Me tinkering with Deserializing JSON in Post BPM

DeserializePOSTBPM.cs

using System;
using System.Data;
using System.Linq;
using System.Data.DataSetExtensions;
					
          
// use dtJson instead of dynJson
public class Program
{
	public static void Main()
	{
		DataTable dtSnapshot = new DataTable();
dtSnapshot.Columns.Add("Company");
dtSnapshot.Columns.Add("PackSlip");
dtSnapshot.Columns.Add("PackLine");
dtSnapshot.Columns.Add("VendorNum");
dtSnapshot.Columns.Add("PurPoint");
dtSnapshot.Columns.Add("Selected", typeof(bool));
dtSnapshot.Columns.Add("Received");
dtSnapshot.Columns.Add("SysRowID");
		
		
  DataRow dr = dtSnapshot.NewRow();
  dr["Company"] = 123;
  dr["PackSlip"] = "abcg";
  dr["Selected"] = false;
  dtSnapshot.Rows.Add(dr);
		
  DataRow dr2 = dtSnapshot.NewRow();
  dr2["Company"] = 123;
  dr2["PackSlip"] = "abce";
  dr2["Selected"] = true;
  dtSnapshot.Rows.Add(dr2);
		
	/*foreach (var item in dtSnapshot.AsEnumerable())
		{
			Console.WriteLine(item.Field<string>("PackSlip"));		
		}*/

var serializedString = Newtonsoft.Json.JsonConvert.SerializeObject(dtSnapshot);
dynamic dynJson = Newtonsoft.Json.JsonConvert.DeserializeObject(serializedString);
DataTable dtJson = Newtonsoft.Json.JsonConvert.DeserializeObject<DataTable>(serializedString);
		
		
		//var z = (from x in dtJson.AsEnumerable() select x);
		var rows = dtJson.AsEnumerable().Where(x => x.Field<bool>("Selected") == true).FirstOrDefault();
		bool z = rows.Field<bool>("Selected");
		Console.WriteLine(z);
		
		//var rows2 = dtJson.AsEnumerable();//.Where(x => x.Field<bool?>("Selected") == true);
		var rows2 = dtJson.AsEnumerable().Where(x => x.Field<bool?>("Selected") == true).ToList();
		bool y = rows2[0].Field<bool>("Selected");
		Console.WriteLine(y);

		foreach (var item in rows2)
		{
			Console.WriteLine(item.Field<string>("PackSlip"));	
		}
		
	}
}

SerializePREBPM.cs

// PRE
DataTable dtSnapshot = new DataTable();
dtSnapshot.Columns.Add("Company");
dtSnapshot.Columns.Add("PackSlip");
dtSnapshot.Columns.Add("PackLine");
dtSnapshot.Columns.Add("VendorNum");
dtSnapshot.Columns.Add("PurPoint");
dtSnapshot.Columns.Add("Selected");
dtSnapshot.Columns.Add("Received");
dtSnapshot.Columns.Add("SysRowID");
callContextBpmData.Character01 = string.Empty;

Ice.Diagnostics.Log.WriteEntry($"vendorNum : {vendorNum} - purPoint: {purPoint} - packSlip: {packSlip}");

var ttRcvDtlRows =
  (from rd in ttRcvDtl
    where rd.Added()
    && rd.Company == Session.CompanyID
    && rd.VendorNum == vendorNum
    && rd.PurPoint == purPoint
    && rd.PackSlip == packSlip
    && rd.Selected == true
    select rd
  ).ToList();

foreach (var row in ttRcvDtlRows)
{
  Ice.Diagnostics.Log.WriteEntry($"PackSlip: {row.PackSlip} - PackLine: {row.PackLine} - VendorNum: {row.VendorNum} - PurPoint: {row.PurPoint} - Selected: {row.Selected} - Received: {row.Received} - LCFlag: {row.LCFlag} - ManualLC: {row.ManualLC} - MtlBurRate %: {row.MtlBurRate} - AllowLCUpdate: {row.AllowLCUpdate} - RowMod: {row.RowMod}", "Debug");

  DataRow dr = dtSnapshot.NewRow();
  dr["Company"] = row.Company;
  dr["PackSlip"] = row.PackSlip;
  dr["PackLine"] = row.PackLine;
  dr["VendorNum"] = row.VendorNum;
  dr["PurPoint"] = row.PurPoint;
  dr["Selected"] = row.Selected;
  dr["Received"] = row.Received;
  dr["SysRowID"] = row.SysRowID.ToString();
  dtSnapshot.Rows.Add(dr);
}

if (dtSnapshot.Rows.Count > 0)
{
  callContextBpmData.Character01 = Newtonsoft.Json.JsonConvert.SerializeObject(dtSnapshot);
  Ice.Diagnostics.Log.WriteEntry($"dtSnapshot.Count: {dtSnapshot.Rows.Count}", "Debug");
}