public static DataTable laybang(string chuoi)
{
clsKetnoi kn = new clsKetnoi();
SqlDataAdapter da = new SqlDataAdapter(new SqlCommand(chuoi, kn.conn));
try
{
DataTable dt = new DataTable();
da.Fill(dt);
return(dt);
}
catch { return(null); }
}
public static bool dieuchinh(string chuoi)
{
clsKetnoi kn = new clsKetnoi();
if ((new SqlCommand(chuoi, kn.conn)).ExecuteNonQuery() > 0)
{
kn.dongketnoi();
return(true);
}
else
{
kn.dongketnoi();
return(false);
}
}