private void cmdInsert_Click(object sender, EventArgs e)
{
if (dataGood())
{
int acct = Convert.ToInt32(txtAcctNum.Text);
if (isValidAccount(acct))
{
string fn = txtFName.Text;
string ln = txtFName.Text;
double bal = Convert.ToDouble(txtBalance.Text);
AccountRecordRA ra = new AccountRecordRA(acct, fn, ln, bal);
try
{
raFile.Seek((acct - 1) * 44, SeekOrigin.Begin);
ra.write(raFile);
readFile();
clearText();
}
catch (IOException ex)
{
MessageBox.Show(ex.Message, "error inserting record");
}
}
}
}
private void cmdUpdate_Click(object sender, EventArgs e)
{
if (dataGood())
{
int acct = Convert.ToInt32(txtAcctNum.Text);
string fn = txtFName.Text;
string ln = txtLName.Text;
string sBal = txtBalance.Text;
if (sBal[0] == '$')
{
sBal = sBal.Remove(0, 1);
}
double bal = Convert.ToDouble(sBal);
AccountRecordRA ra = new AccountRecordRA(acct, fn, ln, bal);
try
{
raFile.Seek((acct - 1) * 44, SeekOrigin.Begin);
ra.write(raFile);
readFile();
}
catch (IOException ex)
{
MessageBox.Show(ex.Message, "error Updating");
}
setControlState("i");
}
}
private void initializeFile()
{
MessageBox.Show("InitializeFile() called");
AccountRecordRA ra = new AccountRecordRA();
try
{
// position file pointer
raFile.Seek(0, SeekOrigin.Begin);
for (int i = 0; i < 100; i++)
{
ra.write(raFile);
}
}
catch (IOException ex)
{
MessageBox.Show(ex.Message, "Error initilizing File");
}
}
private void cmdDelete_Click(object sender, EventArgs e)
{
if (MessageBox.Show("Are you sure you want to delete this record ?", "Confirm record delete", MessageBoxButtons.YesNo, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button2) == System.Windows.Forms.DialogResult.Yes)
{
// delete record
int acct = Convert.ToInt32(txtAcctNum.Text);
AccountRecordRA ra = new AccountRecordRA();
try
{
//potition file pointer
raFile.Seek((acct - 1) * 44, SeekOrigin.Begin);
ra.write(raFile);
readFile();
}
catch (IOException ex)
{
MessageBox.Show(ex.Message, "error deleting record");
}
}
}
private void readFile()
{
listBox1.Items.Clear();
AccountRecordRA ra = new AccountRecordRA();
try
{
raFile.Seek(0, SeekOrigin.Begin);
for (int i = 0; i < 100; i++)
{
ra.read(raFile);
if (ra.Account > 0)
{
listBox1.Items.Add(ra.Account + ";" + ra.FirstName + ";" + ra.LastName + ";" + ra.Balance.ToString("c"));
}
}
}
catch (IOException ex)
{
MessageBox.Show(ex.Message, "Error reading file");
}
}