public DataTable userList()
{
MY_DB db = new MY_DB();
DataTable tb = new DataTable();
SqlCommand cmd = new SqlCommand("SELECT user_id, fname, lname, birthdate, gender, phone, address, picture, selected_courses FROM listUser", db.getConnection);
SqlDataAdapter adapter = new SqlDataAdapter();
adapter.SelectCommand = cmd;
adapter.Fill(tb);
return(tb);
}
private void loginButton_Click(object sender, EventArgs e)
{
if (userRadio.Checked)
{
MY_DB db = new MY_DB();
SqlDataAdapter adapter = new SqlDataAdapter();
DataTable table = new DataTable();
SqlCommand command = new SqlCommand("SELECT * FROM [account] WHERE username = @User AND password = @Pass", db.getConnection);
command.Parameters.Add("@User", SqlDbType.NVarChar).Value = textBoxUser.Text;
command.Parameters.Add("@Pass", SqlDbType.NVarChar).Value = textBoxPass.Text;
adapter.SelectCommand = command;
adapter.Fill(table);
if (table.Rows.Count > 0)
{
MessageBox.Show("Ok, next time will be go to Main Menu of App");
MainMenu menu = new MainMenu();
menu.Show();
}
else
{
MessageBox.Show("Invalid Username or Password", "Login Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
if (textBoxUser.Text == string.Empty)
{
textBoxUser.Focus();
errorProvider1.SetError(textBoxUser, "Please input username !!!");
}
if (textBoxPass.Text == string.Empty)
{
textBoxPass.Focus();
errorProvider1.SetError(textBoxPass, "Please input password !!!");
}
}
else
{
MY_DB db = new MY_DB();
SqlDataAdapter adapter = new SqlDataAdapter();
DataTable table = new DataTable();
SqlCommand command = new SqlCommand("SELECT * FROM [customer] WHERE username = @user AND password = @pass", db.getConnection);
command.Parameters.Add("@user", SqlDbType.NVarChar).Value = textBoxUser.Text;
command.Parameters.Add("pass", SqlDbType.NVarChar).Value = textBoxPass.Text;
adapter.SelectCommand = command;
adapter.Fill(table);
if (table.Rows.Count > 0)
{
MessageBox.Show("Ok, next time will be go to Main Menu of App");
CustomerMainInterface customer = new CustomerMainInterface();
Global.setCustomerID(Convert.ToInt32(table.Rows[0][0]));
customer.Show();
}
else
{
MessageBox.Show("Invalid Username or Password", "Login Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
if (textBoxUser.Text == string.Empty)
{
textBoxUser.Focus();
errorProvider1.SetError(textBoxUser, "Please input username !!!");
}
if (textBoxPass.Text == string.Empty)
{
textBoxPass.Focus();
errorProvider1.SetError(textBoxPass, "Please input password !!!");
}
}
}
