How to Integrate WhatsApp with Dynamics 365 Omnichannel – On Trial

Sample Code to Check Connectivity with Dynamic 365 CE using Tooling Connector 

Ref: 

https://docs.microsoft.com/en-us/powerapps/developer/data-platform/org-service/quick-start-org-service-console-app

https://carldesouza.com/connecting-to-dynamics-365-using-crmserviceclient/

Retrieve Multiple Sample 

 

using Microsoft.Xrm.Sdk;

using Microsoft.Xrm.Sdk.Query;

using Microsoft.Xrm.Tooling.Connector;

using System;

using System.Net;

namespace OrganizationServiceSample

{

    class Program

    {

        static void Main(string[] args)

        {

            string connectionString = "AuthType=OAuth;Username=demo1@*******.onmicrosoft.com;Password=********;Url=https://*******.crm4.dynamics.com;AppId=51f81489-12ee-4a9e-aaae-a2591f45987d; RedirectUri=app://58145b91-0c36-4500-8554-080854f2ac97;LoginPrompt=Auto";

            CrmServiceClient conn = new CrmServiceClient(connectionString);

            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

            IOrganizationService _orgService;

            _orgService = (IOrganizationService)conn.OrganizationWebProxyClient != null ? (IOrganizationService)conn.OrganizationWebProxyClient : (IOrganizationService)conn.OrganizationServiceProxy;

            if (conn != null && conn.IsReady)

            {

                QueryExpression query = new QueryExpression("account");

                query.ColumnSet.AddColumns("name");

                EntityCollection ec = _orgService.RetrieveMultiple(query);

                foreach (Entity a in ec.Entities)

                {

                    Console.WriteLine("Name: " + a.Attributes["name"] + " " + a.Attributes["name"]);

                }

            }

            else

            {

                Console.WriteLine("An error occurred: {0}", conn.LastCrmError);

                Console.WriteLine(conn.LastCrmException.Message);

                Console.WriteLine(conn.LastCrmException.Source);

                Console.WriteLine(conn.LastCrmException.StackTrace);

            }

            Console.WriteLine("Press any key to exit.");

            Console.ReadLine();

        }

    }

}