Somewhere in the code of my Gui I get the typedescriptor of an object. This Type can describe some fo the .Net type (string, int32....) or an LLBLGen Pro EntityCollection (I'm using Adapter, with generics collection)

Said that I have the following code:

Dim T as Type

T=BindingSource.GetItemProperties(nothing).item(44).PropertyType   '44 is EntityCollection2(Of MyAddressEntity)

How can i check if T represent an LLBLGen Pro EntityCollection? The type of entity in the collection is not relevant. I only need to know if it is an LLBLGen EntityCollection.

I know that My entity collectionc inherits from EntityCollectionBase2(Of TEntity); both EntityCollectionBase2 and EntityCollectionBase inherit from CollectionCore(Of TEntity); also EntityCollectionNonGeneric inherit from EntityCollectionBase2(Of EntityBase2).

I'tried following code, without success; they all return False:

T is gettype(sd.LLBLGen.Pro.ORMSupportClasses.CollectionCore(Of))
T is gettype(sd.LLBLGen.Pro.ORMSupportClasses.EntityCollectionBase2(Of))

T.GetGenericTypeDefinition is gettype(sd.LLBLGen.Pro.ORMSupportClasses.CollectionCore(Of))
T.GetGenericTypeDefinition is gettype(sd.LLBLGen.Pro.ORMSupportClasses.EntityCollectionBase2(Of))

T.IsSubclassOf(gettype(sd.LLBLGen.Pro.ORMSupportClasses.CollectionCore(Of)))
T.IsSubclassOf(gettype(sd.LLBLGen.Pro.ORMSupportClasses.EntityCollectionBase2(Of)))

T.GetGenericTypeDefinition .IsSubclassOf(gettype(sd.LLBLGen.Pro.ORMSupportClasses.CollectionCore(Of)))
T.GetGenericTypeDefinition .IsSubclassOf(gettype(sd.LLBLGen.Pro.ORMSupportClasses.EntityCollectionBase2(Of)))

How can I do? There must exist a simpe method to check the type (or the basetype) of a generic collection. I don't wanna resor to some like T.BaseType.FullName Like "SD.LLBLGen.Pro.ORMSupportClasses.EntityCollectionBase*"

Thanks, Max

Hi,

checking for IEntityCollection implementation should make it

Thanks, the following code do the job

Dim InterfaceName as String

InterfaceName = GetType(SD.LLBLGen.Pro.ORMSupportClasses.IEntityCollection2).FullName

If  PropCollection(44).PropertyType.GetInterface(InterfaceName) IsNot Nothing Then
     ....
     ....
     ....
Endif

Max

Or something like this: if typeof(suspectedentity) is SD.LLBLGen.Pro.ORMSupportClasses.IEntityCollection2 then ... end if

mihies wrote:

Or something like this: if typeof(suspectedentity) is SD.LLBLGen.Pro.ORMSupportClasses.IEntityCollection2 then ... end if

I believe that I can't do that, because I don't have any instance of the object (the collection). I have a propertieDescriptor that give me an instance of System.Type that represent the entityCollection. From my understanding, TypeOf ... Is .... work with object instance, not with object type described by an instance of System.Type.

Thanks, Max

Right TypeOf .. Is works only with instances. Missed the fact that you don't have an instance..