static LisenceHelper() { //解析Lisence //本机机器码 string serialNo = WMIHelper.GetDiskSerialNumber() + WMIHelper.GetCPUSerialNumber(); if (serialNo.Length >= 24) { LocalMachineNumber = serialNo.Substring(0, 24); } else { LocalMachineNumber = serialNo.PadRight(24 - serialNo.Length, '0'); } string fileName = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "lisence"); if (File.Exists(fileName) == false) { IsLisenceFileExist = false; return; } IsLisenceFileExist = true; string resutl = ""; using (var fs = new FileStream(fileName, FileMode.Open)) { byte[] data = new byte[fs.Length]; fs.Read(data, 0, data.Length); resutl = Encoding.UTF8.GetString(data); } string json = RSAHelper.PublicKeyDecrypt(xmlPublicKey, resutl); object objLicense = JsonConvert.DeserializeObject(json); JObject jobj = objLicense as JObject; Type = jobj["Type"].ToString(); MachineNumber = jobj["MachineNumber"].ToString(); ExpiredDate = jobj["ExpiredDate"].ToString(); CreationDate = jobj["CreationDate"].ToString(); }