public DB() { ConnectionString = "Data Source=homebudget.database.windows.net;Initial Catalog=HomeBudget;User ID=Bartas199;Password=QWERTY_1234"; using (Connection = new SqlConnection()) { try { Connection.ConnectionString = ConnectionString; Connection.Open(); Connection.Close(); } catch { MyError.ConnectingFail(); } } //MessageBox.Show("SELECT Email FROM Users WHERE Email =/ ' /'"); }