C#은 WeChat 인터페이스를 사용하여 WeChat 포털 애플리케이션을 개발합니다.

/// <summary>
    /// 微信接口。统一接收并处理信息的入口。
    /// </summary>
    public class wxapi : IHttpHandler
    {
        public void ProcessRequest(HttpContext context)
        {
            string postString = string.Empty;
            if (HttpContext.Current.Request.HttpMethod.ToUpper() == "POST")
            {
                using (Stream stream = HttpContext.Current.Request.InputStream)
                {
                    Byte[] postBytes = new Byte[stream.Length];
                    stream.Read(postBytes, 0, (Int32)stream.Length);
                    postString = Encoding.UTF8.GetString(postBytes);
                }

                if (!string.IsNullOrEmpty(postString))
                {
                    Execute(postString);
                }
            }
            else
            {
                Auth(); //微信接入的测试
            }
        }

string token = "****";//你申请的时候填写的Token
string echoString = HttpContext.Current.Request.QueryString["echoStr"];
string signature = HttpContext.Current.Request.QueryString["signature"];
string timestamp = HttpContext.Current.Request.QueryString["timestamp"];
string nonce = HttpContext.Current.Request.QueryString["nonce"];

/// <summary>
        /// 成为开发者的第一步，验证并相应服务器的数据
        /// </summary>
        private void Auth()
        {
            string token = ConfigurationManager.AppSettings["WeixinToken"];//从配置文件获取Token
            if (string.IsNullOrEmpty(token))
            {
                LogTextHelper.Error(string.Format("WeixinToken 配置项没有配置！"));
            }
            string echoString = HttpContext.Current.Request.QueryString["echoStr"];
            string signature = HttpContext.Current.Request.QueryString["signature"];
            string timestamp = HttpContext.Current.Request.QueryString["timestamp"];
            string nonce = HttpContext.Current.Request.QueryString["nonce"];
            if (new BasicApi().CheckSignature(token, signature, timestamp, nonce))
            {
                if (!string.IsNullOrEmpty(echoString))
                {
                    HttpContext.Current.Response.Write(echoString);
                    HttpContext.Current.Response.End();
                }
            }
        }

/// <summary>
        /// 验证微信签名
        /// </summary>
        public bool CheckSignature(string token, string signature, string timestamp, string nonce)
        {
            string[] ArrTmp = { token, timestamp, nonce };
            Array.Sort(ArrTmp);
            string tmpStr = string.Join("", ArrTmp);
            tmpStr = FormsAuthentication.HashPasswordForStoringInConfigFile(tmpStr, "SHA1");
            tmpStr = tmpStr.ToLower();
            if (tmpStr == signature)
            {
                return true;
            }
            else
            {
                return false;
            }
        }