如何在Xamarin.Forms中正确地将字符串id传递给API控制器

<StackLayout>
    <Entry x:Name="IdEntry" Placeholder="请输入id" />
    <Button Text="提交" Clicked="SubmitButton_Clicked" />
</StackLayout>

private async void SubmitButton_Clicked(object sender, EventArgs e)
{
    string id = IdEntry.Text;

    HttpClient client = new HttpClient();
    string apiUrl = "https://api.example.com/controller?id=" + id;
    HttpResponseMessage response = await client.GetAsync(apiUrl);

    if (response.IsSuccessStatusCode)
    {
        string result = await response.Content.ReadAsStringAsync();
        // 处理返回结果
    }
    else
    {
        // 处理请求失败的情况
    }
}

[Route("api/controller")]
[ApiController]
public class MyController : ControllerBase
{
    [HttpGet]
    public IActionResult Get(string id)
    {
        // 根据id执行相应的业务逻辑
        // 返回处理结果
    }
}