xamarin 表单从 django rest 框架解析 JSON

Question

我可以在 django 网站上成功注册我的 xamarin forms 应用程序，如果用户名或电子邮件已经存在，我会收到来自 django rest 框架的 http 响应，格式如下：

{
"username": [
    "account with this username already exists."
],
"email": [
    "account with this email already exists."
]

}

我想在没有用户名和电子邮件的显示警报中显示这些错误。只有错误文本（例如：具有此用户名的帐户已存在或具有此电子邮件的帐户已存在）我尝试以多种方式对其进行解析，但均无效。我怎样才能实现它？

我的应用中的代码：

HttpClient client = new HttpClient();
        var values = new Dictionary<string, string>
        {
            { "username", EntryUsername.Text },
            { "email", EntryEmail.Text },
            { "password", EntryPassword1.Text },
            { "password2", EntryPassword2.Text }
        };

        var content = new FormUrlEncodedContent(values);

        var response = await client.PostAsync("http://192.168.0.101:8000/api/account/register", content);

        var responseString = await response.Content.ReadAsStringAsync();

Answer 1

使用Newtonsoft

var data = "{\"username\": [\"account with this username already exists.\"],\"email\": [\"account with this email already exists.\"]}";

var obj = JObject.Parse(data);
    
Console.WriteLine(obj["username"][0]);
Console.WriteLine(obj["email"][0]);