private void btnDK_Click(object sender, EventArgs e)
{
fDangky dk = new fDangky();
this.Hide();
dk.ShowDialog();
}
private void fLogin_FormClosing(object sender, FormClosingEventArgs e)
{
DialogResult d = MessageBox.Show("Bạn có muốn thoát không?", "Exit", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (d == DialogResult.No)
{
e.Cancel = true;
}
fDangky dk = new fDangky();
dk.Close();
}