.NET Samples - Create 03-workflows learning path step (#4102)

2026-06-16 21:04:09 +08:00 · 2026-02-19 13:45:25 -08:00
parent 160cc635c1
commit eeb8644f3c
128 changed files with 444 additions and 252 deletions
@@ -0,0 +1,22 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFrameworks>net10.0</TargetFrameworks>
+
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Anthropic" />
+    <PackageReference Include="AWSSDK.Extensions.Bedrock.MEAI" />
+    <PackageReference Include="Microsoft.Extensions.AI.OpenAI" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.Workflows\Microsoft.Agents.AI.Workflows.csproj" />
+    <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI\Microsoft.Agents.AI.csproj" />
+  </ItemGroup>
+
+</Project>
@@ -0,0 +1,72 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using Amazon.BedrockRuntime;
+using Microsoft.Agents.AI;
+using Microsoft.Agents.AI.Workflows;
+using Microsoft.Extensions.AI;
+
+// Define the topic discussion.
+const string Topic = "Goldendoodles make the best pets.";
+
+// Create the IChatClients to talk to different services.
+IChatClient aws = new AmazonBedrockRuntimeClient(
+    Environment.GetEnvironmentVariable("BEDROCK_ACCESSKEY"!),
+    Environment.GetEnvironmentVariable("BEDROCK_SECRETACCESSKEY")!,
+    Amazon.RegionEndpoint.USEast1)
+    .AsIChatClient("amazon.nova-pro-v1:0");
+
+IChatClient anthropic = new Anthropic.AnthropicClient(
+    new() { ApiKey = Environment.GetEnvironmentVariable("ANTHROPIC_APIKEY") })
+    .AsIChatClient("claude-sonnet-4-20250514");
+
+IChatClient openai = new OpenAI.OpenAIClient(
+    Environment.GetEnvironmentVariable("OPENAI_API_KEY")!).GetChatClient("gpt-4o-mini")
+    .AsIChatClient();
+
+// Define our agents.
+AIAgent researcher = new ChatClientAgent(aws,
+    instructions: """
+        Write a short essay on topic specified by the user. The essay should be three to five paragraphs, written at a
+        high school reading level, and include relevant background information, key claims, and notable perspectives.
+        You MUST include at least one silly and objectively wrong piece of information about the topic but believe
+        it to be true.
+        """,
+    name: "researcher",
+    description: "Researches a topic and writes about the material.");
+
+AIAgent factChecker = new ChatClientAgent(openai,
+    instructions: """
+        Evaluate the researcher's essay. Verify the accuracy of any claims against reliable sources, noting whether it is
+        supported, partially supported, unverified, or false, and provide short reasoning.
+        """,
+    name: "fact_checker",
+    description: "Fact-checks reliable sources and flags inaccuracies.",
+    [new HostedWebSearchTool()]);
+
+AIAgent reporter = new ChatClientAgent(anthropic,
+    instructions: """
+        Summarize the original essay into a single paragraph, taking into account the subsequent fact checking to correct
+        any inaccuracies. Only include facts that were confirmed by the fact checker. Omit any information that was
+        flagged as inaccurate or unverified. The summary should be clear, concise, and informative.
+        You MUST NOT provide any commentary on what you're doing. Simply output the final paragraph.
+        """,
+    name: "reporter",
+    description: "Summarize the researcher's essay into a single paragraph, focusing only on the fact checker's confirmed facts.");
+
+// Build a sequential workflow: Researcher -> Fact-Checker -> Reporter
+AIAgent workflowAgent = AgentWorkflowBuilder.BuildSequential(researcher, factChecker, reporter).AsAgent();
+
+// Run the workflow, streaming the output as it arrives.
+string? lastAuthor = null;
+await foreach (var update in workflowAgent.RunStreamingAsync(Topic))
+{
+    if (lastAuthor != update.AuthorName)
+    {
+        lastAuthor = update.AuthorName;
+        Console.ForegroundColor = ConsoleColor.Green;
+        Console.WriteLine($"\n\n** {update.AuthorName} **");
+        Console.ResetColor();
+    }
+
+    Console.Write(update.Text);
+}