SubmitComplaints.aspx.cs

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace HotelManagement
{
    public partial class WebForm12 : System.Web.UI.Page
    {
        string strcon = ConfigurationManager.ConnectionStrings["con"].ConnectionString;

        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
                submitComplaint();
        }

        void submitComplaint()
        {
            try
            {
                SqlConnection con = new SqlConnection(strcon);
                if (con.State == ConnectionState.Closed)
                {
                    con.Open();
                }

                SqlCommand cmd = new SqlCommand("INSERT INTO Complaints(UserId,Details) values(@UserId,@Details)", con);

                cmd.Parameters.AddWithValue("@UserId", Session["Id"]);
                cmd.Parameters.AddWithValue("@Details", TextBox2.Text.Trim());

                cmd.ExecuteNonQuery();
                con.Close();
                Response.Write("<script>alert('Complaint Registered!');</script>");
                //GridView1.DataBind();

            }
            catch (Exception ex)
            {
                Response.Write("<script>alert('" + ex.Message + "');</script>");
            }
        }
    }
}