Why do I get an error about array formation and indexing while using .NET CopyTo method?

I'm using a .NET library, one of the classes I'm using implements the Collection interface, but when I try to call the 'CopyTo' method I get an error message:

>> myCollection = MyLibrary.GetCollection(); % Returns a collection of LibObject objects
>> myArr = NET.createArray('System.Object', 200)
>> myCollection.CopyTo(myArr, 0);
Array formation and indexing are not allowed on .NET objects. Use the Item method to index into this object 

How can I resolve this error message?

Answer 1

[MathWorks Support Team]

Make sure that the array that you are copying to is of the same type as the original collection, and be sure that it is large enough to hold the original collection:

>> myArr = NET.createArray('MyLibrary.LibObject', myCollection.Count())
>> myCollection.CopyTo(myArr, 0)