private void btntrolai_Click(object sender, EventArgs e)
{
this.Hide();
Frmquanlysv frm = new Frmquanlysv();
frm.Show();
}
private void btnlogin_Click(object sender, EventArgs e)
{
SqlConnection cn = new SqlConnection(@"Data source= .\SQLEXPRESS; Initial Catalog = Quanlysinhvien; Trusted_Connection = yes");
SqlDataAdapter da = new SqlDataAdapter("select count (*) From Login where USENAME = '" + txtname.Text + "' and PASSWORD = '******'", cn);
DataTable dt = new DataTable();
da.Fill(dt);
if (dt.Rows[0][0].ToString() == "1")
{
this.Hide();
Frmquanlysv frm = new Frmquanlysv();
frm.Show();
}
else
{
MessageBox.Show(" Please check you use nam and password", "Errors", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
