Viv,

Thanks for the tip. In the meantime, I've decided to switch to sending XML and convert that to a DataTable that I can iterate through. That seems to do the trick for now.

Jon

>>My C# COM DLL has a public method with the following signature:
>>

>>public void AddClientsToList(Contact[] contacts, string listName)
>>

>>
>>In VFP, I do the following:

• Call a DLL method to get a new contact object
• Populate the properties
• Create an array and place the object in the first element
• Call COMARRAY(loDLL,10)

>>When I attempt loDLL.AddClientsToList(@MyArray, "test"), I get a type mismatch COM error.
>>
>>Any ideas on what I'm doing wrong?
>
>No. But passing arrays of anything is always a pain. Since you have control of both sides maybe it would be simpler to just pass the Contacts in one-by-one? e.g:

public class MyDll
>    {
>        Dictionary<string, List<Contact>> lists = new Dictionary<string, List<Contact>>();
>        public Contact GetNewContact() { return new Contact();}
>       
>        public void AddClientToList(Contact contact,string listName)
>        {
>             if (!lists.Keys.Contains(listName))
>                lists.Add(listName, new List<Contact>());
>            lists[listName].Add(contact);
>        }
>    }