winform 訪問web service

 winform 端調用

using Newtonsoft.Json;
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using System.Windows.Forms;
using System.Xml;

namespace WindowsFormsApp4
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Hashtable hashtable = new Hashtable();
            hashtable.Add("TaskNo", DateTime.Now.Ticks.ToString() + "1");

            hashtable.Add("ExecAgv", 1);
           
            var data =PostWebService("http://localhost:53283/AgvDispatchService.asmx", "HelloWorld", hashtable);

            textBox1.Text = data;
        }
        /// <summary>
        /// 需要WebService支持Post調用
        /// </summary>
        public static string PostWebService(String URL, String MethodName, Hashtable ht)
        {
            string result="";
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URL + "/" + MethodName);
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
           // request.ContentType = "application/json;charset=utf-8";
            // 憑證
            request.Credentials = CredentialCache.DefaultCredentials;
            //超時時間
            //request.Timeout = 10000;
            var PostStr = HashtableToJson(ht);
            byte[] data = System.Text.Encoding.UTF8.GetBytes(PostStr);
            request.ContentLength = data.Length;
            Stream writer = request.GetRequestStream();
            writer.Write(data, 0, data.Length);
            writer.Close();
            try
            {
                var response = request.GetResponse();
                var stream = response.GetResponseStream();
                StreamReader sr = new StreamReader(stream, Encoding.UTF8);
                String retXml = sr.ReadToEnd();

                //將string 轉化爲 XmlDocument對象的xml格式
                XmlDocument xmlDoc = new XmlDocument();
                xmlDoc.LoadXml(retXml);

                XmlNode root= xmlDoc.DocumentElement;

                result = root.FirstChild.InnerText;
                sr.Close();
            }
            catch (WebException ex)
            {
                result = ex.Response.ToString();
                throw;
            }
            return result;
        }

        private static String HashtableToPostData(Hashtable ht)
        {
            StringBuilder sb = new StringBuilder();
            foreach (string k in ht.Keys)
            {
                if (sb.Length > 0)
                {
                    sb.Append("&");
                }
                sb.Append(HttpUtility.UrlEncode(k) + "=" + HttpUtility.UrlEncode(ht[k].ToString()));
            }
            return sb.ToString();
        }
       
        private static char[] HashtableToJson(Hashtable hashtable)
        {
            string json = JsonConvert.SerializeObject(hashtable);

            char[] charArray = json.ToCharArray();
            return charArray;
        }
    }
}

 web service

using Dapper;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data.SqlClient;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.Json;
using System.Web;
using System.Web.Services;
using WebService_Saimo.Models;

namespace WebService_Saimo
{
    /// <summary>
    /// WebService1 的摘要說明
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // 若要允許使用 ASP.NET AJAX 從腳本中調用此 Web 服務，請取消註釋以下行。 
    [System.Web.Script.Services.ScriptService]
    public class AgvDispatchService : System.Web.Services.WebService
    {

        [WebMethod]
        public ResultInfo HelloWorld()
        {
            ResultInfo resultInfo = new ResultInfo();
            try
            {
                Stream stream = HttpContext.Current.Request.InputStream;//獲得json 字符流

                //還原數據流
                byte[] data = new byte[stream.Length];

                stream.Read(data, 0, (int)stream.Length);

                string jsonText = Encoding.UTF8.GetString(data);

                TaskInfo taskInfo = JsonSerializer.Deserialize<TaskInfo>(jsonText);

                string sql = "INSERT INTO Test_1 (test) Values (@CustomerName);";

                using (var connection = new SqlConnection(ConfigurationManager.ConnectionStrings["conn"].ConnectionString))
                {
                    var affectedRows = connection.Execute(sql, new { CustomerName = taskInfo.ExecAgv.ToString() });

                    if(affectedRows>0)
                    {
                        resultInfo.Result = true;
                        resultInfo.Message = "json";
                    }
                   
                    Console.WriteLine(affectedRows);

                    // var customer = connection.Query<Customer>("Select * FROM CUSTOMERS WHERE CustomerName = 'Mark'").ToList();


                }
            }
            catch (Exception ex)
            {
                resultInfo.Result = false;
                resultInfo.Message = ex.Message;
            }

            return resultInfo;
        }

        [WebMethod]
        public ResultInfo HelloWorld121(object obj)
        {
            ResultInfo resultInfo = new ResultInfo();
            resultInfo.Result = true;
            resultInfo.Message = "json";
            return resultInfo;
        }
    }
}