I am trying to write a function that will accept any collection class to check its Count property, but I can't figure out how to receive the collection class:

Public Sub CheckCount(theCollection as ????, ExpectedCount as Integer, Message As String) If theCollection.Count <> ExpectedCount Then Throw New System.Exception(Message)

End Sub

I can't figure out how to receive [theCollection].

If possible, I would like to be able to place this in a global project that references SD.LLBLGen.Pro.ORMSupportClasses, but does not reference my generated code project.

Thanks.

Hi trevorg. Something like this should work.

At your independent class (throw an exception if you want):

using SD.LLBLGen.Pro.ORMSupportClasses;

namespace SomeHelper
{
    public static class SomeHelper
    {
        public static bool CheckCount(IEntityCollection2 collection, int expectedCount)
        {
            return (collection.Count == expectedCount);
        }
    }
}

At your BL/GUI code:

EntityCollection<CustomerEntity> customers = new EntityCollection<CustomerEntity>(new CustomerEntityFactory());

bool res = SomeHelper.SomeHelper.CheckCount(customers, 0);

Ok, I tried that....if I have: Dim AF_HEADCollection As New AF_HEADCollection CheckCount(AF_HEADCollection, 1) I get a compile error: "Option Strict On disallows implicit conversions from 'Domain.CollectionClasses.AF_HEADCollection' to 'SD.LLBLGen.Pro.ORMSupportClasses.IEntityCollection2'."

Where: Public Class AF_HEADCollection Inherits EntityCollectionBase(Of AF_HEADEntity) EntityCollectionBase Inherits CollectionCore(Of TEntity)

Public Class AF_HEADEntity Inherits CommonEntityBase

AF_HEADCollection.Count is implemented in ORMSupportClasses.CollectionCore(Of T)

I tried: Public Sub CheckCount2(ByVal collection As EntityCollectionBase(Of CommonEntityBase), ByVal expectedCount As Integer)

End Sub

But get the error: Value of type 'Domain.CollectionClasses.AF_HEADCollection' cannot be converted to 'SD.LLBLGen.Pro.ORMSupportClasses.EntityCollectionBase(Of Domain.EntityClasses.CommonEntityBase)'.

Seems like this should be an easy thing to do.....

Try sending the collection explicitly converted to the method, something like: CheckCount(AF_HEADCollection as IEntityCollection2, 1), I'm not sure about the correct vb instruction so please verify this.

CheckCount(CType(myAF_HEADCollection, IEntityCollection2), 1)

No compile error, but get a runtime error:

Unable to cast object of type 'Talisman.EnvisionMaximo.Domain.CollectionClasses.AF_HEADCollection' to type 'SD.LLBLGen.Pro.ORMSupportClasses.IEntityCollection2'.

Surely I am not the first person to write a function that accepts any SelfServiced LLBLGen collection object, there's just got to be a way to do this. It is more so a .Net generics issue than it is a LLBLGen issue, but surely there must be a way to do this!

Got it....have to use a constraint:

Public Sub CheckCount(Of theEntityType As EntityBase)(ByVal theCollection As CollectionCore(Of theEntityType), ByVal expectedCount As Integer)

End Sub