Hi there,

I'm trying to set a Prefetch Path on a PerformSelectEventArgs2 instance but the property is read only and null at runtime.

How do I make the property to be non-null?

Cheers, Ian.

Hi Ian,

This is a get-only property. You don't need to write it, as normally you do one of two things:

1. Set the property somewhere else (Page_Load, for instance). Then at PerformSelect you simply pass the e.PrefetchPath param.

_myLLBLGenProDataSource.PrefetchPathToUse = ...

adapter.FetchEntityCollection(e.ContainedCollection, null, e.PrefetchPath);

1. At PerformSelect event handler, create a new PrefetchPath object and pass it to the fetch call:

protected void myLLBLGenProDataSource_PerformSelect(object sender, SD.LLBLGen.Pro.ORMSupportClasses.PerformSelectEventArgs2 e)
{
    PrefetchPath myPrefetchPath = new PrefetchPath(...);
    myPrefetchPath.Add(...);
    
    using (DataAccessAdapter adapter = new DataAccessAdapter())
    {
        adapter.FetchEntityCollection(e.ContainedCollection, null, myPrefetchPath);
    }
}

So, there is no need to write this event param.