public static SqlConnection con = new SqlConnection("Data Source=ABDELMALEK-PC\SQLEXPRESS; initial catalog=Gestion_rendez_vous; integrated security=true");
SqlConnection _sqlConnection = new SqlConnection("Data Source=.\SQLEXPRESS;Initial Catalog=Customer;Integrated Security=True ");
SqlConnection conn = new SqlConnection("Data Source=.\SQLEXPRESS;AttachDbFilename=\\ty website\\dps school\App_Data\\dpsdata.mdf;Integrated Security=True;User Instance=True");
SqlConnection conn = new SqlConnection("Data Source=AHAD\SQLEXPRESS;Initial Catalog=TravelTourism;Integrated Security=True; Pooling=False");
SqlConnection _sqlConnection = new SqlConnection("Data Source=.\SQLEXPRESS;Initial Catalog=Customer;Integrated Security=True ");
