// find the customer
private void findaccount_Click(object sender, EventArgs e)
{
if (dirty)
{
return;
}
// This is the BANK #
string accno = AccountNumber.Text;
Bank = DataArray.ArrayGetBank(Convert.ToInt32(AccountNumber.Text));
if (Bank == null)
{
info.Text = "The Customer # " + AccountNumber.Text + " cannot be found ?. Please try again... ";
MessageBox.Show("The Bank account # " + AccountNumber.Text + " for this Customer cannot be found ?. Please try a different value... ", "Customer deletion system");
AccountNumber.Focus( );
return;
}
Cust = Customer.GetCustomerAccount(Bank.CustAccountNumber.ToString( ));
if (Cust == null)
{
MessageBox.Show("Unable to find the Customer Record from LinkedList", "Database system ERROR"); return;
}
else
{
DeleteButton.Enabled = true;
command.Text = "Account has been identified successfully";
FirstName.Text = Cust.FirstName;
LastName.Text = Cust.LastName;
command.Text = "Click <DELETE> to REMOVE PERMANENTLY";
}
}
private void allbankaccounts_SelectedIndexChanged(object sender, EventArgs e)
{
// get bank account for selected bank
if (!listupdateneeded)
{
return;
}
Int32 currsel = 0;
string temp = allbankaccounts.SelectedItem.ToString();
char[] ch = { '\t' };
string[] x = temp.Split(ch);
currsel = Convert.ToInt32(x[0]);
// call the Find click event directly
BankAccount Bank = DataArray.ArrayGetBank(currsel);
if (Bank == null)
{
MessageBox.Show("ERROR ENCOUNTERED - Bank account found does not match ", "Data Processing Error"); return;
}
// Display the bank data
AccountBalance.Text = Bank.Balance.ToString();
Interest.Text = Bank.InterestRate.ToString();
int indx = Convert.ToInt16(x[1]);
AccountType.SelectedIndex = indx - 1;
}
private void accountnumber_Leave_1(object sender, EventArgs e)
{ // loosing focus of Bank A/C #
if (accountnumber.Text == "")
{
MessageBox.Show("You MUST enter a valid Bank A/c #, Please try again... ", "Bank Account Deposit");
accountnumber.Focus( );
return;
}
Bank = DataArray.ArrayGetBank(Convert.ToInt32(accountnumber.Text));
if (Bank == null)
{
info.Text = "The Customer # " + accountnumber.Text + " cannot be found ?. Please try again... ";
MessageBox.Show("The Bank account # " + accountnumber.Text + " cannot be found ?. Please try a different value... ", "Bank Account Deposit");
accountnumber.Focus( );
return;
}
MakeDeposit.Enabled = true;
//Customer C = new Customer ( );
Cust = DataArray.ArrayGetCust(Convert.ToInt32(Bank.CustAccountNumber.ToString( )));
if (Cust == null)
{
MessageBox.Show("Cannot identify the Customer A/c # for this bank account , Please try again... ", "Bank Account Deposit");
return;
}
else
{
lastname.Text = Cust.LastName;
firstname.Text = Cust.FirstName;
info.Text = "Bank A/C found ! - Enter the amount to be deposited...";
textBox2.Focus( );
}
}
private void AccountNumber_Leave(object sender, EventArgs e)
{
if (AccountNumber.Text == "1234")
{
info.Text = "Please complete the Customer A/c # entry correctly";
AccountNumber.Focus( );
return;
}
if (dirty)
{
return;
}
if (AccountNumber.Text == "")
{
MessageBox.Show("You MUST enter a valid Cusotmer A/c #, Please try again... ", "Customer deletion system");
AccountNumber.Focus( );
return;
}
if (Bank == null)
{
Bank = DataArray.ArrayGetBank(Convert.ToInt32(AccountNumber.Text));
if (Bank == null)
{
info.Text = "The Customer # " + AccountNumber.Text + " cannot be found ?. Please try again... ";
MessageBox.Show("The Bank account # " + AccountNumber.Text + " for this Customer cannot be found ?. Please try a different value... ", "Customer deletion system");
AccountNumber.Focus( );
return;
}
bankno.Text = Bank.BankAccountNumber.ToString( );
}
DeleteButton.Enabled = true;
//Customer C = new Customer ( );
Cust = DataArray.ArrayGetCust(Convert.ToInt32(Bank.CustAccountNumber.ToString( )));
if (Cust == null)
{
MessageBox.Show("Cannot identify the Customer A/c # , Please try again... ", "Customer deletion system");
return;
}
else
{
LastName.Text = Cust.LastName;
FirstName.Text = Cust.FirstName;
info.Text = "Customer A/C found ! - Click the Delete button to remove this account...";
DeleteButton.Focus( );
MessageBox.Show("Customer A/c # Identified, press the Delete button to remove it... ", "Customer deletion system");
}
}
private void saveBank_Click(object sender, EventArgs e)
{
Bank.Balance = Convert.ToDecimal(AccountBalance.Text);
Bank.InterestRate = Convert.ToDecimal(Interest.Text);
SerializeData.WriteBankAccountToDiskAndText(Bank, Bank.FullFileName);
// update array data
BankAccount B = DataArray.ArrayGetBank(Bank.BankAccountNumber);
B.Balance = Bank.Balance;
B.InterestRate = Bank.InterestRate;
// update LinkedList
foreach (BankAccount Bk in BankAccount.BankAccountsLinkedList)
{
if (Bk.BankAccountNumber == Bank.BankAccountNumber)
{
Bk.Balance = Bank.Balance;
Bk.InterestRate = Bank.InterestRate;
break;
}
}
MessageBox.Show("Bank Account [" + Bank.BankAccountNumber.ToString( ) + "] has been updated successfully..", "Data Maintenance");
string msg = "Bank Account [" + Bank.BankAccountNumber.ToString( ) + " has been updated successfully...\r\n";
// Bank.form1. ShowText ( msg, null, -1 );//the method defined in Bank
}
// Go ahead and make bank account deposit
//******************************************************************************************************************************
private void MakeDeposit_Click_1(object sender, EventArgs e)
//******************************************************************************************************************************
{
// Caution, this bank account may be one of several for this customer,
// so make NO assumptions
// Bank is already the correct record
Int32 bankaccountno = 0;
if (accountnumber.Text.Length == 0 || textBox2.Text.Length == 0)
{
info.Text = "Please complete both fields before pressing Go";
MessageBox.Show("Please complete both fields before pressing Go", "Data Input Error");
return;
}
if (notes.Text == "")
{
MessageBox.Show("You have not entered a reason for this deposit ?\nDo you want to continue without doing so ?",
"Data Input Error", MessageBoxButtons.YesNo);
if (DialogResult == DialogResult.No)
{
return;
}
}
// This is the bank account #
bankaccountno = Convert.ToInt32(accountnumber.Text);
string acnostring = accountnumber.Text;
string amountstr = textBox2.Text.Trim( );
if (!amountstr.Contains("."))
{
amountstr += ".00";
}
decimal amount = Convert.ToDecimal(amountstr);
if (amount <= 0)
{
throw new ArgumentOutOfRangeException(nameof(amount), "Amount of Deposit [" + amount + "] must be positive");
}
// Update the Bank ArrayList
Bank = DataArray.ArrayGetBank(bankaccountno);
if (Bank == null)
{
MessageBox.Show("Unable to Find Bank Account in LinkedList??..\nDeposit transaction aborted.", "Fatal Error"); return;
}
string custnostring = Bank.CustAccountNumber.ToString( );
// This call updates BOTH the Bank A/c and the entry in the LinkedList
if (!BankAccount.UpdateBankLinkedList(bankaccountno, amount))
{
MessageBox.Show("Failed to update BankAccount Linked List for Account " + acnostring, "Bank Account Deposit");
}
// Also save the updated bank account back to disk
SerializeData.WriteBankAccountToDiskAndText(Bank, Bank.FullFileName);
// now add a new transaction for this operation
BankTransaction Deposit = new BankTransaction( );
Deposit.TransDate = DateTime.Now;
Deposit.AccountType = Bank.AccountType;
Deposit.CustAccountNumber = Bank.CustAccountNumber;
Deposit.BankAccountNumber = Bank.BankAccountNumber;
Deposit.Transamount = amount;
Deposit.Notes = "New Deposit : " + notes.Text;
Deposit.Status = Bank.Status;
BankTransaction.allBankTransactions.AddLast(Deposit);
// update the Customer Balance Hash Table cos it holds the balance value
CustomerBalanceHashTable.DeleteHashCustBalEntry(custnostring);
CustomerBalanceHashTable.AddHashCustBalEntry(custnostring, Bank.Balance);
MessageBox.Show("Deposit of " + amount.ToString( ) + " has been added to account # " + custnostring + "\nThe new balance is £" + Bank.Balance.ToString( ), "Bank Account Deposit");
textBox2.Text = "";
notes.Text = "";
accountnumber.Focus( );
return;
}