C# 从Xamarin应用程序使用Rest服务

我已经使用了xamarin表单中的rest服务。但是我的listview没有显示这些。它只显示了很多空行

Rest服务响应 我的.xaml文件

---

这不是它的工作原理。现在要做的是将JSON作为原始字符串值下载，并将其放入

列表视图中

您必须将下载的字符串反序列化为.NET对象

定义如下所示的模型：

public class ApiModel
{
    [JsonProperty("prodName")]
    public string prodName { get; set; }

    [JsonProperty("qty")]
    public long qty { get; set; }

    [JsonProperty("price")]
    public long price { get; set; }
}

private async void GetProducts()
{
    HttpClient client = new HttpClient();

    var response = await client.GetStringAsync("http://myUrl/Api/Values");
    var products = JsonConvert.DeserializeObject<ApiModel[]>(response);
    ProductsListView.ItemsSource = products;
}

然后得到如下结果：

public class ApiModel
{
    [JsonProperty("prodName")]
    public string prodName { get; set; }

    [JsonProperty("qty")]
    public long qty { get; set; }

    [JsonProperty("price")]
    public long price { get; set; }
}

private async void GetProducts()
{
    HttpClient client = new HttpClient();

    var response = await client.GetStringAsync("http://myUrl/Api/Values");
    var products = JsonConvert.DeserializeObject<ApiModel[]>(response);
    ProductsListView.ItemsSource = products;
}

private async void GetProducts（）
{
HttpClient=新的HttpClient（）；
var response=wait client.GetStringAsync（“http://myUrl/Api/Values");
var products=JsonConvert.DeserializeObject
这不是它的工作方式。您现在要做的是将JSON作为原始字符串值下载，并将其放入
列表视图中

您必须将下载的字符串反序列化为.NET对象

定义如下所示的模型：

public class ApiModel
{
    [JsonProperty("prodName")]
    public string prodName { get; set; }

    [JsonProperty("qty")]
    public long qty { get; set; }

    [JsonProperty("price")]
    public long price { get; set; }
}

private async void GetProducts()
{
    HttpClient client = new HttpClient();

    var response = await client.GetStringAsync("http://myUrl/Api/Values");
    var products = JsonConvert.DeserializeObject<ApiModel[]>(response);
    ProductsListView.ItemsSource = products;
}

然后得到如下结果：

public class ApiModel
{
    [JsonProperty("prodName")]
    public string prodName { get; set; }

    [JsonProperty("qty")]
    public long qty { get; set; }

    [JsonProperty("price")]
    public long price { get; set; }
}

private async void GetProducts()
{
    HttpClient client = new HttpClient();

    var response = await client.GetStringAsync("http://myUrl/Api/Values");
    var products = JsonConvert.DeserializeObject<ApiModel[]>(response);
    ProductsListView.ItemsSource = products;
}

private async void GetProducts（）
{
HttpClient=新的HttpClient（）；
var response=wait client.GetStringAsync（“http://myUrl/Api/Values");
var products=JsonConvert.DeserializeObject
问题是您正在返回一个json结果，并试图将其推送到listView ItemSource中。请先使用将json转换为产品

给定的

public class Product
{
    public string prodName { get; set; }
    public double qty { get; set; }
    public double price { get; set; }
}

示例

private async void GetProducts()
{
    HttpClient client = new HttpClient();

    var response = await client.GetStringAsync("http://myUrl/Api/Values");
    var products = JsonConvert.DeserializeObject<List<Product>>(response);
    ProductsListView.ItemsSource = products;
}

private async void GetProducts（）
{
HttpClient=新的HttpClient（）；
var response=wait client.GetStringAsync（“http://myUrl/Api/Values");
var products=JsonConvert.DeserializeObject（响应）；
ProductsListView.ItemsSource=产品；
}
问题在于，您正在返回一个json结果，并试图将其推送到listView ItemSource。请先使用将json转换为产品

给定的

public class Product
{
    public string prodName { get; set; }
    public double qty { get; set; }
    public double price { get; set; }
}

示例

private async void GetProducts()
{
    HttpClient client = new HttpClient();

    var response = await client.GetStringAsync("http://myUrl/Api/Values");
    var products = JsonConvert.DeserializeObject<List<Product>>(response);
    ProductsListView.ItemsSource = products;
}

private async void GetProducts（）
{
HttpClient=新的HttpClient（）；
var response=wait client.GetStringAsync（“http://myUrl/Api/Values");
var products=JsonConvert.DeserializeObject（响应）；
ProductsListView.ItemsSource=产品；
}