There are several ways to use Cloud Logging from your .NET application:

• Use a Google logging provider for .NET's standard logging framework
• Use a Google Log4Net provider
• UseGoogle.Cloud.Logging.V2 to directly call the Logging API

Use a Google logging provider for .NET's standard logging framework

You can enable Cloud Logging for .NET applications by using theGoogle.Cloud.Diagnostics libraries for .NET.

• For applications that target ASP.NET Core 3 or later, use theGoogle.Cloud.Diagnostics.AspNetCore3 library. See theGoogle.Cloud.Diagnostics.AspNetCore3 documentation for more information and examples.
• For applications that target earlier versions of ASP.NET Core, use theGoogle.Cloud.Diagnostics.AspNetCore library. See theGoogle.Cloud.Diagnostics.AspNetCore documentation for more information and examples.
• For applications that target non ASP.NET Core platforms, use theGoogle.Cloud.Diagnostics.Common library. See theGoogle.Cloud.Diagnostics.Common documentation for more information and examples.

Use a Google Log4Net provider

TheGoogle.Cloud.Logging.Log4Net library implements a Log4Net provider forCloud Logging. For examples that show how to configure and usethis library, see theGoogle.Cloud.Logging.Log4Net documentation.

UseGoogle.Cloud.Logging.V2 to directly call the Logging API

You can also write logs by calling the Cloud Logging API usingtheGoogle.Cloud.Logging.V2 client library. You can install this library fromNuGet.

After theGoogle.Cloud.Logging.V2 client library is installed, you canstart sending your application's logs to Cloud Logging. For example, youmight customize the following method and add it to your application code.To view the full sample, clickmore_vertMore,and then selectView on GitHub.

privatevoidWriteLogEntry(stringlogId){varclient=LoggingServiceV2Client.Create();LogNamelogName=newLogName(s_projectId,logId);varjsonPayload=newStruct(){Fields={{"name",Value.ForString("King Arthur")},{"quest",Value.ForString("Find the Holy Grail")},{"favorite_color",Value.ForString("Blue")}}};LogEntrylogEntry=newLogEntry{LogNameAsLogName=logName,Severity=LogSeverity.Info,JsonPayload=jsonPayload};MonitoredResourceresource=newMonitoredResource{Type="global"};IDictionary<string,string>entryLabels=newDictionary<string,string>{{"size","large"},{"color","blue"}};client.WriteLogEntries(logName,resource,entryLabels,new[]{logEntry},_retryAWhile);Console.WriteLine($"Created log entry in log-id: {logId}.");}

Write some logging code that callsWriteLogEntry(). The resulting log entrywill be in the Logs Explorer under theGlobal resource.

In the Google Cloud console, go to theLogs Explorer page:

Go toLogs Explorer

If you use the search bar to find this page, then select the result whose subheading isLogging.

Resources

• For details on the Logs Explorer, see [Using the Logs Explorer][view-ui].
• For ASP.NET Core 3+ applications
  • Documentation:Google.Cloud.Diagnostics.AspNetCore3
  • NuGet:Google.Cloud.Diagnostics.AspNetCore3 package
• For earlier ASP.NET Core applications
  • Documentation:Google.Cloud.Diagnostics.AspNetCore
  • NuGet:Google.Cloud.Diagnostics.AspNetCore package
• For non ASP.NET Core applications
  • Documentation:Google.Cloud.Diagnostics.Common
  • NuGet:Google.Cloud.Diagnostics.Common package
• Log4Net Provider
  • Documentation:Google.Cloud.Logging.Log4Net
  • NuGet:Google.Cloud.Logging.Log4Net package
• GitHub: googleapis/google-cloud-dotnet
• GitHub issue tracker