Fix Resource Monitoring sample app (#47058)

Author: evgenyfedorov2

docs/core/diagnostics/media/resource-monitoring-output.png

@@ -1,20 +1,29 @@
 // <setup>
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Diagnostics.ResourceMonitoring;
+using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using Spectre.Console;
 
-var services = new ServiceCollection()
-    .AddLogging(static builder => builder.AddConsole())
-    .AddResourceMonitoring();
-
-var provider = services.BuildServiceProvider();
+var app = Host.CreateDefaultBuilder()
+    .ConfigureServices(services =>
+    {
+        services.AddLogging(static builder => builder.AddConsole())
+                .AddResourceMonitoring();
+    })
+    .Build();
 
-var monitor = provider.GetRequiredService<IResourceMonitor>();
+var monitor = app.Services.GetRequiredService<IResourceMonitor>();
+await app.StartAsync();
 // </setup>
 
 using var cancellationTokenSource = new CancellationTokenSource();
 var token = cancellationTokenSource.Token;
+Console.CancelKeyPress += (_, e) =>
+{
+    e.Cancel = true;
+    cancellationTokenSource.Cancel();
+};
 
 // <monitor>
 await StartMonitoringAsync(monitor, token);
@@ -60,11 +69,5 @@ await AnsiConsole.Live(table)
                 await Task.Delay(window);
             }
         });
-
-    Console.CancelKeyPress += (_, e) =>
-    {
-        e.Cancel = true;
-        cancellationTokenSource.Cancel();
-    };
 }
 // </monitor>

docs/core/diagnostics/snippets/resource-monitoring/Program.cs

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -11,6 +11,7 @@
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="9.0.6" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="9.0.6" />
     <PackageReference Include="Microsoft.Extensions.Diagnostics.ResourceMonitoring" Version="9.6.0" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="9.0.6" />
     <PackageReference Include="Spectre.Console" Version="0.50.0" />
   </ItemGroup>