Merge pull request #218878 from kainawroth/patch-3

Adding .NET 6 version of collecting performance counters

Author: 19BMG00

articles/azure-monitor/app/performance-counters.md

@@ -112,25 +112,50 @@ Or you can do the same thing with custom metrics that you created:
 
 ### Collect performance counters in code for ASP.NET Core web applications
 
-Modify the `ConfigureServices` method in your `Startup.cs` class:
+### [ASP.NET Core 6 and later](#tab/net-core-new)
+
+Configure `PerformanceCollectorModule` after the `WebApplication.CreateBuilder()` method in `Program.cs`:
 
 ```csharp
 using Microsoft.ApplicationInsights.Extensibility.PerfCounterCollector;
 
-    public void ConfigureServices(IServiceCollection services)
+var builder = WebApplication.CreateBuilder(args);
+
+builder.Services.AddApplicationInsightsTelemetry();
+
+// The following configures PerformanceCollectorModule.
+
+builder.Services.ConfigureTelemetryModule<PerformanceCollectorModule>((module, o) =>
     {
-        services.AddApplicationInsightsTelemetry();
-
-        // The following configures PerformanceCollectorModule.
-  services.ConfigureTelemetryModule<PerformanceCollectorModule>((module, o) =>
-            {
-                // the application process name could be "dotnet" for ASP.NET Core self-hosted applications.
-                module.Counters.Add(new PerformanceCounterCollectionRequest(
-    @"\Process([replace-with-application-process-name])\Page Faults/sec", "DotnetPageFaultsPerfSec"));
-            });
-    }
+        // The application process name could be "dotnet" for ASP.NET Core self-hosted applications.
+        module.Counters.Add(new PerformanceCounterCollectionRequest(@"\Process([replace-with-application-process-name])\Page Faults/sec", "DotnetPageFaultsPerfSec"));
+    });
+
+var app = builder.Build();
+```
+
+### [ASP.NET Core 5 and earlier](#tab/net-core-old)
+
+Configure `PerformanceCollectorModule` in the `ConfigureServices()` method in `Startup.cs`:
+
+```csharp
+using Microsoft.ApplicationInsights.Extensibility.PerfCounterCollector;
+
+public void ConfigureServices(IServiceCollection services)
+{
+    services.AddApplicationInsightsTelemetry();
+
+    // The following configures PerformanceCollectorModule:
+    services.ConfigureTelemetryModule<PerformanceCollectorModule>((module, o) =>
+        {
+            // The application process name could be "dotnet" for ASP.NET Core self-hosted applications.
+            module.Counters.Add(new PerformanceCounterCollectionRequest(@"\Process([replace-with-application-process-name])\PageFaults/sec", "DotnetPageFaultsPerfSec"));
+        });
+}
 ```
 
+---
+
 ## Performance counters in Log Analytics
 You can search and display performance counter reports in [Log Analytics](../logs/log-query-overview.md).