protected void Btn_SubmitReview_Click(object sender, EventArgs e) { UserRating ur = new UserRating(); ur = new UserRating(); int result = ur.CreateReview(Lbl_Name.Text, Ddl_Tp.SelectedItem.Value, Tb_Feedback.Value, Rating1.CurrentRating.ToString()); if (result == 1) { Lbl_Msg.Text = "Thank you for your feedback"; Validation.CssClass = "alert alert-dismissable alert-success"; Lbl_Msg.ForeColor = Color.Green; } else { Lbl_Msg.Text = "Error in adding record! Inform System Administrator!"; Lbl_Msg.ForeColor = Color.Red; } // insert avg int Total = 0; string connStr = ConfigurationManager.ConnectionStrings["ConnStr"].ConnectionString; SqlConnection myConn = new SqlConnection(connStr); myConn.Open(); SqlCommand cmd = new SqlCommand("SELECT rating FROM UserRating", myConn); SqlDataAdapter da = new SqlDataAdapter(cmd); DataTable dt = new DataTable(); da.Fill(dt); if (dt.Rows.Count > 0) { for (int i = 0; i < dt.Rows.Count; i++) { Total += Convert.ToInt32(dt.Rows[i][0].ToString()); } int Average = Total / (dt.Rows.Count); TourPackage tp = new TourPackage(); tp = new TourPackage(); int avg = tp.AverageRating(Ddl_Tp.SelectedItem.Value, Average.ToString()); } }