最近的工作需要使用Bot Framework调用原有的WebAPI查询数据，查找了一些方法，大部分都是使用HttpClient调用的，现时贴出代码供参考

using System;using System.Collections.Generic;using System.Linq;using System.Net.Http;using System.Threading.Tasks;using System.Web;using System.Text;using Newtonsoft.Json;using System.Net;namespace esquel_LPD_Bot.LPDService{    public class GarmentStyleHelper    {        public async Task
     
       GarmentStyleSearch(string pi_GarmentStyleNo)        {            string l_returnValue = string.Empty;            string l_APIUrl = Common.ConfigHelper.GetConfigValue("LPD-GarmentStyleSearchAPIUrl");            Common.LPDAuthHelper LPDAuthClass = new Common.LPDAuthHelper();            try            {                if(string.IsNullOrEmpty( LPDAuthClass.UserName)|| string.IsNullOrEmpty(LPDAuthClass.UserName))                {                    throw new Exception("LPD Project Auth User Name Or Password Is Empty .");                }                if (!string.IsNullOrEmpty(l_APIUrl) && !string.IsNullOrEmpty(pi_GarmentStyleNo))                {                    var request = new Model.SelectionFilter()                    {                        FilterType = Model.SelectionFilter.FilterTypeLeaf,                        Filters = new Model.SelectionFilter[] { },                        AttributeName = "item_number",                        FilterValue = pi_GarmentStyleNo                    };                    //--------------------------------------------------------------------------------------------                    var handler = new HttpClientHandler()                    {                        AutomaticDecompression = System.Net.DecompressionMethods.GZip                    };                    //handler.UseDefaultCredentials = true;//use default network利用的用户本机的网络，但因为需要布署到服务器，所以使用以下这一句                    handler.Credentials=new NetworkCredential(LPDAuthClass.UserName, LPDAuthClass.PassWord);//设定权限，这一句比较痛苦，找了很久                    using (var client = new HttpClient(handler))                    {                        client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));                                               var response = await client.PostAsync(l_APIUrl, new StringContent(JsonConvert.SerializeObject(request).ToString(), Encoding.UTF8, "application/json"));                        response.EnsureSuccessStatusCode();                        string l_getreturn = await response.Content.ReadAsStringAsync();                        l_returnValue = l_getreturn;                    }                }            }            catch (Exception ex)            {                            }            return l_returnValue;        }    }}
     

 参考地址：

http://www.cnblogs.com/validvoid/p/demystifying-httpclient-apis-in-the-uwp.html 使用身份验证凭据

http://www.cnblogs.com/lori/p/4045633.html