Logging extension diagnostics
Each extension part can inject a TraceSource instance that is created as part of the extensibility framework. Extension developers are recommended to utilize this instance for diagnostics as it will allow integration with future tools on Visual Studio diagnostics.
Accessing log entries
Currently the logs are output to %TEMP%\VSLogs directory in svclog XML format. This format allows logs from multiple processes to be correlated to each other and can be opened by Microsoft Service Trace Viewer tool. This tool should already be available on machines with Visual Studio as it is part of .NET Framework tools.