C#与微信API交互的代码

在C#中与微信API交互通常需要使用第三方库，例如WxNet或DengZi.WX，它们简化了对微信开放平台接口的操作。以下是一个简化的示例，展示如何通过WxNet进行OAuth授权：

using WxNet;

// 创建微信客户端实例
var client = new WxNetClient(new ApiConfig
{
    AppId = "your_app_id", // 微信AppID
    AppSecret = "your_app_secret", // 微信AppSecret
});

// 获取授权地址（用户授权后会跳转到这里）
string authorizeUrl = client.GetAuthCodeRedirectUri("https://yourredirect.com", state: "your_state");

// 用户点击授权链接并返回后，获取code换取access_token
string code = Request.QueryString["code"];
AccessTokenResult accessTokenResult = await client.GetAccessTokenAsync(code);

// 现在你可以使用accessTokenResult.AccessToken进一步操作微信API，比如发送消息、获取用户信息等

相关问题

c# 企业微信api

C# 中使用企业微信 API 可以通过发送 HTTP 请求来与企业微信进行交互。你可以使用 HttpClient 类来发送请求，并通过调用企业微信 API 的不同接口来实现各种功能，如发送消息、获取用户信息等。

首先，你需要在企业微信后台注册一个应用，并获取到应用的相关信息，包括企业ID、应用ID、应用密钥等。

下面是一个示例代码，演示如何使用 C# 发送消息到企业微信：

using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        string corpId = "your-corp-id";
        string appSecret = "your-app-secret";
        string agentId = "your-agent-id";

        string accessToken = await GetAccessToken(corpId, appSecret);
        if (!string.IsNullOrEmpty(accessToken))
        {
            await SendMessage(accessToken, agentId, "user-id", "Hello from C#!");
        }
    }

    static async Task<string> GetAccessToken(string corpId, string appSecret)
    {
        using (HttpClient client = new HttpClient())
        {
            string url = $"https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid={corpId}&corpsecret={appSecret}";
            HttpResponseMessage response = await client.GetAsync(url);
            if (response.IsSuccessStatusCode)
            {
                string responseBody = await response.Content.ReadAsStringAsync();
                // 解析响应获取 access_token
                // 注意：实际开发中，建议将 access_token 缓存在本地，并定期更新
                // 这里仅为示例，直接返回获取到的 access_token
                return "your-access-token";
            }
            else
            {
                Console.WriteLine($"Failed to get access token. Status code: {response.StatusCode}");
                return null;
            }
        }
    }

    static async Task SendMessage(string accessToken, string agentId, string userId, string message)
    {
        using (HttpClient client = new HttpClient())
        {
            string url = $"https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token={accessToken}";
            string requestBody = $"{{\"touser\": \"{userId}\", \"agentid\": \"{agentId}\", \"msgtype\": \"text\", \"text\": {{\"content\": \"{message}\"}}}}";
            StringContent content = new StringContent(requestBody, Encoding.UTF8, "application/json");
            HttpResponseMessage response = await client.PostAsync(url, content);
            if (response.IsSuccessStatusCode)
            {
                Console.WriteLine("Message sent successfully.");
            }
            else
            {
                Console.WriteLine($"Failed to send message. Status code: {response.StatusCode}");
            }
        }
    }
}

请替换代码中的 `your-corp-id`、`your-app-secret`、`your-agent-id` 和 `user-id` 分别为你的企业ID、应用密钥、应用ID和发送消息的用户ID。这个示例代码是使用企业微信的消息推送接口发送文本消息给指定用户。

希望这个示例能帮到你，如果有其他问题，请随时提问！

c#微信支付，如何与小程序交互实例代码

以下是一个简单的C#代码示例，用于与小程序进行微信支付的交互：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Web.Script.Serialization;
using System.Xml;

namespace WeChatPayDemo
{
    public class WeChatPayHelper
    {
        //微信支付的API地址
        private const string WECHAT_PAY_API = "https://api.mch.weixin.qq.com/pay/unifiedorder";

        //微信支付商户号
        private const string WECHAT_PAY_MCHID = "XXXXXXXXXXXX";

        //微信支付密钥
        private const string WECHAT_PAY_KEY = "XXXXXXXXXXXX";

        //小程序的AppID
        private const string WECHAT_APPID = "XXXXXXXXXXXX";

        //生成随机字符串
        private static string GenerateNonceStr()
        {
            return Guid.NewGuid().ToString().Replace("-", "").Substring(0, 32);
        }

        //生成签名
        private static string GenerateSign(Dictionary<string, string> data)
        {
            var list = data.ToList();
            list.Sort((a, b) => string.Compare(a.Key, b.Key, StringComparison.Ordinal));
            var builder = new StringBuilder();
            foreach (var item in list)
            {
                if (!string.IsNullOrEmpty(item.Value))
                {
                    builder.Append(item.Key).Append('=').Append(item.Value).Append('&');
                }
            }
            builder.Append("key=").Append(WECHAT_PAY_KEY);
            return MD5Helper.MD5(builder.ToString()).ToUpper();
        }

        //生成XML数据
        private static string GenerateXml(Dictionary<string, string> data)
        {
            var builder = new StringBuilder();
            builder.Append("<xml>");
            foreach (var item in data)
            {
                builder.Append("<").Append(item.Key).Append(">");
                builder.Append("<![CDATA[").Append(item.Value).Append("]]>");
                builder.Append("</").Append(item.Key).Append(">");
            }
            builder.Append("</xml>");
            return builder.ToString();
        }

        //发送HTTP请求，并返回响应数据
        private static string SendHttpRequest(string url, string data)
        {
            var request = WebRequest.CreateHttp(url);
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
            var bytes = Encoding.UTF8.GetBytes(data);
            request.ContentLength = bytes.Length;
            using (var stream = request.GetRequestStream())
            {
                stream.Write(bytes, 0, bytes.Length);
            }
            var response = request.GetResponse();
            using (var reader = new System.IO.StreamReader(response.GetResponseStream()))
            {
                return reader.ReadToEnd();
            }
        }

        //生成微信支付订单信息，并返回给小程序端
        public static string GenerateWeChatPayOrder(string openid, string orderId, int totalFee, string clientIP, string notifyUrl)
        {
            var nonceStr = GenerateNonceStr();
            var timestamp = DateTime.Now.ToUniversalTime().ToString("yyyyMMddHHmmss");
            var data = new Dictionary<string, string>
            {
                {"appid", WECHAT_APPID},
                {"mch_id", WECHAT_PAY_MCHID},
                {"nonce_str", nonceStr},
                {"body", "测试商品"},
                {"out_trade_no", orderId},
                {"total_fee", (totalFee * 100).ToString()},
                {"spbill_create_ip", clientIP},
                {"notify_url", notifyUrl},
                {"trade_type", "JSAPI"},
                {"openid", openid},
                {"sign_type", "MD5"},
                {"time_start", timestamp},
                {"time_expire", DateTime.Now.AddMinutes(30).ToUniversalTime().ToString("yyyyMMddHHmmss")},
            };
            data.Add("sign", GenerateSign(data));
            var xml = GenerateXml(data);
            var responseXml = SendHttpRequest(WECHAT_PAY_API, xml);
            var doc = new XmlDocument();
            doc.LoadXml(responseXml);
            var prepayId = doc.SelectSingleNode("/xml/prepay_id").InnerText;
            var package = $"prepay_id={prepayId}";
            var data2 = new Dictionary<string, string>
            {
                {"appId", WECHAT_APPID},
                {"nonceStr", nonceStr},
                {"package", package},
                {"signType", "MD5"},
                {"timeStamp", timestamp},
            };
            data2.Add("paySign", GenerateSign(data2));
            var serializer = new JavaScriptSerializer();
            return serializer.Serialize(data2);
        }
    }
}

这是一个简单的示例，仅供参考。具体的实现方式可能会因为不同的业务需求而有所变化，可以根据实际情况进行调整。