private String dayDifPutPresent()
{
// get present date from system
DateTime dt = DateTime.Now;
IsConstiant date_conv = new IsConstiant();
string today = ConvertDateCalendar(dt, "en-US");
//DateTime presentDate = Convert.ToDateTime(today);
DateTime presentDate = DateTime.ParseExact(today, "M/d/yyyy", System.Globalization.CultureInfo.InvariantCulture);
// get instalation date
RegistryKey regkey = Registry.CurrentUser;
regkey = regkey.CreateSubKey(globalPath); //path
string Br = (string)regkey.GetValue("Install");
DateTime installationDate = DateTime.ParseExact(Br, "M/d/yyyy", System.Globalization.CultureInfo.InvariantCulture);
TimeSpan diff = presentDate.Subtract(installationDate); //first.Subtract(second);
int totaldays = (int)diff.TotalDays;
// special check if user chenge date in system
string usd = (string)regkey.GetValue("Use");
DateTime lastUse = DateTime.ParseExact(usd, "M/d/yyyy", System.Globalization.CultureInfo.InvariantCulture);
//Convert.ToDateTime(usd);
TimeSpan diff1 = presentDate.Subtract(lastUse); //first.Subtract(second);
int useBetween = (int)diff1.TotalDays;
if (useBetween >= 0)
{
if (totaldays < 0)
{
return("Error"); // if user change date in system like date set before installation
}
else if (totaldays >= 0 && totaldays <= 100)
{
regkey.SetValue("Use", today);
upd_use(today);
return(Convert.ToString(100 - totaldays));
}//how many days remaining
else
{
regkey.SetValue("Use", today);
upd_use(today);
return("Expired"); //Expired
}
}
else
{
return("Error"); // if user change date in system
}
}
private void firstTime()
{
RegistryKey regkey = Registry.CurrentUser;
regkey = regkey.CreateSubKey(globalPath); //path
IsConstiant date_conv = new IsConstiant();
string toDate = date_conv.ConvertDateCalendar(DateTime.Now, "en-US");
// DateTime dt = DateTime.Now;
string onlyDate = date_conv.ConvertDateCalendar(DateTime.Now, "en-US"); // get only date not time
regkey.SetValue("Install", onlyDate); //Value Name,Value Data
regkey.SetValue("Use", onlyDate); //Value Name,Value Data
}
public string instailserual()
{
// string con_ss = File.ReadAllText(Application.StartupPath + "\\conn.txt");
string sql;
SqlCommand cm;
sql = "select * from Serial_Table";
SqlDataReader dr;
try
{
Declaration dec;
dec = new Declaration();
// = new Declaration();
if (dec.Activity(getMACAdress()) == "No")
{
DialogResult ds = MessageBox.Show("معذرة هذا الجهاز غير مصرح له بتشغيل النظام يرجى التواصل مع مدير النظام" + "/n" + EncryptionClass.Encrypt("nanoahmedmohammmadnaelzadf18", getMACAdress() + "t3xzq162") + "\n" + "هل تريد انشاء ملف طلب تصريح?", "الامان والحماية", MessageBoxButtons.YesNo, MessageBoxIcon.Asterisk);
if (ds == DialogResult.Yes)
{
string filename = "Save Here";
SaveFileDialog sf = new SaveFileDialog();
sf.FileName = filename;
if (sf.ShowDialog() == DialogResult.OK)
{
string savePath = Path.GetDirectoryName(sf.FileName);
FileStream f = new FileStream(savePath + "\\Declaration.txt", FileMode.OpenOrCreate, FileAccess.ReadWrite);
// StreamWriter stw = new StreamWriter(f);
byte[] da = new byte[255];
da = ASCIIEncoding.Unicode.GetBytes(EncryptionClass.Encrypt("nanoahmedmohammmadnaelzadf18", getMACAdress() + "t3xzq162") + ":" + getMACAdress());
f.Write(da, 0, da.Length);
f.Close();
}
}
return("");
}
day = int.Parse(dec.day);
// con = new SqlConnection(" Data Source = (LocalDB)\\MSSQLLocalDB; AttachDbFilename =" + con_db + "; Integrated Security = True; Connect Timeout = 30;");
DBConnection db = new DBConnection();
conn = db.masterConn();
cm = new SqlCommand(sql, conn);
/////////////////////////////////////////////
// Connect = new SqlConnection(connStr);
try
{
if (conn.State == ConnectionState.Closed)
{
conn.Open();
}
dr = cm.ExecuteReader();
if (dr.Read())
{
key_serial = getMACAdress();
// instail = EncryptionClass.Decrypt (dr["Install"].ToString(), "t3xzq162");
instail = dec.dateinstail;
use = EncryptionClass.Decrypt(dr["use_date"].ToString(), "t3xzq162");
dr.Close();
conn.Close();
chek = true;
return(key_serial);
}
else
{//"8/3/2019"
key_serial = getMACAdress();
dr.Close();
IsConstiant date_conv = new IsConstiant();
// string onlyDate = date_conv.ConvertDateCalendar(DateTime.Now, "en-US");
string onlyDate = dec.dateinstail;//date_conv.ConvertDateCalendar(DateTime.Now, "en-US");
//MessageBox.Show(onlyDate);
cm = new SqlCommand("insert into Serial_Table values('" + key_serial + "','','" + EncryptionClass.Encrypt(onlyDate, "t3xzq162") + "','" + EncryptionClass.Encrypt(onlyDate, "t3xzq162") + "')", conn);
cm.ExecuteNonQuery();
conn.Close();
chek = false;
instail = onlyDate;
use = onlyDate;
//MessageBox.Show(onlyDate);
return(key_serial);
}
}
catch
{
// FormConnet ff = new FormConnet("data");
//ff.ShowDialog();
}
}
catch (Exception ex)
{
MessageBox.Show("معذرة هذا الجهاز غير مصرح له بتشغيل النظام يرجى التواصل مع مدير النظام" + "/n" + EncryptionClass.Encrypt("nanoahmedmohammmadnaelzadf18", getMACAdress() + "t3xzq162") + "/n" + ex.Message, "Product key", MessageBoxButtons.OK, MessageBoxIcon.Error);
//if (ds == DialogResult.Yes)
//{
}
///////////////////////////////////////
conn.Close();
return("");
}