NET: How to disable think mode when calling the ollama model

[williamlzw]

Microsoft.SemanticKernel:

public static async Task Main()
{
    Console.OutputEncoding = System.Text.Encoding.UTF8;
    var builder = Kernel.CreateBuilder();
    var modelId = "gemma4:e4b-it-q4_K_M";
    var endpoint = new Uri("http://localhost:11434");

    builder.Services.AddOllamaChatCompletion(modelId, endpoint);
    var kernel = builder.Build();
    var chatCompletionService = kernel.GetRequiredService<IChatCompletionService>();

    string prompt = "c#写一个计算当前月天数的方法";
    var executionSettings = new OllamaPromptExecutionSettings
    {
        FunctionChoiceBehavior = FunctionChoiceBehavior.Auto(autoInvoke: false),
    };
    var response = await chatCompletionService.GetChatMessageContentAsync(prompt, kernel: kernel, executionSettings: executionSettings);
    Console.Write(response.Content);
}

How to disable think mode when calling the ollama model?

It is recommended to add a method like chatOptions.AddOllamaOption(OllamaOption.Think, false);
Microsoft.Extensions.AI:

public async static Task Main()
{
    OllamaApiClient ollamaClient = new OllamaApiClient(new Uri("http://localhost:11434/"), "gemma4:e4b-it-q4_K_M");

    // 3. 调用 Ollama API
    var client = new Microsoft.Extensions.AI.ChatClientBuilder(ollamaClient)
        .UseFunctionInvocation()
        .Build();

    ChatOptions chatOptions = new()
    {
        Tools = [AIFunctionFactory.Create(QueryDateTime), AIFunctionFactory.Create(SaveFile), AIFunctionFactory.Create(ReadFile)],
    };
    chatOptions.AddOllamaOption(OllamaOption.Think, false);//Disable think
    await foreach (var res in client.GetStreamingResponseAsync("c#写一个计算当前月天数的方法", chatOptions))//，
    {
        Console.Write(res.Text);
    }
}