private void btnInsert_Click(object sender, EventArgs e)
{
if (btnInsert.Text == "Cancel")
{
setControlState("i");
return;
}
if (dataGood())
{
int accountNumber = Convert.ToInt32(txtAccountNum.Text);
if (isValidAccount(accountNumber))
{
string firstName = txtFirstName.Text;
string lastName = txtLastName.Text;
double balance = Convert.ToDouble(txtAccountBalance.Text);
AccountRecordRA ra = new AccountRecordRA(accountNumber, firstName, lastName, balance);
try
{
//position file pointer
file.Seek(ra.FileIndex, SeekOrigin.Begin);
ra.write(file);
readFile();
clearText();
}
catch (IOException io)
{
MessageBox.Show(io.Message, "Error writing to File");
}
}
}
}
private void btnUpdate_Click(object sender, EventArgs e)
{
if (dataGood())
{
int acct = Convert.ToInt32(txtAccountNum.Text);
string fn = txtFirstName.Text;
string ln = txtLastName.Text;
string sbal = txtAccountBalance.Text;
if (sbal[0] == '$')
{
sbal = sbal.Remove(0, 1);
}
else if (sbal[0] == '-' && sbal[1] == '$')
{
sbal = sbal.Remove(1, 1);
}
double bal = Convert.ToDouble(sbal);
AccountRecordRA ra = new AccountRecordRA(acct, fn, ln, bal);
try
{
file.Seek(ra.FileIndex, SeekOrigin.Begin);
ra.write(file);
readFile();
}
catch (IOException io)
{
MessageBox.Show(io.Message, "Error updating record");
}
setControlState("i");
}
}
private void initData()
{
AccountRecordRA ra = new AccountRecordRA();
try
{
//clear the file incase it contains corrupt data
file.SetLength(0);
//position file pointer:
file.Seek(0, SeekOrigin.Begin);
for (int i = 0; i < MAX_RECORDS; i++)
{
ra.write(file);
}
readFile();
MessageBox.Show("Data file has been initialized");
}
catch (IOException io)
{
MessageBox.Show(io.Message, "Error initializing File");
}
}