private void Confirm(object sender, RoutedEventArgs e)
{
//add this---> if(OldPin==OldPin set on Main Page)
//try{
if ((NewPin.Text.Length < 4) || (NewPin.Text.Contains("."))) //checks if pincode consists of 4 digits
{
MessageBox.Show("Please enter 4 characters.(Digits only!)");
return;
}
else
{
if (NewPin.Text.Trim() != CNewPin.Text.Trim()) //checks if newpin=confirm newpin
{
MessageBox.Show("New Pin and Confirm Pin do not match!");
return;
}
else
{
DataProtection readdata = new DataProtection();
byte[] ProtectedPinByte = readdata.ReadPinFromFile();
// Decrypt the PIN by using the Unprotect method.
// if I enter null or some byte, Unprotect method generates exception.
// return message is "The parameter is incorrect"
byte[] PinByte = ProtectedData.Unprotect(ProtectedPinByte, null);
// Convert the PIN from byte to string
string EncPincode = Encoding.UTF8.GetString(PinByte, 0, PinByte.Length);
if (OldPin.Text != EncPincode)
{
MessageBox.Show("Old pincode does not match!");
return;
}
else if (OldPin.Text == NewPin.Text)
{
MessageBox.Show("Old pincode eqauls New pincode!");
return;
}
else
{
DataProtection writedata = new DataProtection();
byte[] NewPinByte = Encoding.UTF8.GetBytes(NewPin.Text);
byte[] ProtectedNewPinByte = ProtectedData.Protect(NewPinByte, null);
writedata.WritePinToFile(ProtectedNewPinByte);
//this.WritePinToFile(ProtectedNewPinByte);
MessageBox.Show("You successfully changed your pincode!");
OldPin.Text = "";
NewPin.Text = "";
CNewPin.Text = "";
}
}
}
}
private void Button_Click(object sender, RoutedEventArgs e)
{
// using(IsolatedStorageFile isoStorage = IsolatedStorageFile.GetUserStoreForApplication())
try
{
DataProtection readdata = new DataProtection();
byte[] ReadProtectedPinByte = readdata.ReadPinFromFile();
string ProtectedPincode = Encoding.UTF8.GetString(ReadProtectedPinByte, 0, ReadProtectedPinByte.Length);
// byte[] ReadPinByte = ProtectedData.Unprotect(ReadProtectedPinByte, null);
//string EncPincode = Encoding.UTF8.GetString(ReadPinByte, 0, ReadPinByte.Length);
if (ProtectedPincode == "")
{
DataProtection writedata = new DataProtection();
byte[] PinByte = Encoding.UTF8.GetBytes(PinBox.Text);
byte[] ProtectedPinByte = ProtectedData.Protect(PinByte, null);
writedata.WritePinToFile(ProtectedPinByte);
MessageBox.Show("Your pincode is set!");
NavigationService.Navigate(new Uri("/Login.xaml", UriKind.Relative));
return;
}
else
{
byte[] ReadPinByte = ProtectedData.Unprotect(ReadProtectedPinByte, null);
string EncPincode = Encoding.UTF8.GetString(ReadPinByte, 0, ReadPinByte.Length);
if (EncPincode.CompareTo(PinBox.Text) == 0)
{
}
else
{
MessageBox.Show("pincode is unmatch");
return;
}
}
if (PinBox.Text.Length != 4 || PinBox.Text.Any(char.IsDigit) != true)
{
MessageBox.Show("Error! Please enter a 4 digit code");
return;
}
NavigationService.Navigate(new Uri("/Login.xaml", UriKind.Relative)); //Work Normally
/*using (IsolatedStorageFileStream stream = isoStorage.OpenFile("pincode.txt", FileMode.OpenOrCreate))
* {
* using (StreamWriter writer = new StreamWriter(stream))
* {
* writer.WriteLine(PswdBox.Password);
* MessageBox.Show("Success! Your pincode is set");
* NavigationService.Navigate(new Uri("/Login.xaml", UriKind.Relative));
* writer.Close();
* }
* }*/
}
catch (IsolatedStorageException)
{
MessageBox.Show("IsolatedStorageException");
NavigationService.Navigate(new Uri("/Login.xaml", UriKind.Relative));
}
catch (ArgumentNullException)
{
MessageBox.Show("ArgumentnullException");
}
}