ref Array

[Anonymous]

Hi, I am using a com object which maybe developped by VC6 or VB6. There is a method after wrapped by .Net like this: System.Array func(ref System.Array a); When I tried to pass the variable like this: Array a = new Array(); Array b = new Array(); b = func(ref a); It can not compile through? How can I make it work? Thanks in advance.

[leppie]

Anonymous wrote: When I tried to pass the variable like this: Array a = new Array(); Array b = new Array(); Try:

object[] a = new object[1];
object[] b;

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[yyf]

Here is what I did: object []a = new object[1]; object []b; Array tmp = (Array)a; b = (object [])func(ref tmp); Then it compiled ok. But when I run it, I got this exception: An unhandled exception of type 'System.Runtime.InteropServices.SafeArrayTypeMismatchException' occurred in GeoCoding.exe Additional information: Specified array was not of the expected type. Thanks.

[mav northwind]

What's the IDL declaration of func? Right now you're stuffing an array of generic objects into the function. I guess func doesn't expect an array of objects, but of other, more meaningful types. mav