private void btnGoback_Click(object sender, EventArgs e)
{
frmAdmin newform = new frmAdmin();
this.Hide();
newform.Show();
}
private void btnLogin_Click(object sender, EventArgs e)
{
OpenSqlConnection();
string query = "Select TENDANGNHAP from NHANVIEN where TENDANGNHAP='" + txtUsername.Text + "'and MATKHAU='" + txtPassword.Text + "'and IDCHUCVU='QL'";
string query1 = "Select TENDANGNHAP from NHANVIEN where TENDANGNHAP='" + txtUsername.Text + "' and MATKHAU='" + txtPassword.Text + "'and IDCHUCVU='NV'";
SqlCommand cmd = new SqlCommand(query, conn);
SqlCommand cmd1 = new SqlCommand(query1, conn);
var verify = cmd.ExecuteScalar();
var verify1 = cmd1.ExecuteScalar();
conn.Close();
if (verify != null)
{
frmAdmin newform = new frmAdmin();
this.Hide();
newform.Show();
}
else if (verify1 != null)
{
frmStaff newfrm = new frmStaff();
this.Hide();
newfrm.Show();
}
else
{
MessageBox.Show("Log in failed!", "Retry", MessageBoxButtons.RetryCancel, MessageBoxIcon.Error);
}
}