<?xml version="1.0" encoding="utf-8" ?>
<configuration>

 <appSettings>
  <add key="CRMUrlOrg" value="http://192.168.21.28:5555/yourorganization/XRMServices/2011/Organization.svc" />
  <add key="CRMOrganization" value="yourorganization" />
  <add key="CRMDomain" value="yourdomain" />
  <add key="CRMUsername" value="yourusername" />
  <add key="CRMPassword" value="yourpassword" />
 </appSettings>
 
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
    </startup>
</configuration>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Client;
using Microsoft.Xrm.Sdk.Query;
using System.Configuration;
using System.ServiceModel.Description;

namespace DemoCRM
{
    class Program
    {
        static void Main(string[] args)
        {         
            //create service crm
            Uri urlcrm = new Uri(ConfigurationManager.AppSettings["CRMUrlOrg"]);
            string username = ConfigurationManager.AppSettings["CRMUsername"];
            string password = ConfigurationManager.AppSettings["CRMPassword"];

            ClientCredentials credentials = new ClientCredentials();
            credentials.Windows.ClientCredential.UserName = username;
            credentials.Windows.ClientCredential.Password = password;
            OrganizationServiceProxy serviceproxy = new OrganizationServiceProxy(urlcrm, null, credentials, null);
            IOrganizationService service;
            service = (IOrganizationService)serviceproxy;

            //First tutorial CRUD Crm 2011
            // 1. Create
            // insert into entity contact 

            Entity _contact = new Entity("contact");
            _contact.Attributes["firstname"] = "Jhon";
            _contact.Attributes["lastname"] = "Corner";
            _contact.Attributes["emailaddress1"] = "jhon@mial.com";

            Guid contactID = service.Create(_contact);

            Console.WriteLine("INSERT CONTACT SUCCESS WITH THE GUID : " + contactID);
            Console.ReadKey();

            //finish
            //lets run the program
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Client;
using Microsoft.Xrm.Sdk.Query;
using System.Configuration;
using System.ServiceModel.Description;

namespace DemoCRM
{
    class Program
    {
        static void Main(string[] args)
        {         
            //create service crm
            Uri urlcrm = new Uri(ConfigurationManager.AppSettings["CRMUrlOrg"]);
            string username = ConfigurationManager.AppSettings["CRMUsername"];
            string password = ConfigurationManager.AppSettings["CRMPassword"];

            ClientCredentials credentials = new ClientCredentials();
            credentials.Windows.ClientCredential.UserName = username;
            credentials.Windows.ClientCredential.Password = password;
            OrganizationServiceProxy serviceproxy = new OrganizationServiceProxy(urlcrm, null, credentials, null);
            IOrganizationService service;
            service = (IOrganizationService)serviceproxy;

            // read from entity contact
            QueryByAttribute q_readcontact = new QueryByAttribute("contact");
            q_readcontact.ColumnSet = new ColumnSet(new string[] { "firstname", "lastname", "emailaddress1" });
            q_readcontact.Attributes.Add("firstname");
            q_readcontact.Values.Add("jhon");

            //similar to 
            //select firstname, lastname, emailaddress1 from contact where emailaddress1='jhon@mial.com'

            EntityCollection read_contacts = service.RetrieveMultiple(q_readcontact);
            
            // it return collection of entity
            // so, we use looping entity
            if (read_contacts.Entities.Count > 0) 
            {
                foreach (Entity _contact in read_contacts.Entities) 
                {
                    string fname = _contact.Attributes["firstname"].ToString();
                    string lname = _contact.Attributes["lastname"].ToString();
                    string email = _contact.Attributes["emailaddress1"].ToString();

                    Console.WriteLine("read from entity contact :");
                    Console.WriteLine("first name : " + fname);
                    Console.WriteLine("last name : " + lname);
                    Console.WriteLine("email : " + email);
                    Console.WriteLine("-------------------------------------------");
                    Console.WriteLine("press enter to continue");
                    Console.ReadKey();

                    //lets run the program
                }
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Client;
using Microsoft.Xrm.Sdk.Query;
using System.Configuration;
using System.ServiceModel.Description;

namespace DemoCRM
{
    class Program
    {
        static void Main(string[] args)
        {         
            //create service crm
            Uri urlcrm = new Uri(ConfigurationManager.AppSettings["CRMUrlOrg"]);
            string username = ConfigurationManager.AppSettings["CRMUsername"];
            string password = ConfigurationManager.AppSettings["CRMPassword"];

            ClientCredentials credentials = new ClientCredentials();
            credentials.Windows.ClientCredential.UserName = username;
            credentials.Windows.ClientCredential.Password = password;
            OrganizationServiceProxy serviceproxy = new OrganizationServiceProxy(urlcrm, null, credentials, null);
            IOrganizationService service;
            service = (IOrganizationService)serviceproxy;

            //update entity crm

            //first, define which entity to update
            //update contact with email address='jhon@mial.com';

            QueryByAttribute q_updatecontact = new QueryByAttribute("contact");
            q_updatecontact.ColumnSet = new ColumnSet(new string[] { "firstname", "lastname", "emailaddress1" });
            q_updatecontact.Attributes.Add("emailaddress1");
            q_updatecontact.Values.Add("jhon@mial.com");

            EntityCollection _updatecontacts = service.RetrieveMultiple(q_updatecontact);
            if (_updatecontacts.Entities.Count > 0) 
            {
                foreach (Entity _updatecontact in _updatecontacts.Entities) 
                {
                    _updatecontact.Attributes["firstname"] = "Indiana";
                    _updatecontact.Attributes["lastname"] = "Jhones";

                    service.Update(_updatecontact);

                    Console.WriteLine("Update contact success!");
                    Console.ReadKey();
                    //it similar to UPDATE contact SET firstname='Indiana', lastname='Jhones' WHERE emailaddress1='jhon@mial.com'

                    //lets run the program

                }
            }   
  
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Client;
using Microsoft.Xrm.Sdk.Query;
using System.Configuration;
using System.ServiceModel.Description;

namespace DemoCRM
{
    class Program
    {
        static void Main(string[] args)
        {         
            //create service crm
            Uri urlcrm = new Uri(ConfigurationManager.AppSettings["CRMUrlOrg"]);
            string username = ConfigurationManager.AppSettings["CRMUsername"];
            string password = ConfigurationManager.AppSettings["CRMPassword"];

            ClientCredentials credentials = new ClientCredentials();
            credentials.Windows.ClientCredential.UserName = username;
            credentials.Windows.ClientCredential.Password = password;
            OrganizationServiceProxy serviceproxy = new OrganizationServiceProxy(urlcrm, null, credentials, null);
            IOrganizationService service;
            service = (IOrganizationService)serviceproxy;

     //DELETE from entity crm
            QueryByAttribute q_deletecontact = new QueryByAttribute("contact");
            q_deletecontact.ColumnSet = new ColumnSet(new string[] { "firstname", "lastname", "emailaddress1" });
            q_deletecontact.Attributes.Add("emailaddress1");
            q_deletecontact.Values.Add("jhon@mial.com");

            EntityCollection deletecontacts = service.RetrieveMultiple(q_deletecontact);

            if (deletecontacts.Entities.Count > 0) 
            {
                foreach (Entity _deletecontact in deletecontacts.Entities) 
                {
                    service.Delete(_deletecontact.LogicalName, _deletecontact.Id);

                    Console.WriteLine("delete contact success!");
                    Console.ReadKey();
                    //finish
                    //lets run the program
                }
            }
            

            //thanks for wathing
            //see you in the next tutorial
            //happy coding :)   
  
        }
    }
}