app.cs

#:package Azure.AI.OpenAI@2.8.0-beta.1
#:package Azure.Identity@1.18.0
#:package Microsoft.Extensions.AI@10.3.0
#:package Microsoft.Extensions.AI.OpenAI@10.3.0
#:package Microsoft.Extensions.Configuration.UserSecrets@10.0.3
#:property UserSecretsId=genai-beginners-dotnet

using Azure.AI.OpenAI;
using Azure.Identity;
using Microsoft.Extensions.AI;
using Microsoft.Extensions.Configuration;
using System.Text;

var config = new ConfigurationBuilder().AddUserSecrets<Program>().Build();
var endpoint = config["AzureOpenAI:Endpoint"]
    ?? throw new InvalidOperationException("Set AzureOpenAI:Endpoint in User Secrets. See: https://github.com/microsoft/Generative-AI-for-beginners-dotnet/blob/main/01-IntroductionToGenerativeAI/setup-azure-openai.md");
var deploymentName = config["AzureOpenAI:Deployment"] ?? "gpt-5-mini";

IChatClient client = new AzureOpenAIClient(new Uri(endpoint), new AzureCliCredential())
        .GetChatClient(deploymentName)
        .AsIChatClient();

// here we're building the prompt
StringBuilder prompt = new StringBuilder();
prompt.AppendLine("You will analyze the sentiment of the following product reviews. Each line is its own review. Output the sentiment of each review in a bulleted list and then provide a generate sentiment of all reviews. ");
prompt.AppendLine("I bought this product and it's amazing. I love it!");
prompt.AppendLine("This product is terrible. I hate it.");
prompt.AppendLine("I'm not sure about this product. It's okay.");
prompt.AppendLine("I found this product based on the other reviews. It worked for a bit, and then it didn't.");

// send the prompt to the model and wait for the text completion
var response = await client.GetResponseAsync(prompt.ToString());

// display the response
Console.WriteLine(response.Text);