商家转账到零钱 c#

根据提供的引用内容，我们可以使用微信支付API实现商家转账到零钱。以下是C#代码示例：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;

namespace WeChatPayDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            //微信支付分配的商户号
            string mchId = "your_mch_id";
            //微信支付分配的APPID
            string appId = "your_app_id";
            //微信支付分配的密钥
            string key = "your_key";
            //随机字符串
            string nonceStr = Guid.NewGuid().ToString().Replace("-", "");
            //商户订单号
            string partnerTradeNo = "your_partner_trade_no";
            //用户openid
            string openid = "your_openid";
            //转账金额，单位为分
            int amount = 100;
            //转账描述
            string description = "your_description";
            //IP地址
            string spbillCreateIp = "your_spbill_create_ip";

            //构造参数
            Dictionary<string, string> paras = new Dictionary<string, string>();
            paras.Add("mch_appid", appId);
            paras.Add("mchid", mchId);
            paras.Add("nonce_str", nonceStr);
            paras.Add("partner_trade_no", partnerTradeNo);
            paras.Add("openid", openid);
            paras.Add("check_name", "NO_CHECK");
            paras.Add("amount", amount.ToString());
            paras.Add("desc", description);
            paras.Add("spbill_create_ip", spbillCreateIp);

            //生成签名
            string sign = GenerateSign(paras, key);

            //构造XML请求参数
            StringBuilder sb = new StringBuilder();
            sb.Append("<xml>");
            sb.Append("<mch_appid>" + appId + "</mch_appid>");
            sb.Append("<mchid>" + mchId + "</mchid>");
            sb.Append("<nonce_str>" + nonceStr + "</nonce_str>");
            sb.Append("<partner_trade_no>" + partnerTradeNo + "</partner_trade_no>");
            sb.Append("<openid>" + openid + "</openid>");
            sb.Append("<check_name>NO_CHECK</check_name>");
            sb.Append("<amount>" + amount + "</amount>");
            sb.Append("<desc>" + description + "</desc>");
            sb.Append("<spbill_create_ip>" + spbillCreateIp + "</spbill_create_ip>");
            sb.Append("<sign>" + sign + "</sign>");
            sb.Append("</xml>");

            //调用微信支付API
            string url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers";
            string response = HttpService.Post(url, sb.ToString());

            //解析XML响应结果
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(response);
            XmlNode root = doc.SelectSingleNode("xml");
            string returnCode = root.SelectSingleNode("return_code").InnerText;
            string returnMsg = root.SelectSingleNode("return_msg").InnerText;
            string resultCode = root.SelectSingleNode("result_code").InnerText;
            string errCode = root.SelectSingleNode("err_code").InnerText;
            string errCodeDes = root.SelectSingleNode("err_code_des").InnerText;
            string paymentNo = root.SelectSingleNode("payment_no").InnerText;
            string paymentTime = root.SelectSingleNode("payment_time").InnerText;

            //输出结果
            Console.WriteLine("return_code: " + returnCode);
            Console.WriteLine("return_msg: " + returnMsg);
            Console.WriteLine("result_code: " + resultCode);
            Console.WriteLine("err_code: " + errCode);
            Console.WriteLine("err_code_des: " + errCodeDes);
            Console.WriteLine("payment_no: " + paymentNo);
            Console.WriteLine("payment_time: " + paymentTime);

            Console.ReadLine();
        }

        //生成签名
        private static string GenerateSign(Dictionary<string, string> paras, string key)
        {
            //按照参数名ASCII码从小到大排序
            var dic = paras.OrderBy(d => d.Key);
            //使用URL键值对的格式拼接成字符串
            var sb = new StringBuilder();
            foreach (var d in dic)
            {
                if (!string.IsNullOrEmpty(d.Value) && d.Key != "sign")
                {
                    sb.Append(d.Key + "=" + d.Value + "&");
                }
            }
            sb.Append("key=" + key);
            //MD5加密
            var md5 = System.Security.Cryptography.MD5.Create();
            var bs = md5.ComputeHash(Encoding.UTF8.GetBytes(sb.ToString()));
            var sb2 = new StringBuilder();
            foreach (byte b in bs)
            {
                sb2.Append(b.ToString("x2"));
            }
            return sb2.ToString().ToUpper();
        }
    }

    //HTTP请求工具类
    public class HttpService
    {
        public static string Post(string url, string postData)
        {
            System.Net.WebClient webClient = new System.Net.WebClient();
            webClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
            byte[] postDataBytes = System.Text.Encoding.UTF8.GetBytes(postData);
            byte[] responseData = webClient.UploadData(url, "POST", postDataBytes);
            string responseString = System.Text.Encoding.UTF8.GetString(responseData);
            return responseString;
        }
    }
}