.NET: Re-enable ImplicitUsings in samples and clean up NoWarns (#1060)

* Re-enable ImplicitUsings in samples and clean up NoWarns * Fix dotnet format * More dotnet format * More dotnet format --------- Co-authored-by: Chris <66376200+crickman@users.noreply.github.com>
2026-06-16 21:04:09 +08:00 · 2025-10-01 15:37:03 -04:00
parent 0fef277c70
commit a414461570
192 changed files with 100 additions and 345 deletions
@@ -198,6 +198,7 @@ dotnet_diagnostic.CA1508.severity = none # Avoid dead conditional code. Too many
 dotnet_diagnostic.CA1510.severity = none # ArgumentNullException.Throw
 dotnet_diagnostic.CA1512.severity = none # ArgumentOutOfRangeException.Throw
 dotnet_diagnostic.CA1515.severity = none # Making public types from exes internal
+dotnet_diagnostic.CA1707.severity = none # Identifiers should not contain underscores
 dotnet_diagnostic.CA1846.severity = none # Prefer 'AsSpan' over 'Substring'
 dotnet_diagnostic.CA1848.severity = none # For improved performance, use the LoggerMessage delegates
 dotnet_diagnostic.CA1849.severity = none # Use async equivalent; analyzer is currently noisy
@@ -8,8 +8,7 @@
    <GenerateDocumentationFile>true</GenerateDocumentationFile>
    <LangVersion>13</LangVersion>
    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
-    <NoWarn>$(NoWarn);IDE0290;IDE0079;NU5128;CS8002</NoWarn>
+    <NoWarn>$(NoWarn);NU5128</NoWarn>
    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
    <ProjectsCoreTargetFrameworks>net9.0</ProjectsCoreTargetFrameworks>
    <ProjectsTargetFrameworks>net9.0;net8.0;netstandard2.0;net472</ProjectsTargetFrameworks>
@@ -33,7 +32,7 @@

  <!-- .NET Framework/.NET Standard don't properly support nullable reference types, suppress any warnings for those TFMs -->
  <PropertyGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' OR '$(TargetFramework)' == 'net472' ">
-    <NoWarn>$(NoWarn);CS8604;CS8602</NoWarn>
+    <NoWarn>$(NoWarn);nullable</NoWarn>
  </PropertyGroup>

  <PropertyGroup>
@@ -55,6 +55,7 @@
  <Folder Name="/Samples/GettingStarted/AgentWithOpenAI/">
    <File Path="samples/GettingStarted/AgentWithOpenAI/README.md" />
    <Project Path="samples/GettingStarted/AgentWithOpenAI/Agent_OpenAI_Step01_Running/Agent_OpenAI_Step01_Running.csproj" />
+    <Project Path="samples/GettingStarted/AgentWithOpenAI/Agent_OpenAI_Step02_Reasoning/Agent_OpenAI_Step02_Reasoning.csproj" />
  </Folder>
  <Folder Name="/Samples/GettingStarted/ModelContextProtocol/">
    <Project Path="samples/GettingStarted/ModelContextProtocol/Agent_MCP_Server/Agent_MCP_Server.csproj" />
@@ -1,8 +1,16 @@
 # Suppressing errors for Sample projects under dotnet/samples folder
 [*.cs]
-dotnet_diagnostic.CA2007.severity = none # Do not directly await a Task
-dotnet_diagnostic.CS1591.severity = none # Missing XML comment for publicly visible type or member
-dotnet_diagnostic.IDE1006.severity = warning # Naming rule violations
-dotnet_diagnostic.VSTHRD111.severity = none # Use .ConfigureAwait(bool) is hidden by default, set to none to prevent IDE from changing on autosave
 dotnet_diagnostic.CA1716.severity = none # Add summary to documentation comment.
 dotnet_diagnostic.CA2000.severity = none # Call System.IDisposable.Dispose on object before all references to it are out of scope
+dotnet_diagnostic.CA2007.severity = none # Do not directly await a Task
+
+dotnet_diagnostic.CS1591.severity = none # Missing XML comment for publicly visible type or member
+
+dotnet_diagnostic.IDE1006.severity = warning # Naming rule violations
+
+dotnet_diagnostic.VSTHRD111.severity = none # Use .ConfigureAwait(bool) is hidden by default, set to none to prevent IDE from changing on autosave
+dotnet_diagnostic.VSTHRD200.severity = none # Use Async suffix for async methods
+
+dotnet_diagnostic.MEAI001.severity = none   # [Experimental] APIs in Microsoft.Extensions.AI
+dotnet_diagnostic.OPENAI001.severity = none # [Experimental] APIs in OpenAI
+dotnet_diagnostic.SKEXP0110.severity = none # [Experimental] APIs in Microsoft.SemanticKernel
@@ -6,7 +6,6 @@
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <UserSecretsId>5ee045b0-aea3-4f08-8d31-32d1a6f8fed0</UserSecretsId>
-    <NoWarn>$(NoWarn);CS1591;VSTHRD111;CA2007;SKEXP0110</NoWarn>
  </PropertyGroup>

  <ItemGroup>
@@ -6,7 +6,6 @@
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <UserSecretsId>5ee045b0-aea3-4f08-8d31-32d1a6f8fed0</UserSecretsId>
-    <NoWarn>$(NoWarn);CS1591;VSTHRD111;CA2007;SKEXP0110</NoWarn>
  </PropertyGroup>

  <ItemGroup>
@@ -7,7 +7,6 @@
    <IsAotCompatible>false</IsAotCompatible>
    <ProjectsTargetFrameworks>net472;net9.0</ProjectsTargetFrameworks>
    <UserSecretsId>5ee045b0-aea3-4f08-8d31-32d1a6f8fed0</UserSecretsId>
-    <NoWarn>$(NoWarn);CA1707;MEAI001</NoWarn>
  </PropertyGroup>

  <ItemGroup>
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,7 +2,6 @@

 // This sample shows how to create and use a simple AI agent with an existing A2A agent.

-using System;
 using A2A;
 using Microsoft.Agents.AI;

@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,7 +2,6 @@

 // This sample shows how to create and use a simple AI agent with Azure Foundry Agents as the backend.

-using System;
 using Azure.AI.Agents.Persistent;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,7 +2,6 @@

 // This sample shows how to create and use a simple AI agent with Azure OpenAI Chat Completion as the backend.

-using System;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,9 +2,6 @@

 // This sample shows how to create and use a simple AI agent with Azure OpenAI Responses as the backend.

-#pragma warning disable OPENAI001 // Type is for evaluation purposes only and is subject to change or removal in future updates. Suppress this diagnostic to proceed.
-
-using System;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -4,13 +4,8 @@
 // In this case the agent doesn't use AI at all, and simply parrots back the user input in upper case.
 // You can however, build a fully custom agent that uses AI in any way you want.

-using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Runtime.CompilerServices;
 using System.Text.Json;
-using System.Threading;
-using System.Threading.Tasks;
 using Microsoft.Agents.AI;
 using Microsoft.Extensions.AI;
 using SampleApp;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -3,7 +3,6 @@
 // This sample shows how to create and use a simple AI agent with ONNX as the backend.
 // WARNING: ONNX doesn't support function calling, so any function tools passed to the agent will be ignored.

-using System;
 using Microsoft.Agents.AI;
 using Microsoft.ML.OnnxRuntimeGenAI;

@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,7 +2,6 @@

 // This sample shows how to create and use a simple AI agent with Ollama as the backend.

-using System;
 using Microsoft.Agents.AI;
 using OllamaSharp;

@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -5,9 +5,6 @@
 // WARNING: The Assistants API is deprecated and will be shut down.
 // For more information see the OpenAI documentation: https://platform.openai.com/docs/assistants/migration

-#pragma warning disable OPENAI001 // Type is for evaluation purposes only and is subject to change or removal in future updates. Suppress this diagnostic to proceed.
-
-using System;
 using Microsoft.Agents.AI;
 using OpenAI;

@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,7 +2,6 @@

 // This sample shows how to create and use a simple AI agent with OpenAI Chat Completion as the backend.

-using System;
 using Microsoft.Agents.AI;
 using OpenAI;

@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,9 +2,6 @@

 // This sample shows how to create and use a simple AI agent with OpenAI Responses as the backend.

-#pragma warning disable OPENAI001 // Type is for evaluation purposes only and is subject to change or removal in future updates. Suppress this diagnostic to proceed.
-
-using System;
 using Microsoft.Agents.AI;
 using OpenAI;

@@ -5,14 +5,9 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

-  <ItemGroup>
-    <PackageReference Include="OpenAI" />
-    <PackageReference Include="Microsoft.Extensions.AI.OpenAI" />
-  </ItemGroup>
-
  <ItemGroup>
    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.OpenAI\Microsoft.Agents.AI.OpenAI.csproj" />
  </ItemGroup>
@@ -2,9 +2,7 @@

 // This sample shows how to create and use a simple AI agent with OpenAI as the backend.

-using System;
 using System.ClientModel;
-using System.Linq;
 using Microsoft.Agents.AI;
 using OpenAI;
 using OpenAI.Chat;
@@ -3,14 +3,13 @@
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net9.0</TargetFramework>
+
    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
-    <NoWarn>$(NoWarn);OPENAI001</NoWarn>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
-    <ProjectReference
-      Include="..\..\..\..\src\Microsoft.Agents.AI.OpenAI\Microsoft.Agents.AI.OpenAI.csproj" />
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.OpenAI\Microsoft.Agents.AI.OpenAI.csproj" />
  </ItemGroup>

 </Project>
@@ -2,7 +2,6 @@

 // This sample shows how to create and use an AI agent with reasoning capabilities.

-using System;
 using Microsoft.Agents.AI;
 using Microsoft.Extensions.AI;
 using OpenAI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,7 +2,6 @@

 // This sample shows how to create and use a simple AI agent with Azure OpenAI as the backend.

-using System;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,7 +2,6 @@

 // This sample shows how to create and use a simple AI agent with a multi-turn conversation.

-using System;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -3,7 +3,6 @@
 // This sample demonstrates how to use a ChatClientAgent with function tools.
 // It shows both non-streaming and streaming agent interactions using menu-related tools.

-using System;
 using System.ComponentModel;
 using Azure.AI.OpenAI;
 using Azure.Identity;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -5,9 +5,7 @@
 // If the agent is hosted in a service, with a remote user, combine this sample with the Persisted Conversations sample to persist the chat history
 // while the agent is waiting for user input.

-using System;
 using System.ComponentModel;
-using System.Linq;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,7 +2,6 @@

 // This sample shows how to create and use a simple AI agent with Azure OpenAI as the backend, to produce structured output using JSON schema from a class.

-using System;
 using System.ComponentModel;
 using System.Text.Json;
 using System.Text.Json.Serialization;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,8 +2,6 @@

 // This sample shows how to create and use a simple AI agent with a conversation that can be persisted to disk.

-using System;
-using System.IO;
 using System.Text.Json;
 using Azure.AI.OpenAI;
 using Azure.Identity;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -4,12 +4,7 @@

 // This sample shows how to create and use a simple AI agent with a conversation that can be persisted to disk.

-using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Text.Json;
-using System.Threading;
-using System.Threading.Tasks;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,7 +2,6 @@

 // This sample shows how to create and use a simple AI agent with Azure OpenAI as the backend that logs telemetry using OpenTelemetry.

-using System;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -4,9 +4,6 @@

 // This sample shows how to use dependency injection to register an AIAgent and use it from a hosted service with a user input chat loop.

-using System;
-using System.Threading;
-using System.Threading.Tasks;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
    <UserSecretsId>3afc9b74-af74-4d8e-ae96-fa1c511d11ac</UserSecretsId>
  </PropertyGroup>

@@ -2,7 +2,6 @@

 // This sample shows how to expose an AI agent as an MCP tool.

-using System;
 using Azure.AI.Agents.Persistent;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,7 +2,6 @@

 // This sample shows how to use Image Multi-Modality with an AI agent.

-using System;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Extensions.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
    <UserSecretsId>3afc9b74-af74-4d8e-ae96-fa1c511d11ac</UserSecretsId>
  </PropertyGroup>

@@ -2,7 +2,6 @@

 // This sample shows how to create and use a Azure OpenAI AI agent as a function tool.

-using System;
 using System.ComponentModel;
 using Azure.AI.OpenAI;
 using Azure.Identity;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -6,12 +6,8 @@
 // The component adds a prompt to ask for this information if it is not already known
 // and provides it to the model before each invocation if known.

-using System;
-using System.Linq;
 using System.Text;
 using System.Text.Json;
-using System.Threading;
-using System.Threading.Tasks;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,8 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>
    
    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
-	<NoWarn>VSTHRD200;CA1707</NoWarn>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -5,20 +5,13 @@
 // function invocation (logging and result overrides), and human-in-the-loop
 // approval workflows for sensitive function calls.

-using System;
-using System.Collections.Generic;
 using System.ComponentModel;
-using System.Linq;
 using System.Text.RegularExpressions;
-using System.Threading;
-using System.Threading.Tasks;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
 using Microsoft.Extensions.AI;

-#pragma warning disable MEAI001 // Type is for evaluation purposes only and is subject to change or removal in future updates. Suppress this diagnostic to proceed.
-
 // Get Azure AI Foundry configuration from environment variables
 var endpoint = Environment.GetEnvironmentVariable("AZURE_OPENAI_ENDPOINT") ?? throw new InvalidOperationException("AZURE_OPENAI_ENDPOINT is not set.");
 var deploymentName = System.Environment.GetEnvironmentVariable("AZURE_OPENAI_DEPLOYMENT_NAME") ?? "gpt-4o";
@@ -5,8 +5,8 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
-    <NoWarn>VSTHRD200;CA1707;CA1812</NoWarn>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <NoWarn>$(NoWarn);CA1812</NoWarn>
    <RootNamespace>Agent_Step15_Plugins</RootNamespace>
  </PropertyGroup>

@@ -9,8 +9,6 @@
 // as AI functions. The AsAITools method of the plugin class shows how to specify
 // which methods should be exposed to the AI agent.

-using System;
-using System.Collections.Generic;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,8 +2,6 @@

 // This sample shows how to create and use a simple AI agent with tools from an MCP Server.

-using System;
-using System.Linq;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,13 +2,9 @@

 // This sample shows how to create and use a simple AI agent with tools from an MCP Server that requires authentication.

-using System;
 using System.Diagnostics;
 using System.Net;
-using System.Net.Http;
 using System.Text;
-using System.Threading;
-using System.Threading.Tasks;
 using System.Web;
 using Azure.AI.OpenAI;
 using Azure.Identity;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -2,7 +2,6 @@

 // This sample shows how to create and use a simple AI agent with Azure Foundry Agents as the backend.

-using System;
 using Azure.AI.Agents.Persistent;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -1,9 +1,7 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System;
 using System.Text.Json;
 using System.Text.Json.Serialization;
-using System.Threading.Tasks;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -1,7 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System;
-using System.Threading.Tasks;
 using Azure.AI.Agents.Persistent;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -1,8 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System;
-using System.Collections.Generic;
-using System.Threading.Tasks;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -1,8 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using Microsoft.Agents.AI;
 using Microsoft.Agents.AI.Workflows;
 using Microsoft.Agents.AI.Workflows.Reflection;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -1,8 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System;
-using System.Collections.Generic;
-using System.Threading.Tasks;
 using Microsoft.Agents.AI.Workflows;

 namespace WorkflowCheckpointAndRehydrateSample;
@@ -1,7 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System.Threading;
-using System.Threading.Tasks;
 using Microsoft.Agents.AI.Workflows;
 using Microsoft.Agents.AI.Workflows.Reflection;

@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -1,9 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System;
-using System.Collections.Generic;
-using System.Threading;
-using System.Threading.Tasks;
 using Microsoft.Agents.AI.Workflows;

 namespace WorkflowCheckpointAndResumeSample;
@@ -1,7 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System.Threading;
-using System.Threading.Tasks;
 using Microsoft.Agents.AI.Workflows;
 using Microsoft.Agents.AI.Workflows.Reflection;

@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -1,9 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System;
-using System.Collections.Generic;
-using System.Threading;
-using System.Threading.Tasks;
 using Microsoft.Agents.AI.Workflows;

 namespace WorkflowCheckpointWithHumanInTheLoopSample;
@@ -1,7 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System.Threading;
-using System.Threading.Tasks;
 using Microsoft.Agents.AI.Workflows;
 using Microsoft.Agents.AI.Workflows.Reflection;

@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -1,9 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -1,9 +1,7 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System;
 using System.Text.Json;
 using System.Text.Json.Serialization;
-using System.Threading.Tasks;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -1,7 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System.IO;
-
 namespace WorkflowEdgeConditionSample;

 /// <summary>
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -1,9 +1,7 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System;
 using System.Text.Json;
 using System.Text.Json.Serialization;
-using System.Threading.Tasks;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -1,7 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System.IO;
-
 namespace WorkflowSwitchCaseSample;

 /// <summary>
@@ -5,7 +5,7 @@
    <TargetFramework>net9.0</TargetFramework>

    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <ItemGroup>
@@ -1,10 +1,7 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System;
-using System.Collections.Generic;
 using System.Text.Json;
 using System.Text.Json.Serialization;
-using System.Threading.Tasks;
 using Azure.AI.OpenAI;
 using Azure.Identity;
 using Microsoft.Agents.AI;
@@ -1,7 +1,5 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System.IO;
-
 namespace WorkflowMultiSelectionSample;

 /// <summary>
@@ -6,7 +6,7 @@
    <ProjectsDebugTargetFrameworks>net9.0</ProjectsDebugTargetFrameworks>
    <TargetFrameworks Condition="'$(Configuration)' == 'Debug'">$(ProjectsDebugTargetFrameworks)</TargetFrameworks>
    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
    <NoWarn>$(NoWarn);CA1812</NoWarn>
  </PropertyGroup>

@@ -1,12 +1,7 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System;
-using System.Collections.Generic;
 using System.Diagnostics;
-using System.IO;
-using System.Linq;
 using System.Reflection;
-using System.Threading.Tasks;
 using Azure.AI.Agents.Persistent;
 using Azure.Identity;
 using Microsoft.Agents.AI.Workflows;
@@ -6,7 +6,7 @@
    <ProjectsDebugTargetFrameworks>net9.0</ProjectsDebugTargetFrameworks>
    <TargetFrameworks Condition="'$(Configuration)' == 'Debug'">$(ProjectsDebugTargetFrameworks)</TargetFrameworks>
    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
    <UserSecretsId>5ee045b0-aea3-4f08-8d31-32d1a6f8fed0</UserSecretsId>
    <NoWarn>$(NoWarn);CA1812</NoWarn>
  </PropertyGroup>
@@ -5,7 +5,6 @@
 // ------------------------------------------------------------------------------

 #nullable enable
-#pragma warning disable IDE0005 // Extra using directive is ok.

 using System;
 using System.Collections;
@@ -1,12 +1,7 @@
 // Copyright (c) Microsoft. All rights reserved.

-using System;
-using System.Collections.Generic;
 using System.Diagnostics;
-using System.IO;
-using System.Linq;
 using System.Reflection;
-using System.Threading.Tasks;
 using Azure.AI.Agents.Persistent;
 using Azure.Identity;
 using Microsoft.Agents.AI.Workflows;
@@ -6,7 +6,7 @@
    <ProjectsDebugTargetFrameworks>net9.0</ProjectsDebugTargetFrameworks>
    <TargetFrameworks Condition="'$(Configuration)' == 'Debug'">$(ProjectsDebugTargetFrameworks)</TargetFrameworks>
    <Nullable>enable</Nullable>
-    <ImplicitUsings>disable</ImplicitUsings>
+    <ImplicitUsings>enable</ImplicitUsings>
    <UserSecretsId>5ee045b0-aea3-4f08-8d31-32d1a6f8fed0</UserSecretsId>
    <NoWarn>$(NoWarn);CA1812</NoWarn>
  </PropertyGroup>
--- a/Show More
+++ b/Show More