private void UpdateButton_Click(object sender, EventArgs e)
{
const string errorMessage = "A supplier with this name doesn't exist.\n\nPlease enter a different name.";
_connection = DB_Connect.connect();
_connection.Open();
if (IfSupplierExists(_connection, SNTextBox.Text))
{
var sqlQuery = @"UPDATE[Suppliers] SET[SupplierName] = '" + SNTextBox.Text + "', [SupplierAddress] = '" + SATextBox.Text + "' , [SupplierNumber] = '" + SNUTextBox.Text + "', [SupplierEmail] = '" + SETextBox.Text + "' WHERE[SupplierName] = '" + SNTextBox.Text + "'";
ClearText();
SNTextBox.Focus();
_command = new SqlCommand(sqlQuery, _connection);
_command.ExecuteNonQuery();
}
else
{
MessageBox.Show(errorMessage);
SNTextBox.Clear();
SNTextBox.Focus();
}
_connection.Close();
LoadData();
}
private void AddButton_Click(object sender, EventArgs e)
{
const string errorMessage = "A supplier with this name already exists.\n\nPlease enter a different name.";
_connection = DB_Connect.connect();
_connection.Open();
if (IfSupplierExists(_connection, SNTextBox.Text))
{
MessageBox.Show(errorMessage);
SNTextBox.Clear();
SNTextBox.Focus();
}
else
{
var sqlQuery = @"INSERT INTO[Suppliers] ([SupplierName], [SupplierAddress], [SupplierNumber], [SupplierEmail]) VALUES
('" + SNTextBox.Text + "', '" + SATextBox.Text + "', '" + SNUTextBox.Text + "', '" + SETextBox.Text + "')";
_command = new SqlCommand(sqlQuery, _connection);
_command.ExecuteNonQuery();
ClearText();
SNTextBox.Focus();
}
_connection.Close();
LoadData();
}
private void ClearText()
{
SETextBox.Clear();
SATextBox.Clear();
SNTextBox.Clear();
SNUTextBox.Clear();
}
private void ClearText()
{
PCTextBox.Clear();
PNTextBox.Clear();
SNTextBox.Clear();
SCTextBox.Clear();
PriceTextBox.Clear();
StockTextBox.Clear();
}
private void AddAccount()
{
string name = FNTextBox.Text + " " + SNTextBox.Text;
string x = GenerateUN(FNTextBox.Text.ToLower(), DEPcb.Text.ToUpper());
var success = "You have successfully created an account!\n\nYour username is : " + x + "\nYour password is : default\n\nThis can be changed when you log in for the first time.";
_connection = DB_Connect.connect();
_connection.Open();
var sqlQuery = @"INSERT INTO[Users] ([Name], [Department], [UserName], [Password], [AccessLevel]) VALUES
('" + name + "', '" + DEPcb.Text + "', '" + x + "', '" + "default" + "', '" + ALcb.Text + "')";
_command = new SqlCommand(sqlQuery, _connection);
_command.ExecuteNonQuery();
FNTextBox.Clear();
SNTextBox.Clear();
DEPcb.SelectedIndex = -1;
ALcb.SelectedIndex = -1;
FNTextBox.Focus();
MessageBox.Show(success);
_connection.Close();
}
private void DeleteButton_Click(object sender, EventArgs e)
{
const string errorMessage = "This supplier does not exist!";
_connection = DB_Connect.connect();
if (IfSupplierExists(_connection, SNTextBox.Text))
{
_connection.Open();
var sqlQuery = @"DELETE FROM[Suppliers] WHERE[SupplierName] = '" + SNTextBox.Text + "'";
_command = new SqlCommand(sqlQuery, _connection);
_command.ExecuteNonQuery();
_connection.Close();
}
else
{
MessageBox.Show(errorMessage);
}
ClearText();
SNTextBox.Focus();
LoadData();
}
