C#

<pre lang="c#">

<pre>BELayer:
public string quantity { get; set; }
public string prod_id { get; set; }
public string party_id { get; set; }  


DALayer page code:
//command for auto fill data into quantity table;
        public SqlDataReader autofillparty_id(BEL beobj)
        {
            try
            {
                
                cmd = new SqlCommand("select * from product where prod_id='" + beobj.prod_id + "'", con);
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.CommandText = "spsearchpartyid";
                cmd.Parameters.AddWithValue("@prod_id", beobj.prod_id);
                con.Open();
                SqlDataReader sdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
                return sdr;
     
            }
            catch (Exception ex)
            {
                throw ex;
            }

            finally 
            {
               con.Close();
            }
        }


BALayer code
//command for autofill data into table quantity..
        public SqlDataReader autofillquantity(BEL beobj)
        {
            try
            {
                return daobj.autofillparty_id(beobj);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

Main Page code::
private void button1_Click(object sender, EventArgs e)
        {
          if (baobj.autofillquantity(beobj).Read())
            {
                txtboxpartyidquant.Text = (beobj.party_id.ToString());
                
            }

        }
 this code is not working i know problem is in my main page but i don't know how can i solve this problem please help me ...

public class Order : IValidateObject
{
    public int Id { get; set; }
    public int ItemId { get; set; }
    public int Quantity { get; set; }

    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        var item = DbContext.Items.Find(ItemId); // <-- What about this?
        if (Quantity % item.Multiple != 0)
            yield return new ValidationResult("Quantity not multiple of item", new[] {Quantity});
    }
}

public class Item
{
    public int Id { get; set; }
    public int Multiple { get; set; }
}

public class Person
{
    public int PersonId { get; set; } //Primary key
    //Other Properties. 
    public int ParentId { get; set; } //ForignKey of another Person
    public virtual ICollection<Person> People { get; set; }//Clooection of the same class.
}

///////////////////////////////////////////////////////////////////////////////////////////
///
/// PingAppConsile: application testing the ping() connection to a node
///
/// Based on code form Microsoft MSDN about the ping() command
///
/// Version: 1.0: 8-JAN-17: NOS
///
///////////////////////////////////////////////////////////////////////////////////////////
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;
using System.Net;
using System.Net.NetworkInformation;
//
namespace PingAppConsole
{
    class Program
    {
        /// <summary>
        /// //////////////////////////////////////////////////////////////////////////////
        static void Main(string[] args)
        ///
        /// Purpose: the main function in the application handling the ping()communication
        ///
        /// Version: 1.0: 09-FEB-20: Adis Pipic
        /// </summary>
        {
            string host, data;
            byte[] buffer;
            int timeout;
            Ping pingSender = new Ping();
            PingOptions options = new PingOptions();
            // Use the default Ttl value which is 128,
            // but change the fragmentation behavior.
            options.DontFragment = true;
            // Create a buffer of 32 bytes of data to be transmitted.
            data = "Rodham street";
            buffer = Encoding.ASCII.GetBytes(data);
            timeout = 120;
            // Name or address of node to access
            host = "www.google.no";
            PingReply reply = pingSender.Send(host, timeout, buffer, options);
            if (reply.Status == IPStatus.Success)
            {
                Console.WriteLine(" Ping communication status for {0}:", host);
                Console.WriteLine(" ------------------------------------------");
                Console.WriteLine(" Address: {0}", reply.Address.ToString());
                Console.WriteLine(" RoundTrip time (mSec): {0}", reply.RoundtripTime);
                Console.WriteLine(" Time to live: {0}", reply.Options.Ttl);
                Console.WriteLine(" Dont fragment: {0}", reply.Options.DontFragment);
                Console.WriteLine(" Buffer size: {0}", reply.Buffer.Length);
                Console.WriteLine(" ------------------------------------------");
            }
            else
            {
                Console.WriteLine(" Error connecting to network address/name {0}", host);
            }
            Console.WriteLine(" Press CR or Enter to Quit the application");
            Console.ReadLine();
        }
    }
}