Mark AddCSharpApp as experimental

Author: DamianEdwards

playground/FileBasedApps/Directory.Build.props

@@ -0,0 +1,9 @@
+<Project>
+
+    <Import Project="$([MSBuild]::GetPathOfFileAbove('Directory.Build.props', '$(MSBuildThisFileDirectory)../'))" />
+
+    <PropertyGroup>
+        <NoWarn>$(NoWarn);ASPIRECSHARPAPPS001</NoWarn>
+    </PropertyGroup>
+
+</Project>

playground/FileBasedApps/api.cs

@@ -2,7 +2,7 @@
 
 #:sdk Microsoft.NET.Sdk.Web
 #:package Microsoft.AspNetCore.OpenApi
-#:project ..\Playground.ServiceDefaults\Playground.ServiceDefaults.csproj
+#:project ../Playground.ServiceDefaults
 
 using System.Text.Json.Serialization;
 

src/Aspire.Hosting/ProjectResourceBuilderExtensions.cs

@@ -3,6 +3,7 @@
 
 #pragma warning disable ASPIREEXTENSION001
 using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
 using Aspire.Hosting.ApplicationModel;
 using Aspire.Hosting.Dashboard;
 using Aspire.Hosting.Dcp.Model;
@@ -294,6 +295,7 @@ public static IResourceBuilder<ProjectResource> AddProject(this IDistributedAppl
     /// <param name="name"></param>
     /// <param name="path"></param>
     /// <returns></returns>
+    [Experimental("ASPIRECSHARPAPPS001", UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
     public static IResourceBuilder<ProjectResource> AddCSharpApp(this IDistributedApplicationBuilder builder, string name, string path)
     {
         ArgumentNullException.ThrowIfNull(builder);
@@ -311,6 +313,7 @@ public static IResourceBuilder<ProjectResource> AddCSharpApp(this IDistributedAp
     /// <param name="path"></param>
     /// <param name="configure"></param>
     /// <returns></returns>
+    [Experimental("ASPIRECSHARPAPPS001", UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
     public static IResourceBuilder<ProjectResource> AddCSharpApp(this IDistributedApplicationBuilder builder, [ResourceName] string name, string path, Action<ProjectResourceOptions> configure)
     {
         ArgumentNullException.ThrowIfNull(builder);