将 json 发布到 xamarin webclient api答案

【问题标题】：Post json to xamarin webclient api将 json 发布到 xamarin webclient api
【发布时间】：2014-09-11 16:07:42
【问题描述】：

我想将一个 jsonobject 发布到我的 webapi。使用普通的 C# 代码，我会在我的 httpClient 对象上使用 PostAsJsonAsync。但这似乎不受 xamarin 支持。所以我的问题是如何使用 xamarin webclient 或 webrequest 将 json 发布到我的 api？

这是我现在返回 null 的代码...

   protected async override void OnResume()
    {
        base.OnResume();

        var clientRequest = new ResourceByNameRequest
            {
                Name = "G60",
                UserId = "1"
            };
        HttpContent myContent = new StringContent(clientRequest.ToString());
        try
        {
            using (var client = new HttpClient())
            {
                client.BaseAddress = new Uri("XXX");
                var cancellationToken = new CancellationToken();
                var response = client.PostAsync("/api/Resource/ResourceByName", myContent, cancellationToken).Result;
                var result = await response.Content.ReadAsStreamAsync();
                //return result;

            }
        }
        catch (Exception)
        {

            throw;
        }
    }

【问题讨论】：

标签： c# android json asp.net-web-api xamarin

【解决方案1】：

试试这样的：

using System.Runtime.Serialization;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
//...

protected override void OnResume()
{

var request = HttpWebRequest.Create("Your_URL_XXX");
request.ContentType = "application/json";
request.Method = "POST";


var clientRequest = new ResourceByNameRequest
{
    Name = "G60",
    UserId = "1"
};

using (var writer = new StreamWriter(request.GetRequestStream()))
{
    writer.Write(clientRequest.ToString());
}

try
{
    using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{

string error = "";
if (response.StatusCode != HttpStatusCode.OK)
error = string.Format("Error fetching data. Server returned status code: {0} | Description: {1}", response.StatusCode, response.StatusDescription);
using (StreamReader reader = new StreamReader(response.GetResponseStream()))

{
    var content = reader.ReadToEnd();
    if (string.IsNullOrWhiteSpace(content))
    {
        strResponse = "Response contained empty body...";
    }
    else
    {
        var cont = JObject.Parse(content);
        YOUR_OBJECT_RESPONSE.PROP1 = cont["Prop1"].NullSafeToString();
        YOUR_OBJECT_RESPONSE.PROP2 = cont["Prop2"].NullSafeToString();
        //...

    }
}
}
} 
    catch (WebException wex)
    {
    var pageContent = new   StreamReader(wex.Response.GetResponseStream()).ReadToEnd();   
    }
}

【讨论】：