnet/runtime/blob/main/src/libraries/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/Metrics/MetricsEventSource.cs#L44, it looks like there isn't an event being published for UpDownCounter (e.g. UpDownCounterValuePublished) - does this need to be added so that dotnet-counters and dotnet-monitor can process those events?

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Issue Details

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The dotnet monitor tool is currently working on adding support for System.Diagnostics.Metrics (the dotnet-counters tool already supports this). Just from taking a look at https://github.com/dotnet/runtime/blob/main/src/libraries/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/Metrics/MetricsEventSource.cs#L44, it looks like there isn't an event being published for UpDownCounter (e.g. UpDownCounterValuePublished) - does this need to be added so that dotnet-counters and dotnet-monitor can process those events?

Author:	kkeirstead
Assignees:	-
Labels:	area-System.Diagnostics.Tracing, untriaged
Milestone:	-

[tarekgh]

CC @noahfalk