private bool RequestExists()
{
LicenseEntity licdb = new LicenseEntity();
try
{
var uid = licdb.Licenses.Where(c => c.SoftwareID == txtpublickey.Text).FirstOrDefault();
if (uid != null)
{
bool InProcess = uid.InProcess;
if (InProcess)
{
return(true);
}
else
{
return(false);
}
}
else
{
return(false);
}
}
catch (Exception ex)
{
MessageBox.Show("An error occured: " + ex.Message.ToString(), "Error - Student Management System", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
finally
{
licdb.Dispose();
}
}
public static void Refresh(LicenseEntity db)
{
var context = ((IObjectContextAdapter)db).ObjectContext;
var refreshableObjects = db.ChangeTracker.Entries().Select(c => c.Entity).ToList();
context.Refresh(RefreshMode.StoreWins, refreshableObjects);
}
private void Bwreg_DoWork(object sender, DoWorkEventArgs e)
{
DbEntityRefresh.Refresh(db);
LicenseEntity licdb = new LicenseEntity();
try
{
var a = licdb.Licenses.Where(c => c.SoftwareID == txtpublickey.Text).FirstOrDefault();
if (a != null)
{
var uid = db.Randoms.Where(c => c.ID == 18).FirstOrDefault();
bool IsPayement = a.IsPayment;
if (IsPayement)
{
if (txtlicense.Text == a.LicenseKey)
{
var path = Application.StartupPath + @"\bin\";
string filename = "License.lic";
string[] lines = File.ReadAllLines(path + filename);
string ency = a.LicenseStarts + "," + a.LicenseEnds + "," + uid.Text + "," + a.OwnerName + "," + a.SchoolName + "," + "False";
lines[7] = "Licensed Hash:" + ClsTripleDES.Encrypt(ency);
File.WriteAllLines(path + "/" + filename, lines);
a.InProcess = false;
licdb.Entry(a).State = System.Data.Entity.EntityState.Modified;
licdb.SaveChanges();
validate = true;
}
MessageBox.Show("Student Management System is successfully activated until " + a.LicenseEnds, "Successfully Activated", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
else
{
validate = false;
}
}
else
{
MessageBox.Show("Your request doesnot exist at our License server! Please send request then register!", "Error - Student Management System", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
catch (Exception ex)
{
MessageBox.Show("An error occured: " + ex.Message.ToString(), "Error - Student Management System", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
licdb.Dispose();
}
}
private void Bwreq_DoWork(object sender, DoWorkEventArgs e)
{
LicenseEntity licdb = new LicenseEntity();
try
{
DbEntityRefresh.Refresh(db);
if (RequestExists())
{
req = false;
MessageBox.Show("Please be patience! Your request is under proces!", "Error - Student Management Sytem", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
SoftwareIDCheck(txtpublickey.Text);
var schoolname = db.Randoms.Where(c => c.ID == 1).FirstOrDefault();
var Address = db.Randoms.Where(c => c.ID == 2).FirstOrDefault();
var Contact = db.Randoms.Where(c => c.ID == 3).FirstOrDefault();
var Email = db.Randoms.Where(c => c.ID == 4).FirstOrDefault();
var OwnerName = db.Randoms.Where(c => c.ID == 5).FirstOrDefault();
var softid = db.Randoms.Where(c => c.ID == 18).FirstOrDefault();
License lic = new License()
{
SoftwareID = softid.Text.ToString().Substring(0, 18),
SchoolName = schoolname.Text,
SchoolAddress = Address.Text,
SchoolContact = Contact.Text,
SchoolEmail = Email.Text,
OwnerName = OwnerName.Text,
IstallationDate = InstallationDate().ToString(),
InProcess = true,
IsPayment = false,
LicenseKey = LicenseKey(),
LicenseStarts = LicenseStarts(),
LicenseEnds = LicenseEnds()
};
licdb.Licenses.Add(lic);
licdb.SaveChanges();
req = true;
}
}
catch (Exception ex)
{
MessageBox.Show("Error: " + ex.Message.ToString(), "Error - Student Management Sytem", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
finally
{
licdb.Dispose();
}
}
private void SoftwareIDCheck(string id)
{
LicenseEntity licdb = new LicenseEntity();
try
{
var uid = licdb.Licenses.Where(c => c.SoftwareID == id).FirstOrDefault();
if (uid != null)
{
licdb.Entry(uid).State = System.Data.Entity.EntityState.Deleted;
licdb.SaveChanges();
}
}
catch (Exception ex)
{
MessageBox.Show("An error occured: " + ex.Message.ToString(), "Error - Student Management System", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
licdb.Dispose();
}
}
