microsoft · Dharmesh78 · Sep 17, 2025 · Sep 17, 2025 · Sep 17, 2025
diff --git a/specs/activity/schema/activity-protocol.schema.json b/specs/activity/schema/activity-protocol.schema.json
diff --git a/specs/activity/schema/validator/csharp/Program.cs b/specs/activity/schema/validator/csharp/Program.cs
@@ -0,0 +1,130 @@
+using NJsonSchema;
+using NJsonSchema.Validation;
+using Newtonsoft.Json.Linq;
+
+static async Task<JsonSchema> LoadSchemaAsync(string schemaPath) => await JsonSchema.FromFileAsync(schemaPath);
+
+string schemaFile = Path.Combine(AppContext.BaseDirectory, "activity.schema.json");
+if (!File.Exists(schemaFile))
+{
+    Console.ForegroundColor = ConsoleColor.Red;
+    Console.WriteLine($"Schema file not found: {schemaFile}");
+    Console.ResetColor();
+    return;
+}
+
+// Discover example files relative to project root (navigate up to validator folder structure)
+// Expect examples under ../examples/json
+string? baseDir = AppContext.BaseDirectory;
+// Try to locate examples directory by walking up a few levels
+string? examplesDir = null;
+var current = new DirectoryInfo(baseDir);
+for (int i = 0; i < 6 && current != null; i++)
+{
+    var probe = Path.Combine(current.FullName, "examples", "json");
+    if (Directory.Exists(probe)) { examplesDir = probe; break; }
+    current = current.Parent;
+}
+
+if (examplesDir == null)
+{
+    Console.ForegroundColor = ConsoleColor.Yellow;
+    Console.WriteLine("Examples directory not found (expected ../examples/json). Will fall back to input.json if present.");
+    Console.ResetColor();
+}
+
+var schema = await LoadSchemaAsync(schemaFile);
+
+List<(string name, JToken instance)> instances = new();
+
+if (examplesDir != null)
+{
+    foreach (var file in Directory.GetFiles(examplesDir, "*.json", SearchOption.TopDirectoryOnly).OrderBy(f => f))
+    {
+        try
+        {
+            var text = File.ReadAllText(file);
+            instances.Add((Path.GetFileName(file), JToken.Parse(text)));
+        }
+        catch (Exception ex)
+        {
+            Console.ForegroundColor = ConsoleColor.Red;
+            Console.WriteLine($"Failed to parse {file}: {ex.Message}");
+            Console.ResetColor();
+        }
+    }
+}
+
+// Backward compatibility: single input.json
+string singleInput = Path.Combine(AppContext.BaseDirectory, "input.json");
+if (File.Exists(singleInput))
+{
+    try
+    {
+        instances.Add(("input.json", JToken.Parse(File.ReadAllText(singleInput))));
+    }
+    catch (Exception ex)
+    {
+        Console.ForegroundColor = ConsoleColor.Red;
+        Console.WriteLine("input.json parse error: " + ex.Message);
+        Console.ResetColor();
+    }
+}
+
+if (instances.Count == 0)
+{
+    Console.ForegroundColor = ConsoleColor.Yellow;
+    Console.WriteLine("No JSON instances found to validate.");
+    Console.ResetColor();
+    return;
+}
+
+int total = 0;
+int failures = 0;
+
+foreach (var (name, token) in instances)
+{
+    total++;
+    var errors = schema.Validate(token);
+    if (errors.Count == 0)
+    {
+        Console.ForegroundColor = ConsoleColor.Green;
+        Console.WriteLine($"[OK] {name} ({token["type"] ?? "unknown-type"})");
+        Console.ResetColor();
+    }
+    else
+    {
+        failures++;
+        Console.ForegroundColor = ConsoleColor.Yellow;
+        Console.WriteLine($"[FAIL] {name} ({token["type"] ?? "unknown-type"}) - {errors.Count} error(s)");
+        Console.ResetColor();
+        int i = 1;
+        foreach (var e in errors)
+        {
+            Console.ForegroundColor = ConsoleColor.Red;
+            Console.WriteLine($"  [{i}] {e.Kind}");
+            Console.ResetColor();
+            Console.WriteLine($"     Path    : {(string.IsNullOrEmpty(e.Path) ? "$" : "$" + e.Path)}");
+            Console.WriteLine($"     Detail  : {e}");
+            if (!string.IsNullOrEmpty(e.Property))
+                Console.WriteLine($"     Property: {e.Property}");
+            i++;
+        }
+    }
+}
+
+Console.WriteLine();
+Console.WriteLine($"Summary: {total - failures} valid / {failures} invalid / {total} total");
+if (failures == 0)
+{
+    Console.ForegroundColor = ConsoleColor.Green;
+    Console.WriteLine("All examples are valid.");
+    Console.ResetColor();
+}
+else
+{
+    Console.ForegroundColor = ConsoleColor.Red;
+    Console.WriteLine("Some examples failed validation.");
+    Console.ResetColor();
+    Environment.ExitCode = 1;
+}
diff --git a/specs/activity/schema/validator/csharp/SchemaValidator.csproj b/specs/activity/schema/validator/csharp/SchemaValidator.csproj
@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+	<OutputType>Exe</OutputType>
+	<TargetFramework>net8.0</TargetFramework>
+	<ImplicitUsings>enable</ImplicitUsings>
+	<Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+	<PackageReference Include="NJsonSchema" Version="11.5.0" />
+  </ItemGroup>
+
+</Project>
diff --git a/specs/activity/schema/validator/csharp/SchemaValidator.sln b/specs/activity/schema/validator/csharp/SchemaValidator.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36414.22 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SchemaValidator", "SchemaValidator.csproj", "{2F44ACFB-7A40-4433-8D58-476B682C7AF7}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{2F44ACFB-7A40-4433-8D58-476B682C7AF7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2F44ACFB-7A40-4433-8D58-476B682C7AF7}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2F44ACFB-7A40-4433-8D58-476B682C7AF7}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2F44ACFB-7A40-4433-8D58-476B682C7AF7}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {833ED1E0-B359-4969-936C-1C5ED1B6803F}
+	EndGlobalSection
+EndGlobal
diff --git a/specs/activity/schema/validator/csharp/dotnetSoln_dharsingh/MyProject.sln b/specs/activity/schema/validator/csharp/dotnetSoln_dharsingh/MyProject.sln
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36119.2 d17.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MyProject", "MyProject\MyProject.csproj", "{DC6AFA74-6604-4C88-BA06-9207526EC36D}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{DC6AFA74-6604-4C88-BA06-9207526EC36D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{DC6AFA74-6604-4C88-BA06-9207526EC36D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{DC6AFA74-6604-4C88-BA06-9207526EC36D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{DC6AFA74-6604-4C88-BA06-9207526EC36D}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {55922005-71F0-4A91-A296-63361F368FE1}
+	EndGlobalSection
+EndGlobal
diff --git a/...schema/validator/csharp/dotnetSoln_dharsingh/MyProject/Models/ActivityValidationResult.cs b/...schema/validator/csharp/dotnetSoln_dharsingh/MyProject/Models/ActivityValidationResult.cs
@@ -0,0 +1,10 @@
+namespace MyProject.Models
+{
+    public class ActivityValidationResult
+    {
+        public bool IsValid { get; set; }
+        public List<string> Errors { get; set; } = new List<string>();
+        public string? ActivityType { get; set; }
+        public string? ValidationMessage { get; set; }
+    }
+}
diff --git a/specs/activity/schema/validator/csharp/dotnetSoln_dharsingh/MyProject/MyProject.csproj b/specs/activity/schema/validator/csharp/dotnetSoln_dharsingh/MyProject/MyProject.csproj
@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Identity.Client" Version="4.73.0" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.6.2" />
+	  <PackageReference Include="Newtonsoft.Json.Schema" Version="4.0.1" />
+	  <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+	  <PackageReference Include="xunit" Version="2.6.1" />
+	  <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
+	  <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+	  <Content Include="activity_protocol.schema">
+		  <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+	  </Content>
+  </ItemGroup>
+
+</Project>
diff --git a/specs/activity/schema/validator/csharp/dotnetSoln_dharsingh/MyProject/MyProject.http b/specs/activity/schema/validator/csharp/dotnetSoln_dharsingh/MyProject/MyProject.http
@@ -0,0 +1,6 @@
+@MyProject_HostAddress = http://localhost:5285
+
+GET {{MyProject_HostAddress}}/weatherforecast/
+Accept: application/json
+
+###
diff --git a/specs/activity/schema/validator/csharp/dotnetSoln_dharsingh/MyProject/Program.cs b/specs/activity/schema/validator/csharp/dotnetSoln_dharsingh/MyProject/Program.cs
@@ -0,0 +1,25 @@
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+
+builder.Services.AddControllers();
+// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
+builder.Services.AddEndpointsApiExplorer();
+builder.Services.AddSwaggerGen();
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment())
+{
+    app.UseSwagger();
+    app.UseSwaggerUI();
+}
+
+app.UseHttpsRedirection();
+
+app.UseAuthorization();
+
+app.MapControllers();
+
+app.Run();
diff --git a/...ity/schema/validator/csharp/dotnetSoln_dharsingh/MyProject/Properties/launchSettings.json b/...ity/schema/validator/csharp/dotnetSoln_dharsingh/MyProject/Properties/launchSettings.json
@@ -0,0 +1,41 @@
+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:46155",
+      "sslPort": 44389
+    }
+  },
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "applicationUrl": "http://localhost:5285",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "applicationUrl": "https://localhost:7010;http://localhost:5285",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}