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When deleting an entity have to call the repository twice?
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pponzano View Drop Down
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Joined: 28-Apr-2011
Location: Italy
Posts: 165 		Post Options Post Options   Quote pponzano Quote  Post ReplyReply Direct Link To This Post Topic: When deleting an entity have to call the repository twice?
    Posted: 03-Oct-2012 at 9:37am
Hello,
suppose I've got an entity VARIABLES and I delete it doing
 
OperationResult DeleteVariables(VARIABLES v)
{
v.EntityAspect.Delete();
 
return AlwaysCompletedOperationResult.Instance
} 
 
then at the Operation.CompletedSuccessfully call :
 
public OperationResult SaveAsync(Action onSuccess = null, Action<Exception> onFail = null)
     {
         EntitySaveOperation op = entityManagerProvider.Manager.SaveChangesAsync();
         return op.OnComplete(onSuccess, onFail).AsOperationResult();
     }
 
Or there's a simpler way in SL?
Thanks
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smi-mark View Drop Down
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Joined: 24-Feb-2009
Location: Dallas, Texas
Posts: 343 		Post Options Post Options   Quote smi-mark Quote  Post ReplyReply Direct Link To This Post Posted: 03-Oct-2012 at 10:28am
You have to delete and save, because until you save, it is only deleted in memory.

However, when you switch to DF2012 and VS 2012, the syntax is much easier

you can simply do something like:

public async void Delete()
{
   myEntity.Delete();
   await SaveAsync();
}

public async Task SaveAsync()
{
            return entityManagerProvider.Manager.SaveChangesAsync();
}


Edited by smi-mark - 03-Oct-2012 at 10:29am
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