How to write a generic update method

[eraashishgupta]

Hi all,
I want to write a generic update method to update any of my entity.
I want to pass the updated entity to that function say user so i will pass the updated user object and now i want that updated object to be persisted in the database.
So how to do this and remember the update method should be generic. In my situation i have million of similar updates so i dont want to write that code by hand , my create method looks like this , similar generic method iwant for update as well

public void Create(T item)
        {
            using (var scope = ObjectScopeProvider1.GetNewObjectScope())
            {
                scope.Transaction.Begin();
                scope.Add(item);
                scope.Transaction.Commit();
            }
        }

[Serge]

Hello eraashishgupta,

 There is no automatic way to persist your changes to the database using this approach. It seems to me that you are using the persistent objects as DTOs (data transfer objects). What you will have to do in the update method is retrieve the object you wish to change from the database and set it's properties with the new values you have in the disconnected object.

As you have to perform different updates this code will be different for each entity. Here however you have a couple of options. You can create some kind of a reflector solution or consider using AutoMapper.

Either way there is no easy implementation as this is a crucial point in every application. I suggest taking some time and effort to implement this thoroughly.

I do hope this helps.

Have a great day,
Serge
the Telerik team

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