[Serializable]
public class OrderForm
{
    [Prompt("What product would you like to order?")]
    public string ProductName { get; set; }
    
    [Prompt("How many units do you need?")]
    public int Quantity { get; set; }
    
    [Prompt("Please provide your shipping address")]
    public string Address { get; set; }
    
    public static IForm<OrderForm> BuildForm()
    {
        return new FormBuilder<OrderForm>()
            .Message("Welcome to the ordering bot!")
            .OnCompletion(async (context, order) => 
            {
                // 表单完成后执行的操作
                await ProcessOrderAsync(context, order);
            })
            .Build();
    }
}

private static async Task ProcessOrderAsync(IDialogContext context, OrderForm order)
{
    try
    {
        // 创建 HTTP 客户端
        using (var client = new HttpClient())
        {
            // 设置 API 基础地址
            client.BaseAddress = new Uri("https://api.example.com/");
            client.DefaultRequestHeaders.Accept.Clear();
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            
            // 将表单数据序列化为 JSON
            var json = JsonConvert.SerializeObject(order);
            var content = new StringContent(json, Encoding.UTF8, "application/json");
            
            // 发送 POST 请求
            HttpResponseMessage response = await client.PostAsync("orders", content);
            
            if (response.IsSuccessStatusCode)
            {
                await context.PostAsync("Your order has been successfully submitted!");
            }
            else
            {
                await context.PostAsync("There was an error processing your order. Please try again later.");
            }
        }
    }
    catch (Exception ex)
    {
        await context.PostAsync($"An error occurred: {ex.Message}");
    }
}

[Serializable]
public class RootDialog : IDialog<object>
{
    public async Task StartAsync(IDialogContext context)
    {
        context.Wait(MessageReceivedAsync);
    }

    private async Task MessageReceivedAsync(IDialogContext context, IAwaitable<IMessageActivity> result)
    {
        var message = await result;
        
        if (message.Text.ToLower().Contains("order"))
        {
            // 启动 FormFlow
            var orderForm = FormDialog.FromForm(OrderForm.BuildForm, FormOptions.PromptInStart);
            context.Call(orderForm, ResumeAfterOrderForm);
        }
        else
        {
            await context.PostAsync("Hi! Type 'order' to start an order.");
            context.Wait(MessageReceivedAsync);
        }
    }

    private async Task ResumeAfterOrderForm(IDialogContext context, IAwaitable<OrderForm> result)
    {
        // 表单完成后可以执行其他操作
        context.Wait(MessageReceivedAsync);
    }
}

var client = new HttpClient
{
    Timeout = TimeSpan.FromSeconds(30) // 设置为30秒
};

client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", "your-access-token");

var apiDto = new OrderApiDto
{
    Product = order.ProductName,
    Qty = order.Quantity,
    DeliveryAddress = order.Address
};
var json = JsonConvert.SerializeObject(apiDto);