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Using Automapper when Updating an object and all of its children

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answered on 02 Aug 2011, 04:52 PM

ConsoleApplication2.zip

SourceDBScript.zip

Hi Ryan Lege,

Please find attached demo project and SQL script.
The SQL script contains the schema of a *source* Database including some demo data. The solution also uses a *destination* database which is exactly the same as the source one, with the exception of having any data in it. The solution takes all the records from the source and inserts it into the destination. Objects are transferred using AutoMapper.
Please bear in mind that you will have to update the reference of AutoMapper.dll.

If the above example does not help you solve the problem, please send us a sample project (your automapper configuration will be necessary), so we can look into it.

Regards,
Nikola
the Telerik team

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answered on 03 Apr 2012, 07:20 PM

THIS DOES NOT WORK ON UPDATES. Can someone help.

Looked at the solution at it only seems to work for inserts NOT updates. I changed the code to do updates as follows but .GetUpdates() returns 0:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using AutoMapper;

using SourceLibrary;

namespace Destination

{

class Program

{

private static void InitializeMapper()

{

Mapper.CreateMap<SourceLibrary.ORDER, ORDER>();

}

static void Main(string[] args)

{

InitializeMapper();

using (DestinationDBContext destinationDBContext = new DestinationDBContext())

{

////clear the destination tables

//foreach( ORDER destinationOrder in destinationDBContext.ORDERs )

//{

// destinationDBContext.Delete( destinationOrder );

//}

//destinationDBContext.SaveChanges();

Console.WriteLine( "Destination orders count == " + destinationDBContext.ORDERs.Count() );

using (SourceDBContext dbContext = new SourceDBContext())

{

IList<SourceLibrary.ORDER> orders = dbContext.ORDERs.ToList();

foreach (SourceLibrary.ORDER sourceOrder in orders)

{

ORDER orderDestination = destinationDBContext.ORDERs.FirstOrDefault(r => r.ORDER_ID == sourceOrder

.ORDER_ID);

orderDestination = Mapper.Map<SourceLibrary.ORDER, ORDER>(sourceOrder);

destinationDBContext.SaveChanges();

//Add(orderDestination);

}

Console.WriteLine( "Updated orders = " + destinationDBContext.GetChanges().GetUpdates<ORDER>().Count );

destinationDBContext.SaveChanges();

// Console.WriteLine( "Destination orders count after insert == " + destinationDBContext.ORDERs.Count() );

}

Console.ReadLine();

}