private string[] LicenseInformation()
{
string[] information = { "", "", "", "", "", "" };
var path = Application.StartupPath + @"\bin\";
string filename = "License.lic";
string[] lines = File.ReadAllLines(path + filename);
var arr = lines[7].Split(':');
string dec = ClsTripleDES.Decrypt(arr[1].ToString());
var licarr = dec.Split(',');
information[0] = licarr[3];
information[1] = licarr[4];
information[2] = licarr[0];
information[3] = licarr[1];
information[4] = licarr[5];
return(information);
}
private bool CheckTrail()
{
try
{
var path = Application.StartupPath + @"\bin\";
string filename = "License.lic";
string[] lines = File.ReadAllLines(path + filename);
var arr = lines[7].Split(':');
string dec = ClsTripleDES.Decrypt(arr[1].ToString());
var licarr = dec.Split(',');
string trail = licarr[5].ToString();
bool check = Convert.ToBoolean(trail);
if (check)
{
return(true);
}
if (!check)
{
return(false);
}
}
catch (Exception ex)
{
MessageBox.Show("An error occured: " + ex.Message.ToString(), "Error - Student Management System", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
return(false);
}
private int TrailDaysRemaining()
{
try
{
var path = Application.StartupPath + @"\bin\";
string filename = "License.lic";
string[] lines = File.ReadAllLines(path + filename);
var arr = lines[7].Split(':');
string dec = ClsTripleDES.Decrypt(arr[1].ToString());
var licarr = dec.Split(',');
int date = DateTime.Now.Day;
int month = DateTime.Now.Month;
int year = DateTime.Now.Year;
CultureInfo enUS = new CultureInfo("en-US");
DateTime licEndDate;
bool check = DateTime.TryParseExact(licarr[1].ToString(), "dd/MM/yyyy", enUS, DateTimeStyles.None, out licEndDate);
DateTime now = new DateTime(year, month, date);
double day = (licEndDate - now).TotalDays;
int daysremaining = Convert.ToInt32(day);
return(daysremaining);
}
catch (Exception)
{
}
return(0);
}
private bool LicenseValid()
{
try
{
var path = Application.StartupPath + @"\bin\";
string filename = "License.lic";
string[] lines = File.ReadAllLines(path + filename);
var arr = lines[7].Split(':');
string dec = ClsTripleDES.Decrypt(arr[1].ToString());
var licarr = dec.Split(',');
CultureInfo enUS = new CultureInfo("en-US");
DateTime licEndDate;
bool check = DateTime.TryParseExact(licarr[1].ToString(), "dd/MM/yyyy", enUS, DateTimeStyles.None, out licEndDate);
var guid = db.Randoms.Where(c => c.ID == 18).FirstOrDefault();
var owner = db.Randoms.Where(c => c.ID == 5).FirstOrDefault();
var school = db.Randoms.Where(c => c.ID == 1).FirstOrDefault();
string LicGuid = licarr[2].ToString();
string LicOwner = licarr[3].ToString();
string LicSchool = licarr[4].ToString();
if (guid.Text.ToString() == LicGuid)
{
if (LicOwner == owner.Text.ToString())
{
if (LicSchool == school.Text.ToString())
{
return(true);
}
}
}
}
catch (Exception)
{
MessageBox.Show("Error! License Not Valid! Contact your Developer!", "Error - Student Management System", MessageBoxButtons.OK, MessageBoxIcon.Error);
Application.Exit();
}
return(false);
}
private string LicenseEnds()
{
var path = Application.StartupPath + @"\bin\";
string filename = "License.lic";
string[] lines = File.ReadAllLines(path + filename);
var arr = lines[7].Split(':');
string dec = ClsTripleDES.Decrypt(arr[1].ToString());
var licarr = dec.Split(',');
return(licarr[1].ToString());
}
private void button1_Click(object sender, EventArgs e)
{
textBox2.Text = ClsTripleDES.Decrypt(textBox1.Text);
}